Science and Invention

At the present day when many momentous problems in science and international politics are being weighed in the balance of logic and reason, it is a very opportune time, it seems, to listen to the...

Simple Daylight Television, Baby Electric Planes, Cosmic Rays of Tremendous Intensity Foreseen by Scientific Wizard By H. Winfield Secor, E. E. Do you use an alternating-current induction motor? A...