# What is the energy difference between the two quantum states involved in the transition of red light with wavelength 705 nm being absorbed by an atomic gas?

##### 1 Answer

Jun 22, 2015

#### Answer:

I found:

#### Explanation:

A wavelength of

From Einstein's Relatonship you have that the photon energy will be:

This is exactly the energy gap (or difference) between the two quantum states involved in the absorption of your photon of red light.