Must be why NASA when first in space did top experiments. I remember seeing them decades ago.
Now I wonder why SpaceShipOne used floating candy? Maybe to prove eating out weighs,weight.
My grandfather eng. development of some of the first tanks in ww2 and o rings...now I know why as a toddler he gave me blocks(oblong ones and many shapes),magnets,paper,pencil and tops to play with. Can't say it helped or proved anything.