Monthly Archives: June 2017

Std Dev X * Std Dev P >= h / 2

Today, in Gregory Benford’s book The Berlin Project, I came across the first quantum mechanical dirty joke I’ve ever seen (it’s no doubt an oldie, but, hey, I never actually studied quantum mechanics).

It’s attributed to Enrico Fermi:

Poor Werner Heisenberg! When he finds the right position, he loses his momentum. And when he has the energy, he doesn’t have the time.

I find it a grand commentary on the human condition that one of the most profound and subtle products of the human mind — quantum mechanics — can be the basis of dirty jokes :).