719
just beat it
(mander.xyz)
A place for majestic STEMLORD peacocking, as well as memes about the realities of working in a lab.

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I think I've got your point: that's not whar we call sound, but yes, the showel and casing will reverberate
https://www.engineeringtoolbox.com/sound-speed-solids-d_713.html