21 reviews of Tiffany & Company I was pleasantly surprised with the customer service at this location. I had it in my head that they would be beyond pretentious, from what I have heard in the past; but what I found were helpful salespeople,â¦
Thermionic generators convert heat or light into an electric current by using the temperature difference between two metallic plates that are separated by a vacuum. The hot plate is heated either by incident light or thermal conduction and this causes electrons to evaporate from its surface.
Today's power plants are bigger and controlled by computers, but the basic process is still the same as it was nearly 120 years ago. Here's how power plants make electricity: Coal is dug up and sent on trains and boats. The coal is burned to heat water to make steam. Inside the generator, the steam spins a big fan called a turbine. The spinning turbine rotates a big magnet around a piece of wire & that motion creates a magnetic field that electrifies the wire.