Super Motion-Dampening GelOctober 18th, 2007
It’s not every day you see someone -asking- to be hit in the head with a shovel. The linked video is for a compound named D3O, and there’s a bit more explanation here.
I saw a similar (but more impressive) video where they drop an egg 72ft onto an inch-thick gel pad. The egg was unharmed. The gel pad is made of BetaGel, part of a line of AlphaGel shock absorption products from the Japanese company GELTEC.