4 ms·

This was written by a high school physics teacher. Very cool.

• thinkpad20 11y ago
  He was actually my high school physics teacher! And very good. A really cool guy and super smart.
  • evancharles 11y ago
    whoa.. I think we were literally in the same class at Lab. Nice to see you here!
    • thinkpad20 11y ago
      oh, hey man! likewise! it's been a while. :)