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.
via Art Ink Collective. That's what makes the tattoo permanentâthe ink is injected into your dermis, where it will stay. Different areas of your body are going to be more painful when you get a tattoo. Areas with less fat tend to be more painful: for example, the top of your foot, your inner forearm, your rib cage.