Calvin and Hobbes Record Player - by Bill Watterson for June 05, 1990
Transcript:
Dad: Playing a record? I'll show you something interesting. Compare a point on the label with a point on the record's outer edge. They both make a complete circle in the same amount of time, right? Calvin: Yeah... Dad: But the point on the record's edge has to make a bigger circle in the same time. So it goes faster. See, two points on one disk move at two speeds, even though they both make the same revolutions per minute!
He’s wrong, though. The record moves, not the needle, so the speed is constant.