That stuff is called Oobleck. It's literally just corn starch and water.
If you've never played with it, then you definitely 100% should fucking make some when you get home. If you don't have any corn starch, then buy some. It's cheap AF. Almost free.
Just mix that shit in water. Guess the amount and adjust as you go. Literally can't get it wrong.
In the video you posted, there's frankly just a bit too much corn starch, and adding a bit of water would allow it to really go back into the runny state when he stops working it.
Mythbusters made a tank of the stuff and one of them stands on it... as long as he's pumping his legs like he's running up a mountain. As soon as he stops, he sinks.
Fun fact: a physicist at my work invented speed bumps out of the stuff. It's only a bump if you're driving too fast. Go over it slowly, and it squishes out of the way. Go over it too fast and it hardens into a solid bump. That's cool AF, but it never really caught on. Only place I see them is on campus.
I'll look into the deeper physics of it, though, to try to explain what is actually happening on the molecular level.
I'm not actually sure.
Reply With Quote