03-25-2017, 01:32 AM
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#1 |
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Registered User
Join Date: Feb 2017
Location: New York, USA
Posts: 170
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Why the red light is used as a danger signal?
Why red? Why not another color light?
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03-26-2017, 07:50 AM
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#2 |
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Registered User
Join Date: Mar 2017
Posts: 1
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Because it's the color of blood. i think so
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03-26-2017, 08:52 AM
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#3 |
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Registered User
Join Date: Mar 2017
Location: Pune, India
Posts: 4
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Red color has got the longest wavelength because of that it is visible from long distance.
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