How does incandescent and fluorescent bulbs produce light?
Incandescent light is produced by electricity passing through a filament in a housing usually filled with argon. Like a light bulb for instance. Coatings, color of glass, and gasses used can change color and spectrum of light. Other gasses like krypton and halogen can produce cooler spectrum of light A fluorescent bulb works by cathodes at each end of a tube that gas is housed (usually argon, neon, xenon, krypton) as a medium to bounce electrons from atom to atom producing light. Phosphor coatings are used to change color and are heated to produce light. Starters are used to ionize the mercury gas to arc the electricity to start the reaction. Electrons are passed onto higher electron levels ionizing them, passing the electrons from atom to atom. This causes photons to be released (light). Color of light can be changed by what gas is housed inside also. Blends of gasses and phosphors can change the spectrum of light.
