The Best Wavelength to Use to Observe a Solar Prominence

question 75

Multiple Choice

The best wavelength to use to observe a solar prominence is

• A) 550 nm, green visible light.
• B) 656 nm, a red hydrogen emission line.
• C) 16 mm, an ultraviolet emission line.
• D) 21 cm, microwave emission.
• E) 0.02 nm, X-ray emission.

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