Word: electromagneticism
(lookup in dictionary)
(lookup stats)
Dates: all
Sort By: most recent first
(reverse)
The new calculator, based on the principle of vacuum tubes, will be intrinsically different from its two predecessors, which are respectively electromagnetic and electro-mechanical.
Extra Energy. Radar waves are electromagnetic waves like light and X rays; but since their frequency is enormously smaller, they carry much less energy per "photon."* They therefore provide what scientists call an "elegant" method of dealing out very small quantities of energy. Using a formidable-looking gadget, Lamb & Retherford...
Besides pelting the surface of the moon, the rocketeers expect to learn a great deal about the electromagnetic field around the earth, the physical and chemical characteristics of the outer atmosphere, interstellar radiation and aerodynamics.
Said Professor Blackett modestly: "It is suggested tentatively that . . . the above equation represents some new and fundamental property of rotating matter. Perhaps this relation will provide the long-sought connection between electromagnetic and gravitational phenomena."
Einstein's Relativity explained (to the serious students who understand it) the gravitational field which extends throughout space. But it did not explain the electromagnetic field, which is quite as big a subject. Physicists have plotted some minor electromagnetic laws. Engineers know some rules of thumb: they deal with...