Scientists Confirm the Incredible Existence of ‘Second Sound’
Scientists Confirm the Incredible Existence of ‘Second Sound’
www.popularmechanics.com Scientists Confirm the Incredible Existence of ‘Second Sound’
Here’s visible proof for the first time ever.
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comments
"If sound is so great why haven't they made sound 2?"
I dont need sound 2: the sequel. I've heard enough.