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Human: ChemE graduate taking a manufacturing engineering position traditionally filled by MechE's... What can I do to prepare myself? I'll be starting a job in a month as a manufacturing engineer at a polymer film plant. As part of an overhaul in the polymer process, management recently decided to start filling the position with chemical engineers instead of the traditional mechanical engineers. I'll have most of the same job responsibilities as the mechanical guys. In an attempt to "catch up" on some of the things I missed out on in my ChemE education, I plan to watch an MIT opencourseware class on lean manufacturing / six-sigma to prepare for that aspect of the industry. I also hope to find an online "Intro to Statistics" class that I could watch since I wasn't able to take a statistics course while in school. I also plan to brush up on my excel/VBA skills. These things I'm pretty sure will benefit me based on the job description. Are there any other things I should try to learn/ study / brush up on to prepare for the role? Any suggestions would be appreciated. Thanks in advance! Assistant: I'm all for learning stuff to broaden your horizons, but you should really talk to your future direct supervisor and tell him/her what you are thinking about studying, and whether it will be of any use. Otherwise you will likely be covering some ground that will not really be of much use.	Human: ChemE graduate taking a manufacturing engineering position traditionally filled by MechE's... What can I do to prepare myself? I'll be starting a job in a month as a manufacturing engineer at a polymer film plant. As part of an overhaul in the polymer process, management recently decided to start filling the position with chemical engineers instead of the traditional mechanical engineers. I'll have most of the same job responsibilities as the mechanical guys. In an attempt to "catch up" on some of the things I missed out on in my ChemE education, I plan to watch an MIT opencourseware class on lean manufacturing / six-sigma to prepare for that aspect of the industry. I also hope to find an online "Intro to Statistics" class that I could watch since I wasn't able to take a statistics course while in school. I also plan to brush up on my excel/VBA skills. These things I'm pretty sure will benefit me based on the job description. Are there any other things I should try to learn/ study / brush up on to prepare for the role? Any suggestions would be appreciated. Thanks in advance! Assistant: The two most important undergraduate courses you missed are statics and strength of materials. They are both sophomore level classes, do you shouldn't have a hard time teaching yourself. You may be able to move right along without those classes, but I think that would be a bad idea. Remember, an engineer can do for a dollar what any damn fool can do for two. Just because you're OK without those courses doesn't mean you're really doing a good job.
Human: I understand the mathematical explanation but what is the physical explanation behind an isenthalpic temperature rise across a pressure differential (i.e. high pressure hydraulic oil passing through an orifice)? We're having some issues with hydraulics at my company and while I'm not directly involved, it got me reading into some material online. From my research, it seems like situations where hydraulic oil travels across a pressure differential (orifice, relief valve, leak, etc.) without doing any work, there is a temperature rise. My understanding is this is an isenthalpic process and since the volume of the oil is not changing but its pressure is, this change is "made up for" by an increase in temperature. The Joule-Thompson effect in regards to expanding gases makes sense to me. That physical explanation makes sense. Its when the working fluid is a liquid is what I find confusing. Compress a gas, molecules get closer, start smashing into each other more, and you get a temperature increase. Reverse it for an expanding gas. But what about an in-compressible liquid? What is the physical mechanism behind this temperature change? Assistant: I think this correct but you never know with thermo: Your fluid has energy stored in the form of pressure. When you go through an orifice the pressure is lost. Since energy is conserved, where is that energy going to go? In a gas it can go into expansion and velocity. In a fluid it generally results in a temperature rise since it won't expand.	Human: I understand the mathematical explanation but what is the physical explanation behind an isenthalpic temperature rise across a pressure differential (i.e. high pressure hydraulic oil passing through an orifice)? We're having some issues with hydraulics at my company and while I'm not directly involved, it got me reading into some material online. From my research, it seems like situations where hydraulic oil travels across a pressure differential (orifice, relief valve, leak, etc.) without doing any work, there is a temperature rise. My understanding is this is an isenthalpic process and since the volume of the oil is not changing but its pressure is, this change is "made up for" by an increase in temperature. The Joule-Thompson effect in regards to expanding gases makes sense to me. That physical explanation makes sense. Its when the working fluid is a liquid is what I find confusing. Compress a gas, molecules get closer, start smashing into each other more, and you get a temperature increase. Reverse it for an expanding gas. But what about an in-compressible liquid? What is the physical mechanism behind this temperature change? Assistant: the contact between molecules will increase when it's happening. The better way to understand is comparing to polymer extrusion (you can call hydraulic oil as low weigth polymers). When you start the machine you will need to heat to process the material, after some time you can turn off the resistance and let shear do the job.
Human: Do you charge people you know, when they ask you to do anything engineering related? Basically the title. I’ve gotten really tired of taking my time designing boring CAD models every time a family member or old acquaintance wants something 3D printed. Or when they have some failure of a business idea. Literally had an old acquaintance today, send me a picture of a part and he just expected it to magically get 3D printed by sending a picture to the printer. I told him that my hourly rate for design work is $150. It scared him off, so I’m thinking of doing this from now on. Anyone else do this? Assistant: If you want an answer, my hourly rate for consulting is $150/hr. Two hour minimum.	Human: Do you charge people you know, when they ask you to do anything engineering related? Basically the title. I’ve gotten really tired of taking my time designing boring CAD models every time a family member or old acquaintance wants something 3D printed. Or when they have some failure of a business idea. Literally had an old acquaintance today, send me a picture of a part and he just expected it to magically get 3D printed by sending a picture to the printer. I told him that my hourly rate for design work is $150. It scared him off, so I’m thinking of doing this from now on. Anyone else do this? Assistant: If it's relatively simple, I like the person, and am not particularly busy, then I probably wouldn't charge beyond the cost of materials if that. If I'm legitimately interested in it and they're paying for materials, then I'd be more inclined to do something for free. At which point it becomes them effectively paying for a hobby project that they keep. I don't have people asking me to make random stuff though, so the point is kinda moot for me.
