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Why does mixed light make white, but mixed paint makes brown?
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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?
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Why do we need to light the rocket fuel for a rocket to take off?
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What is "light" pressure?
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What is a halogen light bulb? What halogen is used and why is this better?
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02/02/2010 11:17:45 by Mazurka |
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Is solar energy the same as light energy?
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27/01/2023 00:00:13 by Bored chemist |