What is Time? If there was no light would Time cease to be?
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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: 22849 |
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What is "light" pressure?
Started by sorincosofretBoard Physics, Astronomy & Cosmology |
Replies: 34 Views: 44633 |
![]() 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: 18100 |
![]() by Mazurka |
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Is solar energy the same as light energy?
Started by FeliciaBoard Technology |
Replies: 10 Views: 38404 |
![]() 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: 20057 |
![]() by Just thinking |