1. Carry 12 tanks each of compressed helium. 2. So the balloon is being filled up with helium on the left-hand side, 3. Feynman decided, as a sort of amateur helium physicist, 4. Explained everything that was known at the time about liquid helium 5. It has to vanish when the helium atoms touch each other. 6. That when helium atoms touch each other, they repel. 7. Here's the balloon being filled up with helium, 8. Is when the helium atoms were very, very far apart. 9. The helium atoms had to be very far apart. 10. Whether the professionals, the real professional helium physicists,
