Light3 - Light The following table gives the various types...

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Light The following table gives the various types of light that astronomers study. Since frequency is a bit harder to picture, its value will not be given, though its size is denoted in general terms. The types of light listed in this table are all studied by astronomers, though for the most part a lot of astronomy is done in the visible part of the spectrum - what you can see with you eyes. The table is ordered in terms of wavelength from longest to shortest wavelengths. Don't worry about the last column; we'll get to that later. Light Wavelength in meters Wavelength in Å Frequency Blackbody Temperature (K) Radio 10 -2 and greater 10 8 Å and greater low 0.3 or less Microwaves 10 -3 to 10 -2 10 7 to 10 8 Å 0.3 to 2.9 Infrared (IR) 7 x 10 -7 to 10 -3 7000 to 10 7 Å 2.9 to 4100 Visible 4 x 10 -7 to 7 x 10 -7 4000 to 7000 Å 4100 to 7250 Ultraviolet (UV) 10 -8 to 4 x 10 -7 100 to 4000 Å 7250 to 300,000 X-ray 10 -11 to 10 -8 0.1 - 100 Å 300,000 to 3 x 10 8 Gamma-ray 10 -11 and less 0.1 Å and less
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