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Holy crap, I never realized bowling balls had this weird stuff inside

I'm sure that professional and semi-professional bowlers know that high end bowling balls are not solid but contain weird-looking cores that are supposed to make your game better. I don't know how much science is there, but you can listen to the explanation on this marketing video by ball manufacturer Storm. » 2/03/15 7:33pm 2/03/15 7:33pm

Watch a feather and a bowling ball fall at the exact same speed

To this day, I've never felt dumber than when elementary school me thought that 100 pounds of bowling balls would fall faster than 100 pounds of feathers. This video doesn't show that riddle in action but something even cooler: how things fall at the same rate inside the world's largest vacuum chamber. » 11/03/14 9:21pm 11/03/14 9:21pm