Submarine Trivia:Why do you need red light on the submarine?

The human eye is less sensitive to long-wavelength light, so the submarine is chosen to be illuminated with…

The human eye is less sensitive to long-wavelength light, so the submarine is chosen to be illuminated with red light to allow the crew to maintain night vision and to be able to see the instrument.


Submarine Trivia:Why do you need red light on the submarine?
Submarine Trivia:Why do you need red light on the submarine?

When the outside is dim, the crew must use a periscope or monitor the service, the submarine will be cut into red light.

Or after the submarine floats up at night, the crew can go inside the submarine of the red light source to the outside of the bridge, and can quickly adapt to the external light.

In fact, not only the submarine, even the surface warship, when the battle takes place, the interior lighting of the ship will switch to red light.

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