a surfer experienced a windy day at the sea, he counted the waves passing by him per min. he counted 20 waves in one minute. can you find out the frequency of the ocean waves at that time?

as we know our atmosphere or air have different levels. every level has other gasses, and every gas has another permeability. when the light comes from lower permeability to higher permeability, it changes its direction. so that means that when the light comes from the moon to the earth, it changes it's direction many more times. it basically means that the shape of the light part of the moon is changed on the earth.

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