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.
And I know it's supposed to be one of the most painful piercings you can get, but I really like the look of the dermal hip piercings (I'd want two on each side), plus I've heard that if I got my hips pierced with a surface bar then it would reject no matter what. Has... show more I know dermals are permanent.