You know that the frequency and wavelength of an oscillation are related by the velocity of the wave (Eq. 1). In standing waves, the wave velocities of the different harmonics are the same. Think about why this may be and explain in your notebook. (Hint: The wave velocity is dependent on the static properties of the oscillating object like string mass and tension).

a.

explanation:

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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