Quantum levels are fixed levels with a logarithmic, descending quantum pattern in the visible spectrum of light that can be observed through a spectrometer while looking at intense flows of electricity through the various halides on the periodic table in a vacuum tube. They also have some use in chemistry when dealing with the movement of electrons to different orbital levels around the atom and the energy levels involved in such actions.

See also

• Quantum mechanics
• Absorption spectrum
• Emission spectrum