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Unformatted text preview: (when the bouncing is more random) • Materials that transmit light are said to be transparent. And materials that absorb light are called opaque. • Light behaves like waves. • Waves carry energy outward from the place where the pebble landed but do not carry matter along with them. • Wavelength : the distance from one peak to the next. • Frequency : The number of peaks passing by any point each second • Wavelength*frequency=speed • The Doppler shift of an object coming toward us is called BLUESHIFT. • If an object is moving away from us, its light is shifted to longer wavelengths is called REDSHIFT because longer wavelengths of visible light are redder. • The Doppler shift tells us only the part of an object’s full motion that is directed toward or away from us. •...
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This note was uploaded on 05/01/2010 for the course ASTR 1010 taught by Professor Sethhoreinstin during the Spring '10 term at University of Illinois, Urbana Champaign.
- Spring '10