Word: electronics
(lookup in dictionary)
(lookup stats)
Dates: all
Sort By: most recent first
(reverse)
...proton, which is 1,845 times as heavy as an electron, might make an electron its satellite. Such a simple system of one electron revolving around one proton makes up a common atom of hydrogen, simplest of the 92 elements. (Helium, next simplest, has an alpha particle for its core, two electrons for satellites. Other atoms have more protons, more electrons...
...another possible arrangement, the electrically positive proton might join with the negative electron. Generally, physicists believe, the two cancel each other. Their energy disappears. But last week Dr. Chadwick thought, "not always." The proton and electron in such case may join together like the knobs of a dumbbell...
...Nucleus, The late great Dmitri Ivanovitch Mendeleeff arranged the 92 elements in a periodic table according to weight. The late Henry Gwyn-Jeffreys Moseley found that each atomic number corresponded to the number of negatively charged electrons outside the nucleus. Element No. 1, hydrogen, has one such electron; No. 2, helium, has two; lithium, No. 3, three. . . . For each negative electron the nucleus of an atom must contain a positively charged proton. And, except in hydrogen, all nuclei were found to contain more protons than were electrons around them. The additional necessary electrons were found in the nucleus. Lithium, with...
Scientists Urey, Murphy and Brick-wedde hoped eventually to get H² in a pure form. Having two protons and one electron in its nucleus, it is twice as heavy as the previously known hydrogen, whose nucleus has one proton. The discoverers thought H² would be of no commercial use. It would give water different spectral color, new physical properties, but would not affect the taste. But since its nucleus is the simplest yet found consisting of more than one particle it would be a great aid in the study of nuclei, might add to data on the cosmic ray which...
...James's work is not quite the sort which wins a Nobel Prize in physics nowadays. The Nobel tendency in recent years has been to reward workers with the sub-atomic-X-ray effects (Taman, Compton), wave mechanics (de Broglie), electron count (Millikan), atomic structure (Bohr), quantum hypothesis (Planck), forces (Einstein). Sir James has the mathematical baggage and creative imagination requisite for joining that group. But he applies himself to descriptions of the universe and its relatively minute stellar components. It was for that work that the Franklin Institute deemed him worthy of U. S. Physics' top medal...