Difference between revisions of "Fluorescent lightbulb"
Jump to navigation
Jump to search
(→Operation: fixed misdirected wikilink) |
DavidB4-bot (talk | contribs) (→Footnotes: Spelling, grammar, and general fixes) |
||
| Line 7: | Line 7: | ||
== Footnotes == | == Footnotes == | ||
| − | <references> | + | <references/> |
| − | [[ | + | [[Category:Technology]] |
Revision as of 14:31, June 24, 2016
Fluorescent light bulbs are lamps that use the phenomena of fluorescence to produce light. Fluorescence is the emission of radiation by a substance that is exposed to an external source of radiation.[1] They are much more efficient than traditional incandescent bulbs, since incandescent bulbs waste most of their energy producing heat rather than light.[2]
Operation
Fluorescent bulbs consist of glass tubes filled with low pressure mercury-argon vapor. The inner wall of the tube is coated with a white phosphor. A heated filament emits electrons into the vapor, causing the vapor atoms to emit ultraviolet light. This ultraviolet light is then absorbed by the white phosphor and re-emitted as visible light.[3]