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Does A Fully Mirrored Room Require Less Light To Light It?
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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 |
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20/05/2018 00:53:37 by raf21 |
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Is (fully) recycled paper and non-recycled paper the same?
Started by The ScientistBoard General Science |
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27/01/2011 10:43:30 by Mazurka |
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What is "light" pressure?
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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: 18559 |
02/02/2010 11:17:45 by Mazurka |
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Is solar energy the same as light energy?
Started by FeliciaBoard Technology |
Replies: 10 Views: 38780 |
27/01/2023 00:00:13 by Bored chemist |