Top network posts
- 108 Can we theoretically balance a perfectly symmetrical pencil on its one-atom tip?
- 56 Why can't I do this to get infinite energy?
- 47 Will a propeller work in a superfluid?
- 24 How do burrowing animals get enough oxygen?
- 23 Why is force a vector?
- 23 Have we directly observed the electric component to EM waves?
- 22 Why doesn't an electron ever hit (and stick on) a proton?
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