Fifty beryllium-copper diaphragm microphones have been additionally used to record the stress of the blast wave. These indicated a blast power of 9.9 kilotons of TNT ± 0.1 kilotons of TNT (0.forty two TJ), with only one of many mechanical stress gauges working correctly that indicated 10 kilotons of TNT . Ramsey chose zero , Robert Oppenheimer selected 0.three kilotons of TNT (1.3 TJ), Kistiakowsky 1.4 kilotons of TNT (5.9 TJ), and Bethe chose eight kilotons of TNT . Rabi, the last to reach, took 18 kilotons of TNT by default, which might win him the pool. In a video interview, Bethe said that his choice of 8 kt was exactly the value calculated by Segrè, and he was swayed by Segrè’s authority over that of a more junior member of Segrè’s group who had calculated 20 kt.
Students ought to start sketching diagrams of their devices. They should draw …Continue Reading