Hertz is the number of cycles per second in an oscillating wave form. So 60Hz has 60 identical cycles in 1 sec. An Ampere (amp, or A) is the amount of electrons (or charge) that flow past a certain point in one seconds. So amperes are Coulombs/second.
The most and the least painful places to get a tattoo. Shoulder. The shoulder is the least painful tattooing site for two main reasons. First, because in this area there is a greater amount of muscle and second â nerves are not so much sensitive as in other nooks of the body. This area is often the most used and first timers tend to opt for them.
Before Your Appointment. 1  1. Talk to an expert about your tattoo to ease your mind. If you've never had a tattoo, the best way to mentally prepare yourself is to get rid of the mystery surrounding it. 2  2. Learn where tattoos hurt the most. A good amount of the pain from your tattoo is affected by the location on your body where you get it.