SPEED OF SOUND

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Aristotle’s writings about echos implied that sound travels slower than light. Al-Biruni (973-1048) later wrote that sound travels slower than light.

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mike-echo-mountains

The delay of the echo when you shout or clap shows that sound travels slower than light.

SLOWER THAN LIGHT
Aristotle’s writings about echos implied that sound travels slower than light.
Al-Biruni (973-1048) later wrote that sound travels slower than light. Neither of them did any measurement of the time and distance traveled by the sound.


Image by https://openclipart.org/user-detail/Bibbleycheese
image credit https://openclipart.org/detail/177452/mike-the-mic-with-echoing-mountains
image is cc0 public domain

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