The Strength of the Magnetic Field in a Sunspot Is

question 185

Multiple Choice

The strength of the magnetic field in a sunspot is estimated from Earth by

• A) measuring the size and brightness of the sunspot.
• B) measuring the size and mass of a prominence suspended above the sunspot.
• C) measuring the shape of structures seen in the corona above sunspots during solar eclipses.
• D) observing the wavelength splitting of atomic spectral lines by the Zeeman effect.

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