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are two lightbulbs are bright as one?
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Why Is Two 5 Watt Bulbs Not As Bright As A Ten watt Bulb ?
Started by neilepBoard Technology |
Replies: 12 Views: 18702 |
07/12/2008 16:41:51 by Don_1 |
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Why is there a real bright light before a light bulb burns out?
Started by paul.frBoard Physics, Astronomy & Cosmology |
Replies: 8 Views: 34517 |
01/08/2007 00:17:43 by another_someone |
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Why haven't our irises evolved to close up entirely when facing BRIGHT sunlight?
Started by fizzfezBoard Plant Sciences, Zoology & Evolution |
Replies: 1 Views: 3893 |
23/05/2010 14:09:07 by Bored chemist |
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Why do energy saving lightbulbs "flash" when off?
Started by chrisBoard Physics, Astronomy & Cosmology |
Replies: 4 Views: 55629 |
31/10/2009 21:19:16 by LeeE |
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What caused a very bright sustained green glow in thunderclouds?
Started by escudoBoard Physics, Astronomy & Cosmology |
Replies: 10 Views: 12001 |
29/11/2018 23:44:48 by Petrochemicals |