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.
The short answer is yes. It does hurt to get a tattoo. When you're sitting for a tattoo, a specially designed tattoo needle pierces through your skin at approximately 10-15 needle drops per second, fast enough to avoid puncturing the skin and causing bleeding and slow enough to avoid tearing the skin.