(August 18, 2022 at 9:37 am)polymath257 Wrote: Why does a solid rubber ball 'defy gravity' when submerged in water?
Depends on how solid the rubber, but if it is less dense than the medium it is surrounded by then it will float.
Using the displacement of liquid to measure the volume of a stone? Not sure how that proves Newton's theories about perpetual motion, you might want to explain that a little more.
Same goes for using fire to suck up liquid into a vacuum.