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The Human Eye and Colourful World
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30/08/2021 11:27 am
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Why are the ‘danger signal’ lights red in colour?
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30/08/2021 11:27 am
‘Danger’ signls are red in colour because the red coloured light having longer wavelength is the least scattered by fog or smoke particles. Due to this the red light can be seen in the same colour even from a distance.