Stephen Wolfram Q&A, For Kids (and others) [March 12, 2021]
The Stephen Wolfram Podcast
The Spiral Groove
When i was a kid, that was the way that one had music that had been recorded. And they would rotate around. There were 33 revolutions per minute and there were 60 standards for different records. As as the thing turns round, it's kind of being moved from the outside to the inside of the spiral groove. That changes the pressure on the needle at the tip of this set of head which converts into sound.
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