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Why are danger and stop signals red? | StemPy Lab
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Why are danger and stop signals red?
Physics
Easy
High School (9–10)
Optics › Light in the Atmosphere
Created by
StemPy Lab
Why are danger and stop signals red?
Our eyes see only red at night
Red light is scattered least by fog and smoke, so it can be seen from far away
Red is the brightest colour
Red light travels fastest in air
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Created by StemPy LabCreated by StemPy Lab