7 b) chemiluminescence: light that is produced by a chemical reaction without a rise in temperature
8 c) bioluminescence: light that is produced by a biochemical reaction in a living organism
9 d) fluorescence: light that is emitted during exposure of the source to ultraviolet (UV) lightand mercurytubular fluorescentlight bulbcompact fluorescent light (CFL) bulb
10 Efficiency of Fluorescent Vs. Incandescent Bulbs
11 Even though fluorescent bulbs are 4X as efficient as incandescent bulbs (20% vs. 5%) , some people don’t like them because:they find the light from fluorescentbulbs to be harsh.these lamps contain small amountsof mercury vapour, a toxic metal.
12 Because they contain mercury, used fluorescent lamps CANNOT be thrownin the garbage.In Oakville, Rona & The Home Depotwill take back your used fluorescentbulbs.
13 Uses of Fluorescence money black light theatre fluorescent fish forensic science
14 e) phosphorescence: light that is emitted due to exposure of the source to UV light, and that continuesto be emitted for some time in the absenceof the UV light