
The SciencesDecember 1, 1939
Is Light Slowing Down?
Some Physicists Suspect that Changes Occur in the Velocity of Light, Difficult to Prove, On the Whole, the Question Remains Wide Open

Is Light Slowing Down?
Some Physicists Suspect that Changes Occur in the Velocity of Light, Difficult to Prove, On the Whole, the Question Remains Wide Open

The X-Particle's New Brother
Still Another Atomic Entity Threatens to Add Itself to the Physicist's "Who's Who In Atomic Society," Is It Real or Is It a False Alarm?