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If the speed of light is constant, time must be constant too?
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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: 26983 |
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What is "light" pressure?
Started by sorincosofretBoard Physics, Astronomy & Cosmology |
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What is a halogen light bulb? What halogen is used and why is this better?
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Is solar energy the same as light energy?
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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: 24414 |
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