An object that produces light is said to be luminous, while an object that doesn't is non-luminous. We see these objects because they reflect the light from luminous objects.
incandescence .
electric discharge
phosphorescence .
fluorescence .
chemiluminescence .
bio-luminescence .
triboluminescence .
LEDs .
electric discharge is the process of what passing through what?
electric current passing through a gas
what is the process of producing light through phosphorescence?
absorbing ultraviolet light to produce light over an extended period of time
how does bioluminescence occur?
with a chemical reaction in a living organism
how is triboluminescence produced?
from the friction of certain crystals being crushed, scratched or rubbed
how do LEDs work?
an electric current flows through semi conductors. More efficient than fluorescent lights
