Why rainbow is not visible on afternoon?
We all have seen Rainbows. But they are usually formed in mornings or evenings not in afternoon. Because we know that for rainbow formation, sunrays has to pass through raindrops. Then refraction of rays take place and light is split into 7 colours.
But though in afternoon, rain comes and rays passes through them,refraction wont take place. Because, for rainbow formation, sunrays has to be in 40 degree angle to that of rain drops. In afternoon, Sun will not be in 40 degree position. It is possible only in morning(when Sun is coming up) and in afternoon (when Sun is going down). Thats why rainbow is also formed only in mornings and evenings.
We all have seen Rainbows. But they are usually formed in mornings or evenings not in afternoon. Because we know that for rainbow formation, sunrays has to pass through raindrops. Then refraction of rays take place and light is split into 7 colours.
But though in afternoon, rain comes and rays passes through them,refraction wont take place. Because, for rainbow formation, sunrays has to be in 40 degree angle to that of rain drops. In afternoon, Sun will not be in 40 degree position. It is possible only in morning(when Sun is coming up) and in afternoon (when Sun is going down). Thats why rainbow is also formed only in mornings and evenings.
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