Human: How do you think the classified self-guided bullet EXACTO technology work ? www.youtube.com/watch?v=vX8Z2MDYX3g It's basically a .50 cal bullet that can adjust its trajectory 30 times per second to land on a laser-painted target I was wondering issues like a bullet which is spinning (I guess missiles are not ? or is this bullet not spinning, but how do you prevent it from spinning ?) would make it difficult to work with. Maybe some small, gyroscope-thing inside the bullet which adjust its internal balance as it spins ? I doubt the use of fins would be very practical for a bullet. I'm just wondering about the mechanical aspect of it, since it's so small, I can understand how sensors can be attracted to an lazed target. I am not asking for any classified information or specifically encouraging darpa engineers to talk about classified stuff,I'm just asking the opinion of other engineers :) Assistant: Here you go.	Human: How do you think the classified self-guided bullet EXACTO technology work ? www.youtube.com/watch?v=vX8Z2MDYX3g It's basically a .50 cal bullet that can adjust its trajectory 30 times per second to land on a laser-painted target I was wondering issues like a bullet which is spinning (I guess missiles are not ? or is this bullet not spinning, but how do you prevent it from spinning ?) would make it difficult to work with. Maybe some small, gyroscope-thing inside the bullet which adjust its internal balance as it spins ? I doubt the use of fins would be very practical for a bullet. I'm just wondering about the mechanical aspect of it, since it's so small, I can understand how sensors can be attracted to an lazed target. I am not asking for any classified information or specifically encouraging darpa engineers to talk about classified stuff,I'm just asking the opinion of other engineers :) Assistant: If you have fins, you don't need to spin to stabilize the projectile. We've had guided artillery shells fired from rifled guns for a long time. They use, IIRC, a band that can spin around the projectile when it's fired to minimize the spinning when it exits the bore, and the fins engage to cancel out the rest. Getting it down to .50 is essentially an exercise in miniaturization.
Human: Working at Intel soon...stuff to familiarize myself with the way chips are made? Just looking for some videos, books, etc that are helpful to get up to speed quickly @ Intel. Also, if any of you work there, what do you think? Things to do? Cool benefits to take advantage of? Thanks! Assistant: Also in what regard are you working for them? Working on the production floor requires a different skill set than those designing chips, and what specific part are you working on?	Human: Working at Intel soon...stuff to familiarize myself with the way chips are made? Just looking for some videos, books, etc that are helpful to get up to speed quickly @ Intel. Also, if any of you work there, what do you think? Things to do? Cool benefits to take advantage of? Thanks! Assistant: Real basic high level info here: http://newsroom.intel.com/docs/DOC-2476 A couple videos: http://www.youtube.com/watch?v=Q5paWn7bFg4 http://www.youtube.com/watch?v=PecKlm6VutU What's your position? Depending if you're in the fab, tech development, design, validation, reliability, etc. it will impact what you need to know. Intel is a huge company. I bet you'll have a truck load of training once you start.
Human: What is the word for when a 3D surface can be made from 2D materials using just cutting and bending? A naval architect one told me the word that represents this concept, but I can never remember it. My brain wants to say "realizable", but google doesn't turn on up anything on that. I think it came up when we were talking about cold-molded plywood boats. Assistant: Developable is the word you're looking for. https://en.wikipedia.org/wiki/Developable\_surface	Human: What is the word for when a 3D surface can be made from 2D materials using just cutting and bending? A naval architect one told me the word that represents this concept, but I can never remember it. My brain wants to say "realizable", but google doesn't turn on up anything on that. I think it came up when we were talking about cold-molded plywood boats. Assistant: Origami?
Human: Is it possible to make a vacuum pump out of a window air conditioner unit? I want to make a vacuum ping pong ball cannon, but can't get a vacuum pump. Could an AC compressor be repurposed to do it? Assistant: Buy a cheap vacuum pump from aliexpress. <$20	Human: Is it possible to make a vacuum pump out of a window air conditioner unit? I want to make a vacuum ping pong ball cannon, but can't get a vacuum pump. Could an AC compressor be repurposed to do it? Assistant: Why can't you get a vacuum pump?
Human: How did you get your start? How did you guys figure out what specific job you wanted to do. What has brought you to this current point in life? Assistant: I picked engineering because it paid well and has a high employment rate. I picked EE because I did well in the circuit section of my physics class. I picked controls engineering because I enjoyed the work.	Human: How did you get your start? How did you guys figure out what specific job you wanted to do. What has brought you to this current point in life? Assistant: Chemistry, Coffee.
Human: What fuel do military rockets mainly use? solid or liquid? Assistant: “Ignition!” Is a great book that talks in depth about the development of lots of these rocket fuels. Surprisingly easy to read given the chemistry discussed. Highly recommended.	Human: What fuel do military rockets mainly use? solid or liquid? Assistant: Depend on the application. Tomahawk? Liquid fuel, ICBM ? Solid Edit.... appearantly tomahawk also use solid
Human: I have a meeting with the CEO next month. What should I ask him? I’m a recent hire part of a rotational program focused on operations. I got an invite last week to a 30 minute call with the CEO. I want to make a good impression of course so I thought I’d ask you smart creative bunch. Any good questions or talking points I could use to stand out? Thanks for any support or advice! Assistant: Instead of trying to impress the CEO with your questions I’d just be myself and ask questions that I’m curious about. If the CEO deems any of your questions as ‘stupid’ then it’s not a company I’d want to work for.	Human: I have a meeting with the CEO next month. What should I ask him? I’m a recent hire part of a rotational program focused on operations. I got an invite last week to a 30 minute call with the CEO. I want to make a good impression of course so I thought I’d ask you smart creative bunch. Any good questions or talking points I could use to stand out? Thanks for any support or advice! Assistant: Ask him if 2020/COVID has changed his mindset on how your company will conduct business in the future, for both operational and non-operational roles.
Human: What is more dangerous and how? Voltage or current? I often hear people say "current above 1A is deadly" or "high voltage is dangerous". Or are they both equally important (power)? If so, what are the ranges where it is safe? And can you tell me why each of these are dangerous (what will high current or voltage do exactly/separately). Fe high voltage pushes the current quicker to other stuff like a person. Assistant: I=V/R. The human body resistance is relatively constant. Therefore, the current and voltage will be proportional to each other. The higher the voltage, the higher the current. The only caveat is the source of the voltage. If the energy stored is really low, then, during discharge, the voltage and current will rapidly drop off.	Human: What is more dangerous and how? Voltage or current? I often hear people say "current above 1A is deadly" or "high voltage is dangerous". Or are they both equally important (power)? If so, what are the ranges where it is safe? And can you tell me why each of these are dangerous (what will high current or voltage do exactly/separately). Fe high voltage pushes the current quicker to other stuff like a person. Assistant: I used to work with high frequency, high voltage corona. Very low current at 80,000 volts. I could put my finger in the visible streamers with no issue.
Human: I'm a young petroleum engineering student and I want to know which language (other than English) would you recommend for me to learn? I am a petroleum engineering student in Croatia and I want to learn another language that can help me get better job after graduation other than English. I'm considering Norwegian and Russian language. Can you give me some good advices or tips? Assistant: arabic and chineese if you wanna understand your teachers	Human: I'm a young petroleum engineering student and I want to know which language (other than English) would you recommend for me to learn? I am a petroleum engineering student in Croatia and I want to learn another language that can help me get better job after graduation other than English. I'm considering Norwegian and Russian language. Can you give me some good advices or tips? Assistant: Arabic/Russian/Chinese would be helpful if you wanted to work there or worked on Projects with companies from those places. Portuguese/Spanish would be helpful in South America but I wouldn't put those as top priority.
