Re: h/2pi

On Jun 1, 2:40 pm, Ray Vickson <RGVick...@xxxxxxx> wrote:
On May 31, 8:37 pm, Nicole <nicolebergm...@xxxxxxxxx> wrote:

Hi,

What is the relevance of 2pi and why is h divided
by 2pi in quantum h-bar?

Nicole

E = h*f, where f = frequency. But, sometimes (often, in fact) it is
easier and more direct to express vibrations in terms of angular
velocity w instead of frequency. Since w = 2*pi*f we have E = h_bar*w,
where h_bar = h/(2*pi). There are other reasons, too.

R.G. Vickson

Thanks for this.

In the original Bohr orbital postulate. Why is
angular momentum L = M v r = n (h/2pi) where n
is each orbital

It doesn't follow from the formula you shared.
I just want to know how n(h/2pi) is related
to L= M v r. I understood the quantum concepts but
just certain derivations I don't know how derived
like the above.
Thanks!

Nicole
.