Absorption of a photon
- Remember, the energy of a photon is Energy = h f
where f = frequency and h = Planck's constant = 6.626 x 10-34Js.
- The electron can make the jump from the ground level if the photon has
f = (En - E1)/h
- If the atom is already excited and is in, say, the N'th level
it can jump to the n'th level if the photon has frequency
f = (En - EN)/h
- This process is called absorption since the
atom absorbs a photon.
- Only photons with specific frequencies can be absorbed.