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MBA, Ph.D in Management
Harvard university
Feb-1997 - Aug-2003
Professor
Strayer University
Jan-2007 - Present
A light source recedes from an observer with a speed υS that is small compared with c. (a) Show that the fractional shift in the measured wavelength is given by the approximate expression
∆ℷ/ ℷ ≈ v/c
This phenomenon is known as the redshift because the visible light is shifted toward the red. (b) Spectroscopic measurements of light at λ = 397 nm coming from a galaxy in Ursa Major reveal a redshift of 20.0 nm. What is the recessional speed of the galaxy?
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