Human: What non-engineering books should engineers and engineering students read? I've just started getting active within this sub, but have seen questions about what to do with spare time, how to better network, how to do better on interviews, etc. A few common themes have emerged, such as developing your social skills, or taking an interest in America's great equalizer... professional sports. I responded to a question by /u/sweat-e-sac with the suggestion of reading different books to round out your knowledge base. I've compiled a list of books I've read and organized them by subject matter. I find that even when I don't wish to participate in a conversation with someone else, having knowledge of the discussion topic gives me an incredible leg up. What are your suggestions for non-technical/non-engineering books that should be read? Oh and before I forget, definitely try to learn a second language if you don't have fluency in one yet, it is a great talking point in your interviews. World Affairs Overview * World Order by Henry Kissinger US Foreign Policy * Rise to Globalism: American Foreign Policy Since 1938 by Stephen E. Ambrose Middle East * From Beirut to Jerusalem by Thomas L. Friedman * Ghost Wars: The Secret History of the CIA, Afghanistan, and bin Laden from the Soviet Invasion to September 10, 2001 by Steve Coll * The Wall and the Gate: Israel, Palestine, and the Legal Battle for Human Rights by Michael Sfard China * On China by Henry Kissinger * China Goes Global: The Partial Power by David Shambaugh Economics * Capital in the Twenty-First Century Paperback by Thomas Piketty * Economic Policy Beyond the Headlines by George P. Shultz, Kenneth W. Dam United States Domestic Issues Civil Rights * Why We Can't Wait by Dr. Martin Luther King Jr. * The New Jim Crow: Mass Incarceration in the Age of Colorblindness by Michelle Alexander Poverty * Evicted: Poverty and Profit in the American City by Matthew Desmond * Hillbilly Elegy: A Memoir of a Family and Culture in Crisis by J. D. Vance General Politics and Policy * Free Speech Beyond Words: The Surprising Reach of the First Amendment by Mark V. Tushnet,‎ Alan K. Chen,‎ Joseph Blocher * Decision Points by George W. Bush * The Federalist Papers Sports * Eleven Rings: The Soul of Success by Phil Jackson Science/Medicine * The Gene: An Intimate History by Siddhartha Mukherjee * The Emperor of All Maladies: A Biography of Cancer by Siddhartha Mukherjee * Permanent Present Tense: The Unforgettable Life of the Amnesic Patient, H. M. by Suzanne Corkin * Bellevue: Three Centuries of Medicine and Mayhem at America's Most Storied Hospital by David Oshinsky Religion/Spirituality * Love Does by Bob Goff * Tuesdays with Morrie by Mitch Album * Mere Christianity by C.S. Lewis Business * Let My People Go Surfing: The Education of a Reluctant Businessman by Yvon Chouinard * Shoe Dog: A Memoir by the Creator of Nike Hardcover by Phil Knight Assistant: Do Androids Dream of Electric Sheep, Philip K Dick Red Mars, Kim Stanley Robinson. Besides Martian colonization potentially happening in our lifetime, it deals with many ethical side effects of engineering and settling. The Gods Themselves, Isaac Asimov Borges, On Exactitude in Science (preferably find a collection like Ficciones and read a few. Most are pretty short). Library of Babyk is good too	Human: What non-engineering books should engineers and engineering students read? I've just started getting active within this sub, but have seen questions about what to do with spare time, how to better network, how to do better on interviews, etc. A few common themes have emerged, such as developing your social skills, or taking an interest in America's great equalizer... professional sports. I responded to a question by /u/sweat-e-sac with the suggestion of reading different books to round out your knowledge base. I've compiled a list of books I've read and organized them by subject matter. I find that even when I don't wish to participate in a conversation with someone else, having knowledge of the discussion topic gives me an incredible leg up. What are your suggestions for non-technical/non-engineering books that should be read? Oh and before I forget, definitely try to learn a second language if you don't have fluency in one yet, it is a great talking point in your interviews. World Affairs Overview * World Order by Henry Kissinger US Foreign Policy * Rise to Globalism: American Foreign Policy Since 1938 by Stephen E. Ambrose Middle East * From Beirut to Jerusalem by Thomas L. Friedman * Ghost Wars: The Secret History of the CIA, Afghanistan, and bin Laden from the Soviet Invasion to September 10, 2001 by Steve Coll * The Wall and the Gate: Israel, Palestine, and the Legal Battle for Human Rights by Michael Sfard China * On China by Henry Kissinger * China Goes Global: The Partial Power by David Shambaugh Economics * Capital in the Twenty-First Century Paperback by Thomas Piketty * Economic Policy Beyond the Headlines by George P. Shultz, Kenneth W. Dam United States Domestic Issues Civil Rights * Why We Can't Wait by Dr. Martin Luther King Jr. * The New Jim Crow: Mass Incarceration in the Age of Colorblindness by Michelle Alexander Poverty * Evicted: Poverty and Profit in the American City by Matthew Desmond * Hillbilly Elegy: A Memoir of a Family and Culture in Crisis by J. D. Vance General Politics and Policy * Free Speech Beyond Words: The Surprising Reach of the First Amendment by Mark V. Tushnet,‎ Alan K. Chen,‎ Joseph Blocher * Decision Points by George W. Bush * The Federalist Papers Sports * Eleven Rings: The Soul of Success by Phil Jackson Science/Medicine * The Gene: An Intimate History by Siddhartha Mukherjee * The Emperor of All Maladies: A Biography of Cancer by Siddhartha Mukherjee * Permanent Present Tense: The Unforgettable Life of the Amnesic Patient, H. M. by Suzanne Corkin * Bellevue: Three Centuries of Medicine and Mayhem at America's Most Storied Hospital by David Oshinsky Religion/Spirituality * Love Does by Bob Goff * Tuesdays with Morrie by Mitch Album * Mere Christianity by C.S. Lewis Business * Let My People Go Surfing: The Education of a Reluctant Businessman by Yvon Chouinard * Shoe Dog: A Memoir by the Creator of Nike Hardcover by Phil Knight Assistant: I guess everyone should have a copy of Machinerys Handbook on their desk
Human: Do any other recent graduates want to do something that isn't engineering? I graduated in the spring and just got an offer from a big aerospace engine mfg company. I'm going to accept to see how I like it since it's going to be a very new experience, but part of me is worried I won't like it. Towards the end of college I really began to find myself. I started playing drums, learning about politics a LOT, learning more about myself and psychology, and I love all of it. All I ever think about are these things and I never think about engineering because its boring. Hopefully my new job will prove me wrong, but a big part of me thinks about how I want a career that helps people or is constantly active and interesting. I think about how motivating it would be to be a therapist, or to do some kind of physical work that helps people like a trade where you can always be active, or honestly I would love to sit at home and cook, clean, read, play video games, etc. Thinking about sitting behind a desk all day seems extremely demotivating, but it's not like I can go just become a therapist or politician, I would need to get an entirely new degree! Does anyone else have these thoughts constantly in their head like me? Assistant: >honestly I would love to sit at home and cook, clean, read, play video games Yeah so would everybody. Get a job that pays enough money for you to do all this on evenings/weekends without having to worry about paying your bills.	Human: Do any other recent graduates want to do something that isn't engineering? I graduated in the spring and just got an offer from a big aerospace engine mfg company. I'm going to accept to see how I like it since it's going to be a very new experience, but part of me is worried I won't like it. Towards the end of college I really began to find myself. I started playing drums, learning about politics a LOT, learning more about myself and psychology, and I love all of it. All I ever think about are these things and I never think about engineering because its boring. Hopefully my new job will prove me wrong, but a big part of me thinks about how I want a career that helps people or is constantly active and interesting. I think about how motivating it would be to be a therapist, or to do some kind of physical work that helps people like a trade where you can always be active, or honestly I would love to sit at home and cook, clean, read, play video games, etc. Thinking about sitting behind a desk all day seems extremely demotivating, but it's not like I can go just become a therapist or politician, I would need to get an entirely new degree! Does anyone else have these thoughts constantly in their head like me? Assistant: Double majored in EE and Theater. Realized about halfway through that engineering was the fallback, not the other way around. Now I’m trying to track down everyone in the entertainment industry who needs a controls engineer…
