Danger signal are red colour . Why?.
Answers
Answer: As the light travels through the atmosphere, small particles of air scatter it. The dispersion of the light is inversely proportional to the fourth power of its wavelength. Because the red light has the largest wavelength of all colours, it is the least dispersed.
Hence, it is least scattered by the atmospheric particles. As a result, whether it is fog or smoke, red light passes comparatively easily through them. Thus, it can be seen from maximum distance, making red color the right choice to convey any danger.
Answer:
Hence, it is least scattered by the atmospheric particles. As a result, whether it is fog or smoke, red light passes comparatively easily through them. Thus, it can be seen from maximum distance, making red color the right choice to convey any danger.
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