# Meaning of Omega Symbol in physics

We use almost all greek alphabets to represent various physical quantities and units in physics. The purpose of this article is to look at the meaning of Omega Symbol in physics.

## Omega Symbol

• Omega is the 24th and last letter of the Greek alphabet.
• It stood for a long “o” sound in Ancient Greek. It still stands for “o” in Modern Greek, but there is no longer a difference between long and short vowels, so it sounds the same as Omicron.

We have both uppercase and lowercase letters in English Alphabets. Similar to this we also have both upper and lower case letters in greek alphabets. We will now look at what uppercase omega $\Omega$ and lowercase $\omega$ means in physics.

### Lowercase Omega $\omega$ symbol

Small or lowercase omega symbol $\omega$ is used to represent angular velocity in physics. In class 11 physics we study angular velocity while studying and analyzing problems related to circular motion or rotational motion. Sometimes lowercase omega symbol is also used to represents angular frequency.

### Uppercase Omega $\omega$

Capital or uppercase omega symbol $\Omega$ is used to represent the symbol for Ohms. Ohms is the unit of electrical resistance a quantity mostly used in electromagnetism in physics and also in engineering.