What really keeps a train on its tracks? (2:27)
Richard Feynman explains. What I love about this clip is that it gets me wondering why I’ve never wondered about this before. And what else I should be wondering about. If that’s whetted your appetite, here’s some more Feynman goodness. (via kottke.org)I’m embarassed that I never knew this
I. Love. Trivia. That isn’t trivial.
This is really interesting. This guy looks like he’s trembling in excitedness.
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