Human: What’s the coolest Christmas gift you have received? Doesn’t have to be engineering related necessarily, but all the engineers I know love cool, nerdy, mechanical objects. Figured we’d switch up the regular career advice and see everyone’s cool toys! Assistant: Something called a “Power Meter” for my bike (I’m a cyclist). It measured exactly how many watts you are producing, which allows you to do very accurate training and get a very accurate calorie count post workout :)	Human: What’s the coolest Christmas gift you have received? Doesn’t have to be engineering related necessarily, but all the engineers I know love cool, nerdy, mechanical objects. Figured we’d switch up the regular career advice and see everyone’s cool toys! Assistant: Recently: a fitbit. As a kid: Super Nintendo and big Lego castles.
Human: Trying to learn to use Matlab So as i progress into my career i can't really ignore this any more. My university makes us use Matlab a lot but there's not a specific course to really "learn" to use it, I've learnt a few things as I go but I still feel like I should be more knowledgeable in this, I wanted to know if you guys knew about some tool (a book or a youtube series or whatever) to learn the ins and outs of MatLab in my free time. Thanks Assistant: I'd almost recommend learning Python over matlab. The Syntax is similar and you'll have more job marketability when you graduate.	Human: Trying to learn to use Matlab So as i progress into my career i can't really ignore this any more. My university makes us use Matlab a lot but there's not a specific course to really "learn" to use it, I've learnt a few things as I go but I still feel like I should be more knowledgeable in this, I wanted to know if you guys knew about some tool (a book or a youtube series or whatever) to learn the ins and outs of MatLab in my free time. Thanks Assistant: Ughhhhh I hate matlab so much. Is it really so useful? edit: yay for downloading real questions.
Human: I cannot come close to my microphone without creating a strong buzz. When I Hold my microphone's cable this stops. Why and how to solve it? I have a generic headset I like to use just for its microphone connected to my desktop pc. Now people have been complaining about a buzzing sound in the background but only today ive come close to finding out why. When the headset is sitting on my desk these is no buzz, when I reach out to it with my hand it starts (before i touch it, 10-15 cm away) and increases all to way until i put it on my head. Now these headphones have 2 jacks to plug into the pc, one for mic and one for sound. The sound one is not connected and hanging in the air (since i use my speakers on very low for sound). When I hold this second plug/jack in my hand all the buzzing dissapears instantly. When i plug it in to my pc there is buzzing. Tried connecting it to my phone and even my 100W guitar amp, still buzzing. Seems my body is the magic solution here. I wrapped a thin copper wire around this connection pin for the headphones, and when i connect this wire to my metal watch on my arm the buzzing is gone again (obviously) but when i connect this wire to the ''grounding" metal part in my wall electric plug, the buzzing continues. Is my house (and plugs) not grounded at all? If not what might be causing this? I've gone outside, walked on the ground bare feet and came back 10 seconds later to try and it happens so im going to guess its not my body static. Assistant: http://www.amazon.com/PAC-SNI-1-3-5-3-5-mm-Isolator/dp/B001EAQTRI This may help.	Human: I cannot come close to my microphone without creating a strong buzz. When I Hold my microphone's cable this stops. Why and how to solve it? I have a generic headset I like to use just for its microphone connected to my desktop pc. Now people have been complaining about a buzzing sound in the background but only today ive come close to finding out why. When the headset is sitting on my desk these is no buzz, when I reach out to it with my hand it starts (before i touch it, 10-15 cm away) and increases all to way until i put it on my head. Now these headphones have 2 jacks to plug into the pc, one for mic and one for sound. The sound one is not connected and hanging in the air (since i use my speakers on very low for sound). When I hold this second plug/jack in my hand all the buzzing dissapears instantly. When i plug it in to my pc there is buzzing. Tried connecting it to my phone and even my 100W guitar amp, still buzzing. Seems my body is the magic solution here. I wrapped a thin copper wire around this connection pin for the headphones, and when i connect this wire to my metal watch on my arm the buzzing is gone again (obviously) but when i connect this wire to the ''grounding" metal part in my wall electric plug, the buzzing continues. Is my house (and plugs) not grounded at all? If not what might be causing this? I've gone outside, walked on the ground bare feet and came back 10 seconds later to try and it happens so im going to guess its not my body static. Assistant: Honestly I would wrap an insulated wire around your cable and tape it to your desk or something, experiment with what you touch it off to
Human: What would be a useful gift for a mining engineer starting his first job? My little brother just got his first job as a mining engineer and I want to get him a useful gift as he will be living remotely on site. What is something useful I can give him? Assistant: By order of importance: - Socks and foot powder. Lots of both. - Gentleman's toiletry roll. (small, waterproof, with hanging hook and mirror.) (load it up for him) - A good multitool. (Buy the Swiss one) - Something for entertainment.	Human: What would be a useful gift for a mining engineer starting his first job? My little brother just got his first job as a mining engineer and I want to get him a useful gift as he will be living remotely on site. What is something useful I can give him? Assistant: A good headlamp
Human: Where do I start with the most simple kind of engineering? I have looked around, but I cannot for the life of me find a resource for this. I am sorry if I come off as not knowing anything (because I really don't know.) I own a 3d printer and do woodworking and I am only interested in designing the most simple devices that require no electricity, motors or anything like that, just things that require the use of force from an individual. For example sliding stuff, ways(complicated or not) to make the parts move, gears all that jazz. My question is: What are some resources( books, courses) that teach this bare kind of stuff, principles? Yes, I don't know what I am talking about. This engineering stuff is so vast and overwhelming and I really don't know where to start or even the names of the stuff to even do google searches. (I'm not an english speaking citizen so I am not familiar the naming.) Assistant: Shigleys Mechanical Engineering Design is my favorite textbook	Human: Where do I start with the most simple kind of engineering? I have looked around, but I cannot for the life of me find a resource for this. I am sorry if I come off as not knowing anything (because I really don't know.) I own a 3d printer and do woodworking and I am only interested in designing the most simple devices that require no electricity, motors or anything like that, just things that require the use of force from an individual. For example sliding stuff, ways(complicated or not) to make the parts move, gears all that jazz. My question is: What are some resources( books, courses) that teach this bare kind of stuff, principles? Yes, I don't know what I am talking about. This engineering stuff is so vast and overwhelming and I really don't know where to start or even the names of the stuff to even do google searches. (I'm not an english speaking citizen so I am not familiar the naming.) Assistant: Libgen(dot)is bro. Search for any subject you may find interesting.
