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...manufacturers last week agreed to drop mercury from the process of making felt hats. A substitute, hydrogen peroxide and nitric acid, will be used. Thus ends one of the oldest industrial hazards, which still causes dangerous nerve disorders among 10% of 22,000 U.S. hat workers. The agreement will soon be sent to various State Legislatures for enactment into...

Author: /time Magazine | Title: Medicine: Mercury Out | 6/2/1941 | See Source »

...Medical Research to the annual meeting of the Society in Philadelphia. It was a picture of the virus which causes the mosaic disease of tobacco plants, one of the largest molecules known to chemists. It is a rod-shaped structure, about 40,000,000 times the size of the hydrogen atom (basic unit of atomic and molecular weight). But even at this size it could be photographed only with the recently developed electron microscope (TIME, Oct. 28), which by using electron beams instead of light can magnify images 50 times greater than the best light microscopes...

Author: /time Magazine | Title: Science: A Look at a Molecule | 5/5/1941 | See Source »

...green color imparted to diamonds by an hour of cyclotron bombardment with deuterons, heavy hydrogen ions, is very much like that characteristic of the occasional diamonds exposed to radium rays, Dr. Berman said...

Author: NO WRITER ATTRIBUTED | Title: DIAMONDS ARE TURNED GREEN | 4/14/1941 | See Source »

Helium is the hardest of all gases to liquefy. The standard method involves liquid hydrogen, which is unstable and highly explosive. Kapitza's method not only did away with liquid hydrogen, but. cut the cost of making a quart from $50 to $5, the time from 24 hours to two hours or less. In the neighborhood of absolute zero, ordinary lubricants freeze hard as iron and Kapitza's problem was to find a lubricant for his compressor. He solved the problem by allowing a little helium vapor to squeeze through the piston clearance, so that the helium itself...

Author: /time Magazine | Title: Science: From an Old Sketch | 12/30/1940 | See Source »

...inventive wizard named Peter Quill. Against the machinations of foreign agents he has thrown the resources of a laboratory that would startle even Jules Verne. He has discovered a substance called therminite which burns at 6,000 degrees, melts all metals, renders water explosive by breaking it down into hydrogen and oxygen. He has invented a delayed-action "explosive" which explodes so gradually that it can be used on sinking submarines to expel water and chlorine. He has devised a magnetic screen so powerful that when it is struck by bombs it shatters them to fragments. Last week...

Author: /time Magazine | Title: Radio: Defender | 10/14/1940 | See Source »

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