ELI5: Explain Like I'm 5

Thomson (unit)

Alright kiddo, let me explain what a thomson is.

You know how we use centimeters or inches to measure length? Well, in science we have to measure really tiny things too, like atoms. And that's where the thomson comes in!

A thomson is a unit of measurement for the mass of something really, really small, like subatomic particles (parts of atoms). Scientists use a special machine called a mass spectrometer to measure the mass of these tiny particles. And when they get a measurement, they use the thomson to describe it.

So basically, a thomson is a way to talk about how much teeny tiny things weigh. It's named after a scientist named J.J. Thomson who did a lot of work studying subatomic particles.