Teach-Astronomy-Optical-Detectors

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http://www.teachastronomy.com/ In the first few hundred years of optical astronomy using telescopes, the only detector was the human eye. When astronomers looked through the telescope from the time of Galileo for a long time afterwards they could only see what the eye could see, and if they were... More

2010-07-07

Added Jul 7, 2010  

Channel Education

Duration 1:36   |   views 473


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