Jul
9th
Thu
9th
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
wow, this is so simple yet never really understood. amazing (zaney)
