问题描述：
求大神做一道英文物理题
Because th Sun rotates on its axis,one edge of Sun moves toward Earth and the other moves away.The Sun rotates approximately once every 25 days,and the diameter of the Sun is 1.4*10^9m.Hydrogen on the Sun emits light of frequency 6.16*10^14Hz from the two sides of the Sun.What changes in the wavelengh are observed?
Because th Sun rotates on its axis,one edge of Sun moves toward Earth and the other moves away.The Sun rotates approximately once every 25 days,and the diameter of the Sun is 1.4*10^9m.Hydrogen on the Sun emits light of frequency 6.16*10^14Hz from the two sides of the Sun.What changes in the wavelengh are observed?
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