求大神做一道英文物理題
求大神做一道英文物理題
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?
英語人氣:350 ℃時間:2020-05-10 06:15:05
優(yōu)質(zhì)解答
太陽兩端相對地球的速度差對!就是這個,這個怎么算?知道多普勒效應不知道啊,請把你的算法告訴我,讓我參考一下算出赤道兩邊的線速度v=2πr/T 再用v除以c得到β波長記為x ,f為所給頻率xf=cx可求之后的波長分別為x乘以根號下(1-β)/(1+β)和x除以根號下(1-β)/(1+β)(這個是多普勒效應在相對論情況下的形式)兩個波長相減得6.6*10^-12 m和樓上差一倍 他那樣似乎只算了赤道一端與不轉的差,少乘個2如果我的v用的是r/t則我得到:v=1/2*1.4*10^9/(25*24*360000/4)這樣算的話我哪里做錯了?一個周期內(nèi)他啊走過的路程是2πr,除以T就是速率 r/T好像沒有任何物理意義啊
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