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Last Post 3/17/2008 3:11 PM by Paulett Liewer

sunspots

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Anonymous

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10/19/2007 9:17 AM
stasha k how are the magnetic fields determined or studied in or around the sunspots?

Paulett Liewer

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Posts:113

3/17/2008 3:11 PM
The magnetic fields around sunspots can be measured from telescopes on Earth (or from space) using an instrument called a magnetograph. A magnetograph works by measuring very small changes in the wavelength of light emitted by certain elements when they are immersed in a magnetic field. The image from a magnetograph is called a magnetogram. You can see some magnetograms at http://solar-center.stanf...s/magnetograms.html.