Human: Is high speed rail practical? Here in the us there is no high speed rail. I’m a pretty science literate person and it seems to me like a pretty killer way to move goods and people around. Seems like it would be efficient and get semis off the road and planes out of the air. I wanted to “AskEngineers” whether there’s something Im missing? To me it just seems like it’s a big, expensive hurdle to build the infrastructure but once it’s there it seems like it knocks the crap out of driving cars, traditional rail, and planes. What am I missing? Assistant: The addiction to cars is indirect in our lifestyles. We can’t even get people in the engineering industry to break up with the notion that people need to be in the office every day.	Human: Is high speed rail practical? Here in the us there is no high speed rail. I’m a pretty science literate person and it seems to me like a pretty killer way to move goods and people around. Seems like it would be efficient and get semis off the road and planes out of the air. I wanted to “AskEngineers” whether there’s something Im missing? To me it just seems like it’s a big, expensive hurdle to build the infrastructure but once it’s there it seems like it knocks the crap out of driving cars, traditional rail, and planes. What am I missing? Assistant: The main reason why trucks beat trains is because roads are subsidized. Taxes on fuel pay only a small percentage of road building and maintenance costs, the rest comes from the government treasury, i.e. taxes in general. The problem is political, if anybody proposed to raise taxes on fuel to subsidize railroads he would never get elected. People like having subsidized roads.
Human: Masters in CS with a Bach in Mechanical Engineering. Hi everyone, so I have a bachelor in mechanical engineering but since the final year of my degree that I've wanted to pursue a career as a software developer. Since I have basic knowledge in Visual Basic, C and Java, I talked to the main professor of the masters degree program in COMP SCI, at my university, and he told me that I could enroll in, as long as I took the 4 main classes from the undergrad curriculum. Those classes are " Software engineering", "Data Bases", "Systems Architecture" and "Intro to programming". So my question is, Do u think I should enroll in the masters program, or do something else ? Extra: In my country the masters program is 2 years long and the tuitions aren´t as crazy as in the US. Sorry if my English is not perfect, it's not my main language. Assistant: I suggest a Mozart in CS instead	Human: Masters in CS with a Bach in Mechanical Engineering. Hi everyone, so I have a bachelor in mechanical engineering but since the final year of my degree that I've wanted to pursue a career as a software developer. Since I have basic knowledge in Visual Basic, C and Java, I talked to the main professor of the masters degree program in COMP SCI, at my university, and he told me that I could enroll in, as long as I took the 4 main classes from the undergrad curriculum. Those classes are " Software engineering", "Data Bases", "Systems Architecture" and "Intro to programming". So my question is, Do u think I should enroll in the masters program, or do something else ? Extra: In my country the masters program is 2 years long and the tuitions aren´t as crazy as in the US. Sorry if my English is not perfect, it's not my main language. Assistant: I'm not sure I agree with needing to take the main courses. If you obtain an MS in CS, then you can be a software developer for a company that does mechanical work. Infact, I feel it would look better having gone to graduate school rather that take more undergraduate school. The difficulty of courses are different by a lot.
Human: Just got fired (today)! What now? Honestly my old job kinda broke my brain a little bit, and I have no idea what I like or am good at anymore. I did engineering change requests and that was torture, especially with undiagnosed/unmedicated ADHD. I did machine retrofits & construction design for an industrial plant and I loved that shit. But from what I remember - since they're continuous process, the WLB isn't ...amazing. Manufacturing engineering intimidates me for that reason. Consulting is absolutely not for me, not even a little bit. Will say, solid PTO & WLB is kinda critical for me - between ongoing chronic illnesses & MH issues I need to be able to work somewhere that doesn't need me to be on 24/7. Which is why I'm looking at government jobs, but I don't think that answers what kind of engineering works with who I am. So I guess that's kinda what I'm looking for. There are a ton of jobs around me for manufacturing engineering, test engineering, R&D and some reliability engineering, which I'm looking at but I'm not sure how to gauge how well I can succeed in those areas and jobs. I know I ignored a bunch of red flags at my last job, which is why I am where I am now tbh, but beyond "don't ignore those", idk what else to look for. Ftr, I have 2.5ish years of internship experience in manufacturing and reliability, and 1.5ish years in energy efficiency/commissioning. Commissioning was fun! The controls engineering was pretty cool tbh. Everything about the structure at my old company fucking sucked tho lmao. So I'm really trying to not go back to any kinda consulting for a good long while, if ever. Also, what kind of engineering is available at the govt level? How does that compare to industry? Assistant: As an engineer with ADHD, go get treated for it. Medication does wonders, people like us have different kind of brains and having medication to go forward with your future career stops many issues on such as anxiety about work since we tend to procrastinate.	Human: Just got fired (today)! What now? Honestly my old job kinda broke my brain a little bit, and I have no idea what I like or am good at anymore. I did engineering change requests and that was torture, especially with undiagnosed/unmedicated ADHD. I did machine retrofits & construction design for an industrial plant and I loved that shit. But from what I remember - since they're continuous process, the WLB isn't ...amazing. Manufacturing engineering intimidates me for that reason. Consulting is absolutely not for me, not even a little bit. Will say, solid PTO & WLB is kinda critical for me - between ongoing chronic illnesses & MH issues I need to be able to work somewhere that doesn't need me to be on 24/7. Which is why I'm looking at government jobs, but I don't think that answers what kind of engineering works with who I am. So I guess that's kinda what I'm looking for. There are a ton of jobs around me for manufacturing engineering, test engineering, R&D and some reliability engineering, which I'm looking at but I'm not sure how to gauge how well I can succeed in those areas and jobs. I know I ignored a bunch of red flags at my last job, which is why I am where I am now tbh, but beyond "don't ignore those", idk what else to look for. Ftr, I have 2.5ish years of internship experience in manufacturing and reliability, and 1.5ish years in energy efficiency/commissioning. Commissioning was fun! The controls engineering was pretty cool tbh. Everything about the structure at my old company fucking sucked tho lmao. So I'm really trying to not go back to any kinda consulting for a good long while, if ever. Also, what kind of engineering is available at the govt level? How does that compare to industry? Assistant: Fired or laid-off? Quite different process, similar outcome.
