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flashing light bulbs
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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: 24191 |
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What is "light" pressure?
Started by sorincosofretBoard Physics, Astronomy & Cosmology |
Replies: 34 Views: 46728 |
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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: 19364 |
![]() by Mazurka |
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Is solar energy the same as light energy?
Started by FeliciaBoard Technology |
Replies: 10 Views: 39148 |
![]() by Bored chemist |
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What is Time? If there was no light would Time cease to be?
Started by londounkmBoard Physics, Astronomy & Cosmology |
Replies: 328 Views: 167419 |
![]() by gem |