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超音波的原理是什麼？
394,838 views |
賈克 S. 阿布拉莫維茲 |
TED-Ed
• April 2021
Read transcript
在一片漆黑的洞穴裡，蝙蝠能看見的不多，但就算閉著眼睛，牠們也能在崎嶇的地形快速飛行。那是因為蝙蝠並不是只用眼睛來引導飛行，還要靠耳朵。靠聲音來「看」似乎是不可能的，但蝙蝠、海軍軍官以及醫生都經常這麼做。這怎麼可能？賈克 S. 阿布拉莫維茲帶大家深入了解超音波的獨特特性。〔導演：蘇菲亞帕夏；旁白：艾迪生安德森；音樂：傑瑞特法卡斯〕
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