The Geekiest T-Shirt That I've Ever Bought

ZapperZ (noreply@blogger.com)
I just had to get this one. I found this last week during the members night at Chicago's Adler Planetarium. The people that I were with of course knew that this is referring to "force", but they didn't get the connection. So I had to explain to them that Newton's 2nd law, i.e. F=ma can be expressed in a more general form, i.e. F = dp/dt, where p is momentum mv. Thus F = d/dt (mv) Of course, I'm not surprised that most people, and probably most of Adler's visitors, would not get this unless they