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Efficiency of light as energy source?
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What are "energy" and "work" ?
Started by The ChampBoard Physics, Astronomy & Cosmology |
Replies: 108 Views: 106323 |
31/12/2018 20:54:40 by yor_on |
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If we put a mirror millions of light years away and reflected earth, could we see what earth looked like millions of years ago?
Started by thedocBoard Physics, Astronomy & Cosmology |
Replies: 9 Views: 29438 |
20/05/2018 00:53:37 by raf21 |
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Can matter in a vacuum create dark energy and dark matter effects?
Started by GoscienceBoard Physics, Astronomy & Cosmology |
Replies: 1 Views: 20196 |
10/05/2011 23:37:24 by yor_on |
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What is "light" pressure?
Started by sorincosofretBoard Physics, Astronomy & Cosmology |
Replies: 34 Views: 54723 |
13/02/2018 19:46:54 by Bill S |
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What is a halogen light bulb? What halogen is used and why is this better?
Started by chrisBoard Technology |
Replies: 4 Views: 24445 |
02/02/2010 11:17:45 by Mazurka |