- #1
Voltz
- 21
- 0
I understand the concept of an electron being raised from it's ground state by a photon with the correct wavelength, but then what? I ask because if the electron remained in it's excited state then surely shining a bright light on a material for long enough would 'saturate' it's electrons and cause it to become transparent to a given wavelength. But then if the electrons fall from their excited state then surely the energy of the photon, need to be conserved, is re-emitted by the material?
Also if electrons can only absorb wavelengths of light at exact frequencies to promote them then why are the majority of materials opaque to so many frequencies of the visible spectrum?
Also if electrons can only absorb wavelengths of light at exact frequencies to promote them then why are the majority of materials opaque to so many frequencies of the visible spectrum?