Unformatted text preview: Isaac Newton. The shape of sunspots is evidence that they are caused by the Sun's magnetic field. Also, sun spots tend to move in cycles that demonstrate the magnetic field is being wound up and released, like a spring. The Zeeman effect also demonstrates that sun spots are due to magnetic fields, since sun spots come in pairs, apparently one of each polarity. And, thanks to George Ellery Hale, we have the spectroheliograph which allows us to view the magnetic field of a sun spot. The theory of twisting magnetic fields is supported by sun spots. Sun spots are the center of twisting magnetic fields where surrounding gases are repelled by the strong magnetism of the spots, giving them a much darker appearance....
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- Spring '08
- Black Holes, Sir Isaac Newton, sun spots, George Ellery Hale