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Q & A: Red Lights in Submarines!

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Most recent answer: 10/22/2007
I was wondering why do submarines have red interior lighting while in combat.
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- George Belegris (age 24)
University of Crete, Rethimno, Greece
George -

Thats a very good question! It turns out that some submarines use red interior lights for the same reason as airport control towers (at night), planetariums, and some movie theaters. The reason is that its easier for your eyes to adjust from red light to dark than from white light to dark. If youre going to try looking out the window of a submarine, youll want your night vision totally in gear!

For an explanation of the biology involved and some more examples of where this is useful, check out . They also explain how dim blue lights can sometimes be useful on submarines.

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(published on 10/22/2007)

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