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If you could travel faster than light, could you travel in time?
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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: 29306 |
20/05/2018 00:53:37 by raf21 |
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What is "light" pressure?
Started by sorincosofretBoard Physics, Astronomy & Cosmology |
Replies: 34 Views: 54403 |
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: 24327 |
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: 44720 |
27/01/2023 00:00:13 by Bored chemist |
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Why do we need to light the rocket fuel for a rocket to take off?
Started by GlentoranMarkBoard Physics, Astronomy & Cosmology |
Replies: 17 Views: 26971 |
18/06/2021 18:27:36 by Just thinking |