Human: Is Lean six sigma worth it? I am a mechanical engineering undergraduate student starting my final year and I am considering doing the green belt lean six sigma certification at my university. It is fairly expensive and I would have to take a week off from work, but I am also thinking of doing an mba or masters in engineering leadership a few years after I graduate. Would this certification help me get a job after graduation or be valuable to me in any way? Assistant: if the company you work for really wants it, they'll pay for it, and give you the time to do it. DON"T spend your own money AND vacation on it. GB is worth having, but it's a sprinkle or two on top of the sunday that is your resume.	Human: Is Lean six sigma worth it? I am a mechanical engineering undergraduate student starting my final year and I am considering doing the green belt lean six sigma certification at my university. It is fairly expensive and I would have to take a week off from work, but I am also thinking of doing an mba or masters in engineering leadership a few years after I graduate. Would this certification help me get a job after graduation or be valuable to me in any way? Assistant: Lean is pretty worthless unless you're trying to optimize just-in-time stuff. Six sigma is just "applied" statistics. Really knowing the statistics is incredibly valuable. Six sigma generally speaking teaches how to do the statistics using software and check P-values but not what it actually means or whether the result is meaningful.
Human: Is there a website where I could find technical drawings of parts with all the rules applied? I’m an aerospace engineering student and I’ve been looking for some technical drawings to get familiarized with but I can’t find any “base” on the Internet to cull from. The drawings would have to be congruent with all the official rules and include things like tolerance, coarseness etc. Assistant: ASME Y14.5 is at its 2018 revision, which is tough to find shared copy of. You’d have better chance to find its 2009, or 1994 copies. Not a lot have changed throughout concept-wise, but as a novice, that’d be the least of your concern. I wish every BSME program at every school would have this important “language”. At least 2 semesters of it, 101, 102.	Human: Is there a website where I could find technical drawings of parts with all the rules applied? I’m an aerospace engineering student and I’ve been looking for some technical drawings to get familiarized with but I can’t find any “base” on the Internet to cull from. The drawings would have to be congruent with all the official rules and include things like tolerance, coarseness etc. Assistant: In the UK most companies abide by standards BS8888 which is pretty standard, if you look it up you can find a lot of technical and assembly drawings conforming to those standards.
Human: What is the day of a mechanical engineer like? And electrical? What kind of work do you do? What did you start out doing? Do you like doing it? Would you like to switch to a different type of engineering? Do you travel a lot? Do you like your pay? All feedback appreciated, thanks! Assistant: I spend half my day fighting off the throngs of hot babes. The other half I do stuff on a computer.	Human: What is the day of a mechanical engineer like? And electrical? What kind of work do you do? What did you start out doing? Do you like doing it? Would you like to switch to a different type of engineering? Do you travel a lot? Do you like your pay? All feedback appreciated, thanks! Assistant: Mechanical and Electrical are such wide fields that you'll likely get a different answer form everyone.
Human: How much detail should I give in an exit interview? I'm currently scheduled for an exit interview next week with my employer. I have many reasons for leaving, and I am wondering just how much detail should I give? I feel like some of these details will throw my immediate managers under the bus with their upper management - which may strain my relationship should I need them for future references. Does it make sense to do a tell-all? Or should I just keep in vague? Assistant: None. Don't do the interview at all, there is no requirement to, and you have the right to decline it. It can only harm you.	Human: How much detail should I give in an exit interview? I'm currently scheduled for an exit interview next week with my employer. I have many reasons for leaving, and I am wondering just how much detail should I give? I feel like some of these details will throw my immediate managers under the bus with their upper management - which may strain my relationship should I need them for future references. Does it make sense to do a tell-all? Or should I just keep in vague? Assistant: You did the job, you got paid. Enough said.
Human: How To Maintain 12V / 30A during a 200ms Outage? I have a battery disconnect switch with 4 positions: Source 1, Source 2, Both, Off. Continuity tester's beep is interrupted when switching from "1" to "Both." I'd like my things to stay running when switching. Max load will be 30A. Is there some sort of beefy capacitor that will do the job? Assistant: Alternatively, there are switches that are “make before break” and “make after break”. You have a make after break (new connection made after old connection is broken). You want a “make before break” (new connection made before old connection is broken). Most of these are used for switching batteries (12v) in automotive and marine applications. You can absolutely find them in 12v 30a. Perko makes them, for example, as do many others if you search “make before break battery switch”.	Human: How To Maintain 12V / 30A during a 200ms Outage? I have a battery disconnect switch with 4 positions: Source 1, Source 2, Both, Off. Continuity tester's beep is interrupted when switching from "1" to "Both." I'd like my things to stay running when switching. Max load will be 30A. Is there some sort of beefy capacitor that will do the job? Assistant: Car battery?
Human: What field of engineering did you pick and why? Assistant: Chemical Engineer I used to steal glassware to make bongs in high school chemistry. Took AP because it had better and continued access to glassware. I thought "well wet bench chemistry is boring as fuck and Engineering school is the hardest to get into so why not?" I tell my kids I was good at math and science.	Human: What field of engineering did you pick and why? Assistant: Network Engineering. Was studying Info Sci in Boston as I didn't want to do Computer Science. Cisco Systems comes to campus to hold info sessions for their internships. I was the only one that showed up, sounded interesting, got an interview, got the job. While working there I was like, hey this is cool! So I do that now.
Human: Engineers , How satisfied are with your careers? and would you do anything diff if you could o back to college years?-diff major ?college? etc Assistant: So what I'm getting from this post is that engineering is over-glorified and to live my last days of college to the fullest? Good thing I've decided to do just that for my senior year and I've been incredibly happy.	Human: Engineers , How satisfied are with your careers? and would you do anything diff if you could o back to college years?-diff major ?college? etc Assistant: A++ would career again. In high school, I probably would have taken Mandarin Chinese instead of Spanish. That's specific to my career needs and not necessarily engineering as a whole.
