YouTube Video of the Week: Ooey-gooey Science
July 11, 2008 InternetYou may remember this from high school science class.
Mix together cornstarch and water. Pour the mixture on a metal cookie sheet, and perch that on top of a subwoofer.
Now turn on the juice. This ooey-gooey mixture starts acting like some prehistoric creature crawling out of the primeval ooze.
Why? Cornstarch mixed with water becomes what’s known as a non-Newtonian fluid, a substance that doesn’t have a single constant viscosity. When you apply force — say, by poking it with a finger — the stuff behaves like a solid, not a liquid.
From Barcelona, Spain, comes a more dramatic cornstarch-and-water stunt. Here, the hosts of the educational show “El Hormiguero” have poured the mixture into a small swimming pool.
Due to the thick liquid’s strange properties, they can run across the pool, even jump on it. When they stop moving, however, they sink.
***
I credit the geniuses at Gizmodo.com for inspiration. Thanks, guys!
1 Comment
