Color
spectra of elements undergoing electrical discharge
excitation.
This Java program reads a file containing a list of emission line
wavelengths and their corresponding strengths then simulates the
appearance of the spectrum in a good visual spectroscope (Great
visual representation but slow)
Absorption
and emission spectrums of many
elements
This Java program reads a file containing a list of emission and
absorption line wavelengths.(Great site to show that what a element
emits it absorbs)
When electrons are shot into a vacuum tube with mercury vapour with increasing energies, all of a sudden certain energies are absorbed. James Franck and Gutav Hertz suggested that this was due to electrons around the atom having specific "stable states" or "stationary states" supporting the Quantum Theory.