Modern Physics
2nd Edition
ISBN: 9780805303087
Author: Randy Harris
Publisher: Addison Wesley
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Textbook Question
Chapter 2, Problem 54E
The light from galaxy NGC 221 consists of a recognizable spectrum of wavelengths. However, all are shifted toward the shorter−wavelength end of the spectrum. In particular, the calcium “line” ordinarily observed at 396.85 nm is observed at 396.58 nm. Is this galaxy moving toward or away from Earth? At what speed?
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Chapter 2 Solutions
Modern Physics
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