Thursday
August 27, 2015

Homework Help: Chemistry

Posted by Jon on Sunday, December 5, 2010 at 11:34pm.

Describe the spectrum of the light from a fluorescent lamp and from an incandescent (tungsten filament) lamp, and try to explain what you observe.

So fluorescent lamps use electricity to excite mercury vapour, and the excited atoms produce short-wave UV light which causes a phosphor (from the phosphorescent coating) to fluoresce, producing visible light.

Incandescent light bulbs use electric current to flow through a tungsten wire which gets heated to the point where it begins to emit thermal radiation.. but I'm not exactly sure how this gets transmitted into visible light?

Can someone please help me out with these explanations? Maybe explain the specific emission spectra of each type of light and why it produces the light it does? I'm confused. And the explanations online are getting really complex

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