ultraviolet-astronomy
ultraviolet astronomy
noun
the branch of astronomy that deals with celestial objects emitting electromagnetic radiation in the ultraviolet range.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2013.
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Based on the Random House Dictionary, © Random House, Inc. 2013.
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Link To ultraviolet-astronomy
Collins
World English Dictionary
| ultraviolet astronomy | |
| —n | |
| the study of radiation from celestial sources in the wavelength range 91.2 to 320 nanometres, 12 to 91.2 nanometres being the extreme ultraviolet range | |
Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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00:10
Ultraviolet-astronomy
is always a great word to know.
So is bezoar. Does it mean:
| a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison. |
| a fool or simpleton; ninny. |
American Heritage
Science Dictionary
| ultraviolet astronomy
The study of celestial objects by measurement of the ultraviolet radiation they emit. Celestial objects with strong emissions in the ultraviolet range are usually significantly hotter than those whose emissions are stronger in the visible range. Because the ozone layer absorbs most ultraviolet radiation before it reaches the Earth's surface, most ultraviolet observations are made from rocket-borne or space-based instruments. |
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source
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