What specific physical effect was used to verify the existence of intense magnetic fields in sunspots?
A) Observation of ionized atoms in the region of the sunspots
B) The Zeeman effect,the splitting of spectral absorption lines
C) The measurement of relative strengths of spectral absorption lines from various atoms
D) Doppler shift of light from sunspots

Question

Quizplus · Accepted Answer

The Zeeman effect is the splitting of spectral absorption lines when exposed to a magnetic field. This effect was observed in the spectral lines of atoms in sunspots, verifying the presence of intense magnetic fields in these regions.

What Specific Physical Effect Was Used to Verify the Existence