Claire. Posted May 23, 2017 #1 Share Posted May 23, 2017 How X-rays helped to solve mystery of floating rocks It's true—some rocks can float on water for years at a time. And now scientists know how they do it, and what causes them to eventually sink. Read more: Phys.org 2 Link to comment Share on other sites More sharing options...
DebDandelion Posted May 24, 2017 #2 Share Posted May 24, 2017 I wonder whether these rocks would fall in a vacuum like non. Porous rocks did.. Or do. 1 Link to comment Share on other sites More sharing options...
Timothy Posted May 24, 2017 #3 Share Posted May 24, 2017 10 minutes ago, DebDandelion said: I wonder whether these rocks would fall in a vacuum like non. Porous rocks did.. Or do. Of course they would fall in a vacuum, even a helium balloon falls in a vacuum, a helium balloon would also fall just as fast as a rock! 2 Link to comment Share on other sites More sharing options...
DebDandelion Posted May 24, 2017 #4 Share Posted May 24, 2017 7 hours ago, Timonthy said: Of course they would fall in a vacuum, even a helium balloon falls in a vacuum, a helium balloon would also fall just as fast as a rock! Well thank you. Didn't know that 2 Link to comment Share on other sites More sharing options...
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