The Greek alphabet, which has been in use since about 9 B.C., was the first to have letters for each vowel and consonant. In physics, why are only Greek letters such as delta, sigma, gamma, etc ...

Importance Of Physics Symbols In physics, we symbolise everything with an English/Greek alphabet, such as the speed of velocity, wavelength and other quantities as well.

However, by the end of the fourth century BC, the Ionic-based Euclidean alphabet, made up of 24 letters from alpha to omega, had become standard throughout the Greek-speaking world. It is a ...

But the Greek alphabet also has letters that look familiar but sound different — P makes an R sound. Then there are letters that are unrecognizable, such as psi — shaped like a little pitchfork.