What Is a Potentiometer, and How to Choose the Correct Potentiometer?

[jlb]

It's a piece of hardware, that has a rotary motion that varies a resistance on the wiper of the device.

[Markus23]

So where it usually used and for what reason?

[salem c]

https://en.wikipedia.org/wiki/Potentiometer#Applications

[Repeater]

I suspect the OP and Markus23 to be profile spam.

[jonnin]

I dunno, that wiper of the device comment is clearly not a translation program failure or anything, they are probably the real deal :P