Why do ‘tactical’ flashlights use red lenses?

942 views

I’ve heard it was because red light waves don’t travel that far, but I can see the red light on an airplane wing that’s miles away.

In: Technology

7 Answers

Anonymous 0 Comments

The airplane light would be even brighter without the red cover so you’d see it even farther away. The red and green lights are so you know which direction it’s moving.

You are viewing 1 out of 7 answers, click here to view all answers.