2 ms·

I think it's mostly an artifact of mathematicians using a single letter for variables. (Which one could also argue against.) Certain variables pick up a conven

I think it's mostly an artifact of mathematicians using a single letter for variables. (Which one could also argue against.) Certain variables pick up a conventional meaning, and one quickly runs out of letters.

pbhjpbhj 6y ago
It's pretty common in physics to use subscripts to label variables, like m-sub-e for mass of an electron, say.