Gyration…

Extract from Wednesday’s General Relativity class:

Me, at the board writing equations: “…and so the ratio of the earth’s radius to its radius of gyration is about 0.577…”
Student raises hand and asks: “What’s radius of gyration?”
Me: “Er… It’s the average spacing everyone has to give you at the night club when you go Ker-ray-zay on the dance floor.”

As luck would have it, everyone laughed. That would have been a terrible time to have an awkward silence.

-cvj

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41 Responses to Gyration…

  1. Clifford says:

    Euler – Of course it is 😉 -cvj

  2. Euler says:

    It’s the Euler-Mascheroni constant of course