Basic Physics in Industrial Measurement

Sticking two different metals together and heating one end actually creates electricity.

This isn't magic; it's a thermocouple, and it's how industries measure extreme temperatures.

This is just one of the simple tricks used to control massive factories. To measure immense

pressure, we use a tiny wire that changes its electrical resistance when it's stretched.

Want to know how fast liquid is flowing? Just put a plate with a hole in the pipe.

The pressure drop tells you the speed. And to check the level in a giant tank,

you just measure the pressure at the bottom. It's all basic physics—pressure, resistance,

and voltage—powering the most complex industrial processes on Earth.