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A Typical Doppler Shift in the Center of a Granular

Question 141

Multiple Choice

A typical Doppler shift in the center of a granular cell compared to the "rest" wavelength is 8.75 X 10-⁴ nm.Take the rest wavelength to be the Hα line of 656 nm.What is the corresponding material speed in the center of the cell?


A) 0.4 m/s
B) 0.4 km/s
C) 8.75 m/s
D) 875 m/s

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