Just interested in physics.
10 Russian Doll Teller Ulam? feb 29 '12
8 What principles does an air glider use? jul 14 '11
7 How much of the energy from 1 megaton H Bomb explosion could we capture to do useful work? feb 25 '12
4 How would you figure some of the methods (in order of importance) to take a picture of the supersonic bullet with the wave it produce in 1888? may 1 '12