austrian musicians 中文意思是什麼
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To work out a mathematical relationship of the “ dopplereffect ” ， relating the pitch to the relative motion of source andobserver ， the austrian scientist christian johann doppler placedtrumpeters on a railroad flat car and musicians with a sense ofabsolute pitch near the tracks. a locomotive engine pulled theflat car back and forth at different speeds for two days. themusicians on the ground “ recorded ” the trumpet notes as the trainapproached and as it receded
為了計算出「多普勒效應」的一個數學關系，即音調和運動中的聲源和觀察者之間的相對關系，奧地利科學家克里斯蒂?約翰?多普勒讓幾位吹號人坐在一節平板火車上，讓幾個對音調特別敏感的音樂家坐在鐵軌附近。
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