Human: What % of recent mech grads have gotten jobs I am trying to guage roughly what % of recent mech grads who grduated during covid have got jobs. If you have a rough idea between yourself and your friends who graduated and can give an estimate that would be great. Assistant: Even in regular years only about 30% get engineering jobs (in Ontario at elast)	Human: What % of recent mech grads have gotten jobs I am trying to guage roughly what % of recent mech grads who grduated during covid have got jobs. If you have a rough idea between yourself and your friends who graduated and can give an estimate that would be great. Assistant: May 2020 mech e here. Job offer rescinded. No interviews. I don't like ME so I am not going to grad school. I can't join the military and have lots of debt and no connections. Working as a night shift security guard. I'm desperate.
Human: Is Delta-Wye configuration irrelevant when it comes to single-phase transformers? Let's say that our load is a 200 Amp panel feeding from a 50 Amp breaker (480VAC). I would assume, two wires (two hots/phases) from the 50 A breaker would connect to the primary side of a 35 KVA transformer, while the the secondary side will connect 3 wires (two hots and a neutral) to the 200 Amp panel right? Assistant: Yes. Irrelevant. It's not part of the equation because you're only using a single phase setup, so no way to create a Delta or Wye configuration with the coils.	Human: Is Delta-Wye configuration irrelevant when it comes to single-phase transformers? Let's say that our load is a 200 Amp panel feeding from a 50 Amp breaker (480VAC). I would assume, two wires (two hots/phases) from the 50 A breaker would connect to the primary side of a 35 KVA transformer, while the the secondary side will connect 3 wires (two hots and a neutral) to the 200 Amp panel right? Assistant: Not sure what everyone else is commenting, but it sounds like a pretty standard single-phase, split-phase setup. The 480V primary is wired phase-phase, the secondary has a split phase, I'm assuming 240/120V. The secondary has (2) 120V line-neutral legs for single-pole breakers in your panelboard, and 240V line-line for double-pole breakers in the panelboard. But your initial question is correct, you don't have delta or wye with single-phase. Delta and wye describe three-phase connections.
Human: What is the "next big step" in robotics? I am a mechanical engineer and I think I will end up transitioning to something like mechatronics. I hear of companies like Boston Dynamics and Amazon Robotics. However, I am a little confused as to what are the biggest advancements in recent years. What makes a robot today different from one 40 years ago? I work in manufacturing and the tasks these robots do are pretty simple given that they only have to do one or two tasks over and over again. Of course, they are pretty dumb. Can someone from the field elaborate? Assistant: More advanced autonomy. Better sensor perception. Understanding what to do with information. Collaborative robotics. And as a side topic, software safety.	Human: What is the "next big step" in robotics? I am a mechanical engineer and I think I will end up transitioning to something like mechatronics. I hear of companies like Boston Dynamics and Amazon Robotics. However, I am a little confused as to what are the biggest advancements in recent years. What makes a robot today different from one 40 years ago? I work in manufacturing and the tasks these robots do are pretty simple given that they only have to do one or two tasks over and over again. Of course, they are pretty dumb. Can someone from the field elaborate? Assistant: Do you work with robots that Build stuff like cars or just an enthusiast
Human: I’m looking for a light but rigid sheet of plastic. I need something about 30”x48” that won’t bend when lifted from one end. I am building an avalanche simulation board. Basically, I have a scissor lift that is going to lift this sheet up from one side at various angles between 0 and 45 degrees. The load on the sheet will be less than 10lbs spread evenly. Steel is too heavy and flimsy when it is thin. Plastic is the same way. Is there some sort of honeycomb plastic sheet, or some other rigid material that won’t bend? Any other ideas? Assistant: Look for fiber reinforced laminated plates. Depending on the direction of force, it should either be unidirectional (strong in one direction) or quasi-isotropic (fairly strong in all directions) also see here. Examples for pre- laminated sheets: https://www.alibaba.com/showroom/carbon-fiber-laminated-sheet.html In terms of price (from lowest to highest) glassfiber -> carbon -> aramid	Human: I’m looking for a light but rigid sheet of plastic. I need something about 30”x48” that won’t bend when lifted from one end. I am building an avalanche simulation board. Basically, I have a scissor lift that is going to lift this sheet up from one side at various angles between 0 and 45 degrees. The load on the sheet will be less than 10lbs spread evenly. Steel is too heavy and flimsy when it is thin. Plastic is the same way. Is there some sort of honeycomb plastic sheet, or some other rigid material that won’t bend? Any other ideas? Assistant: thicker sheet of plywood with a thin plastic layer on top? should be fairly rigid and cheap. alternatively you can stiffen a thin sheet of plastic by gluing (or otherwise attaching) stiffening members on their side -- think like a plastic beam under the main surface. If you buy the plastic in a 4x8' sheet, you can use strips cut from the excess.
Human: What kind of statistics do engineers use? I am an engineering student, and I am about to finish my semester taking a statistics course. As I prepare for my final exam, I was wondering if there are any particular topics in statistics I should put extra focus on understanding to better prepare myself for an engineering career? What kind of statistics are often used in the engineering field? Assistant: DoE is useful as well.	Human: What kind of statistics do engineers use? I am an engineering student, and I am about to finish my semester taking a statistics course. As I prepare for my final exam, I was wondering if there are any particular topics in statistics I should put extra focus on understanding to better prepare myself for an engineering career? What kind of statistics are often used in the engineering field? Assistant: I have used hypothesis testing a fair bit to determine if design change has a significant effect.
Human: Is anyone else absolutely terrible at mental math? I score very high on standardized tests but I just suck at doing simple calculations in my head. I always make the dumbest mistakes. Assistant: I always say "I'm more worried about someone seeing my calculator history than my browser history"	Human: Is anyone else absolutely terrible at mental math? I score very high on standardized tests but I just suck at doing simple calculations in my head. I always make the dumbest mistakes. Assistant: Same here. Not sure what it is. I feel like my mind goes into overdrive when dealing with complicated problems, otherwise it's in an idle state. Still remember college... Conceptually problem was correct.. arithmetic not so much. 3*3 /= 6
Human: What is the minimum size metal mesh that bluetooth or 2.4GHz can pass through? As the topic says I am trying to find the minimum square hole size for a metal mesh that lets bluetooth signal pass through. I am trying not to make a faraday cage for the signal. The mesh is made from stainless steel wire. Please let me know if it would make a different if the holes are rectangular. And if so what would be the minimum size. Assistant: A very rough rule of thumb is that if the holes are less than 0.1 wavelength (12mm) there will be negligible transmission, and if the holes are bigger than 1 wavelength (122mm) there won’t be much blocking. Waiting for an RF engineer to chime in.	Human: What is the minimum size metal mesh that bluetooth or 2.4GHz can pass through? As the topic says I am trying to find the minimum square hole size for a metal mesh that lets bluetooth signal pass through. I am trying not to make a faraday cage for the signal. The mesh is made from stainless steel wire. Please let me know if it would make a different if the holes are rectangular. And if so what would be the minimum size. Assistant: There’s a formula based on wavelength. I don’t know it off the top of my head.
