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Letter (Astounding, May 1939): 1. No Large-Scale Experiments Yet, So No One Knows. 2. High Velocity Particles Plus Radient Energy—Which Is Heat. 3. Neutrons Are Released from Heavy-Hydrogen. Smash Two Heavy-Hydrogens Together, and Free Neutrons Result. Finally, Volts Measures Energy in This Sense, Because It Is a Measure of Velocity-Per-Atomic Particle.

Robert Jackson

First published May 1939
Type Essay

Date Publication Publisher Type Page
May 1939 Cover Astounding Science-Fiction, May 1939 Street & Smith Publications, Inc. MAGAZINE 156|156.1