Red light is often used as a danger signal because of its visibility and the way it interacts with the phenomenon of scattering of light. When light travels through the atmosphere, shorter wavelengths (like blue and violet) tend to scatter more than longer wavelengths (like red and orange). This is known as Rayleigh scattering.
Because red light has a longer wavelength, it scatters less in the atmosphere, making it more visible over longer distances. In contrast, shorter wavelengths like blue and violet are scattered in all directions, which can reduce their visibility, especially in hazy or foggy conditions.
Due to this reduced scattering, red light is commonly used for traffic signals, stop signs, and other warning signs to enhance visibility and convey a sense of caution and danger to drivers and pedestrians, especially in low-visibility conditions. This choice is based on both the perceptual characteristics of human vision and the physics of light scattering.
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Answer:
because red light is much attractive in the comparison of other colour
this is my answer by own
so please give thanks
but this question is related to 6 or 7 class I think
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