Emission Spectra.

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Presentation transcript:

Emission Spectra

long short

Electromagnetic Spectrum short long

Bright Line Spectra

Spectra of several elements

Absorption Dark hydrogen absorption lines appear against a continuous visual spectrum, the light in the spectrum absorbed by intervening hydrogen atoms From "Astronomy! A Brief Edition," J. B. Kaler, Addison-Wesley, 1997.

Colors of various gases

Argon

Helium 580

Hydrogen 420 650

Krypton

Neon 460 735

Xenon

Water Vapor Using log scale

Water Vapor Using log scale

University of Oregon http://jersey.uoregon.edu/vlab/elements/Elements.html Applet of Periodic Table with spectrum of each element

Internet Resources Ohio State University http://www.astronomy.ohiostate.edu/~pogge/Ast350/Labs/Lamps/index.html

The End Ben Zalewski Jan. 2007

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