Human: Automotive question: Why are passenger car tires all roughly 35psi? I've seen lots of answers to adjacent questions that are about overinflation, underinflation and all the stuff a vehicle owner should care about, but this question is not that. I'm wondering why 35psi seems to be the designed pressure for millions of road going vehicles. Several factors at play I know are load bearing both for the rubber and the road, durability and wear, passenger comfort, fuel efficiency and others. Is 35psi the nexus for these factors? I am really asking this as a question for bike tires, which if you're a nerdy cyclist you've seen that all sorts of tire dimensions and treads are a hot topic. 29'er, 650b wheels, 35c slicks, fat bikes etc. One thing that has really come out in recent years is the notion that skinny high pressure tires aren't actually faster - they're just perceptively faster because they transfer more road feel. Fatter tires at an optimal tire pressure seem are actually the faster tire, even in some cases when accounting for added aerodynamic drag, because they seem to push off of bumps on the trailing edge just as much as they asborb impact on the leading edge. That conserves motion and saves the rest of the bike and rider from absorbing energy from road harshness. So thinking back to optimal pressure... We know that for a given load, the tire PSI directly defines the surface contact the tire has. 200lb rider and bike with 100psi tires has a 1 square inch of rubber on the ground for each tire. But lately the trend of non-professional tire choice has been to use a fatter tire on road bikes resulting in 200lb rider and bike to have roughly 40psi in 45c tires leading to larger contact patches. I find that tire pressure to be suspiciously close to what we put in cars... Is this trend working towards some kind of similar nexus that led car tire design to 35psi? If so, should we be thinking of optimal bike tire choice in a similar way where we aim for an ideal tire pressure, say 35 or 40psi and select tires by their width for a given load? I'm sure there are other factors at play, most notably rubber compounds, radial speeds, and acceleration loads. I just didn't find anywhere talking about why 35psi is the designed pressure for a passenger car. Assistant: I keep my fat bike tires at 29, recommendation is 27, but it feels too spongy for me. I’m under 200# :)	Human: Automotive question: Why are passenger car tires all roughly 35psi? I've seen lots of answers to adjacent questions that are about overinflation, underinflation and all the stuff a vehicle owner should care about, but this question is not that. I'm wondering why 35psi seems to be the designed pressure for millions of road going vehicles. Several factors at play I know are load bearing both for the rubber and the road, durability and wear, passenger comfort, fuel efficiency and others. Is 35psi the nexus for these factors? I am really asking this as a question for bike tires, which if you're a nerdy cyclist you've seen that all sorts of tire dimensions and treads are a hot topic. 29'er, 650b wheels, 35c slicks, fat bikes etc. One thing that has really come out in recent years is the notion that skinny high pressure tires aren't actually faster - they're just perceptively faster because they transfer more road feel. Fatter tires at an optimal tire pressure seem are actually the faster tire, even in some cases when accounting for added aerodynamic drag, because they seem to push off of bumps on the trailing edge just as much as they asborb impact on the leading edge. That conserves motion and saves the rest of the bike and rider from absorbing energy from road harshness. So thinking back to optimal pressure... We know that for a given load, the tire PSI directly defines the surface contact the tire has. 200lb rider and bike with 100psi tires has a 1 square inch of rubber on the ground for each tire. But lately the trend of non-professional tire choice has been to use a fatter tire on road bikes resulting in 200lb rider and bike to have roughly 40psi in 45c tires leading to larger contact patches. I find that tire pressure to be suspiciously close to what we put in cars... Is this trend working towards some kind of similar nexus that led car tire design to 35psi? If so, should we be thinking of optimal bike tire choice in a similar way where we aim for an ideal tire pressure, say 35 or 40psi and select tires by their width for a given load? I'm sure there are other factors at play, most notably rubber compounds, radial speeds, and acceleration loads. I just didn't find anywhere talking about why 35psi is the designed pressure for a passenger car. Assistant: Bike tires are not like vehicle tires.
Human: How to calculate flow rate based on pressure and pipe diameter? How can i calculate the flow rate in cubic meters if i only have the diameter of the pipe (2 inches) and the pressure 2 bar? Assistant: What are you actually doing? Is this a real system? Based on some of your sub-comments, you have some type of pump and some type of tank. How are they arranged? This matters. How much piping do you have? Where are you pumping from and to where are you pumping. If you have a diagram, even better. A problem well-defined is a problem half-solved. Write up the information on your system and edit your initial post with it.	Human: How to calculate flow rate based on pressure and pipe diameter? How can i calculate the flow rate in cubic meters if i only have the diameter of the pipe (2 inches) and the pressure 2 bar? Assistant: Calculate friction factor... Use moody diagram to find Reynolds number. Back calculate flow rate based on fluid conditions.
Human: Is it better to have more internships or a long-term one? I got an internship in my major (EE) field and they informed me that they'll keep me on until I graduate and consider a salaried position after that. But, I've been offered several other internships (all at average companies). Would it be better to have several internships on my resume or one "long-term" internship with the prospect of a job after? Assistant: If they are in different areas of technology, it could be a way to get more exposure and decide what you want to do. Or just to find which company culture you like.	Human: Is it better to have more internships or a long-term one? I got an internship in my major (EE) field and they informed me that they'll keep me on until I graduate and consider a salaried position after that. But, I've been offered several other internships (all at average companies). Would it be better to have several internships on my resume or one "long-term" internship with the prospect of a job after? Assistant: Whichever is most relevant for what you want to do.
Human: Can anyone recommend good books on nuclear power? I’ll take anything - nuclear chemistries, research, reactor design, tales from disasters, history of research programs. Anything interesting. Assistant: I have a reading list for nuclear topics going here: https://whatisnuclear.com/nuclear-reading-list.html And I'm biased since I wrote it but here's a huge writeup on nuclear reactor development history in the USA	Human: Can anyone recommend good books on nuclear power? I’ll take anything - nuclear chemistries, research, reactor design, tales from disasters, history of research programs. Anything interesting. Assistant: Midnight in Chernobyl was absolutely fantastic. I’m a structural engineer and appreciated the technical details they went into.