Word: beryllium
(lookup in dictionary)
(lookup stats)
Dates: all
Sort By: most recent first
(reverse)
...following the clues of radio-activity that Drs. Pauli and Chadwick separately reached their conclusions. Recently Professor Walther Bothe of Giessen, Germany, bombarded the element beryllium with alpha particles. Something happened to the alpha particles. The particles contained four units of positive electricity (protons) and two of negative electricity (electrons) when they crashed into the beryllium. Two protons of an alpha particle seemed to cling to the nucleus of a beryllium atom (thereby theoretically transmuting that atom of beryllium into an atom of carbon). The particle's other two protons and the two electrons seemed changed into what Professor...
...exactly measured. The value of their work lay in its measuring electrons bound in atoms. An older method measures velocities of free electrons by use of an electric field, a magnetic field and a fluorescent screen.* Such methods disclose that some electrons move as slowly as 1% (within beryllium) the speed of light and others as swiftly as 90% (radium's Beta particles) light's speed. Light is known to travel (until Professor Albert Abraham Michelson, who last week was in a serious nervous collapse at Pasadena, figures it more accurately...
Germany's great electrical concern, Siemens & Halske, has another use for the hundreds of pounds of beryllium which it has made. Alloyed with copper, it increases the conductivity of electric wires by nearly...
Siemens & Halske's beryllium has been manufactured by a slow electrolytic process. The Schwarz process is a heat treatment. From a ton of beryl ore costing $100, Metallurgist Schwarz says he can obtain 100 Ib. of pure beryllium. The ore is plentiful in New Hampshire. New York, the Carolinas, Colorado, usually being found with feldspar deposits...
Next problem for metallurgists is to develop a beryllium alloy which is not brittle. While most aluminum-beryllium alloys will stand tensile (pulling) stresses of around 70,000 Ib. per square inch, they will support only slight bending stresses. Thin sheets of a 70-30 beryllium-alu-minum alloy will break like stiff cardboard...