In physics, omega stands for angular velocity.

w = dθ /dt where θ is angular displacement and t is time.

In many electricity/magnetism formulae, 2*pi*w is found.

The unit of angular velocity is radians and 2*pi radians is equal to 360 degrees.

Interestingly, alpha is angular acceleration, dw/dt or d²θ /dt².

The Greek alphabets are used to represent various parameters in Physics, like mu is refractive index, rho is specific gravity (and specific resistance too), lambda is wavelenght etc.]]>

I've seen this symbol several times. What does it mean? My mathbook used it once to stand for radians per second, in angular velocity problems. But I tend to see it a lot in places where its meaning appears to be undefined.

What does this symbol stand for? Is it just used for variables or does it always mean the same thing?

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