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Using lead foil, Adam and Jamie constructed a cube-shaped balloon with 10-foot (3 m) edges out of lead. Even without pure helium inside it (a mixture containing air was used to limit buoyancy and reduce the possibility of tearing), the balloon was buoyant enough to support a basket along with some ballast.
MythBusters is a science entertainment TV program created and produced by Australia's Beyond Television Productions for the Discovery Channel. There is no consistent system for organizing MythBusters episodes into seasons. The show did not follow a consistent calendar of on- and off-air periods for its first-aired episodes.
However, subsequent tests with separate configurations of balloon "animals", small balloons and large balloons yielded respective impacts of 6, 2.8 and 2 Gs. But in a car crash test with the best-performing balloons (the large ones), the passenger suffered 115 Gs on the head and 130 Gs on the chest, both of which would still have been fatal ...
At the plantation, the team found a full-size Douglas-fir and set it up in the same way, aiming at a bouncy castle 100 feet (30 m) away with a 40-foot (12 m) balloon "wall". With 2,400 pounds-force (11,000 N) of bending force on the trunk, Buster flew almost all the way to the castle, but he hit the ground just short of it.
The MythBusters theorized that the air being displaced by the birds' wings and the helicopter rotors was pressing down the box, which is why there was no change in the overall weight. All was in compliance with Newton's third law of motion .
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The MythBusters subjected ice and pykrete to a mechanical stress test where lead blocks were placed onto a cantilevered slab of each material to determine its breaking strength. The ice quickly failed when the weight exceeded 40 pounds (18 kg), while the pykrete had no problem supporting all 300 pounds (136 kg) of lead blocks the MythBusters ...
He told Zep guitarist Jimmy Page that his new group would go over like the world's largest lead balloon, a lead zeppelin. The spelling was changed from “lead” to “led” specifically so ...