# Hertz to MeVs

## Main Question or Discussion Point

When considering a vibrating silicon atom.
I'm just not sure how to do the conversion

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rock.freak667
Homework Helper
MeV is mega-electron volts which is equivalent to Joules or energy. So you can't convert frequency to energy.

I know, not directly, but I'm looking for a relation that's something along the lines of $$E=\hbar\omega$$ but I don't know of any.

Essentially, I'm going from a unitless/normalized frequency of 2 to 80 mevs using $$\omega=2\sqrt{K_i/M}$$ where $$K_i$$ is 10.6 $$eV/\AA^2$$ and M is the mass of silicon. I should get approximately 80 mevs.. Not sure how I get there. I got to 1/s easily by using the mass of silicon in mevs/c^2 but that's about it