Multiple Choice
How do we know that sunspots are magnetic phenomena?
A) Doppler shifts in spectral lines are observed.
B) The Zeeman effect is observed in sunspots.
C) Collisional broadening is observed in spectral lines.
D) Infrared observations indicate that the sunspots are cooler than their surroundings.
Correct Answer:
Verified
Correct Answer:
Verified
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