A flat sheet of crown glass has a thickness of 2.6 cm. It is on top of a flat sheet of crystalline quartz that has a thickness of 3.2 cm. Light strikes the crown glass perpendicularly and travels through it and then through the crystalline quartz. In the time it takes the light to travel through the two sheets, how far would it have traveled in a vacuum

need to see circuit to get time constant

d eras and periods

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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