January 2nd, 2010


My kids understand physics!!!

Alissa, earlier today, was pretending to have a son. She then explained that her son is older than she is. I asked how that could possibly be, and she replied: "Every day we put him in a spaceship traveling near the speed of light for an hour until he became older than I am." I didn't bother pointing out that she had the twin paradox backwards, because I was so proud that she remembers the twin paradox.

Meanwhile, Tani had a question about... well, here are some photos I just took of the ad-hoc "visual aids" that I made. See if you can guess what his question was about. Collapse )