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5 Cards in this Set
- Front
- Back
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Droppler shift |
Red shifting: object going away from us, wavelength is longer Blue shifting: object no c in toward us, wavelength is shorter |
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Blackbodies |
Perfect absorber of light at all wavelengths |
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Blackbody radiation |
Energy emitted by black body |
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3 quantities we get from examining spectrum of a star |
1. Velocity 2. Composition 3. Temperature |
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Kirchoffs' Laws of spectra |
Continous spectrum (all colors) Solid, liquid, or a hot dense gas. Emission line spectrum (abrupt spikes in brightness) Electrons falling from high energy to low. Absorption line spectrum (wavelengths with little light) Electrons jumping from low levels to high. |
