A Filtergram Is a Photograph of the Sun's Surface Made

question 31

Multiple Choice

A filtergram is a photograph of the sun's surface made

• A) in a band of wavelengths in the infrared.
• B) in a band of wavelengths in the ultraviolet.
• C) using the Zeeman effect.
• D) with only those photons emitted in a specific spectral line.
• E) none of the above.

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