MIT is Making Giant Rocks Float

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There is never a dull moment here in Boston with all the colleges and institutions that produce a prodigious amount of interesting public and private content. When people say that Boston really is the center of the universe, they mean it! With many of the best minds in the world concentrated in such a small area, it’s no wonder that many strange and fascinating things are are offered up constantly to residents of Boston.

Take, for instance, a giant floating rock:3061027-slide-4-inspired-by-stonehenge-mits-2000-pound-megalith-floats-uprig

Yes, that’s a rock. A really, really big one.

…and naturally, we have MIT to thank for it. The brainiacs across the Charles got inspired by the theory that the blocks used at Stonehenge were actually floated down the river Avon, and decided they wanted to try floating boulders too, so they did!

The megaliths at Stonehenge are believed to have been floated down River Avon with inflated animal bladders, so the Buoy Stone uses a similar technique to keep its mass bobbing in the Charles River. Although it appears to be solid concrete from the outside, the Buoy Stone contains a foam core, surrounding a carefully calibrated internal bladder which can accommodate up to 6,000 pounds of river water. That’s enough to float the stone’s nearly 2,000-pound weight indefinitely.