Search Details

Word: nitrogenous (lookup in dictionary) (lookup stats)
Dates: all
Sort By: most recent first (reverse)


Usage:

Last winter Chemist Wendell Meredith Stanley of the Rockefeller Institute appeared at Atlantic City where the Association for the Advancement of Science was holding its annual meeting, and informed the whole scientific world 1) that a virus was a huge molecule composed basically of nitrogen, carbon, hydrogen and oxygen, weighing 17,000,000 times as-much as a hydrogen molecule, and measuring one seven-hundred-thousandth of an inch in diameter; 2) that he had crystallized a typical virus (which causes mosaic diseases in tobacco plants) by chemical treatment; 3) that he had modified the virus molecule chemically and produced...

Author: /time Magazine | Title: Medicine: Viruses Analyzed | 7/5/1937 | See Source »

...chemicals which Dr. Gericke adds to his water are those which ordinary plants need and get from the soil-calcium, magnesium, potassium, nitrogen, sulphur, phosphorus, iron, boron, manganese, copper, zinc. Wire netting is stretched over the top of the tanks and packed with excelsior or sawdust in which the seeds are planted and from which roots sprout down into the water. This bed of litter on the netting serves to support the stalks after the plants are grown. Each tank has an area of .01 acre. In one of these Dr. Gericke grew 1,224 lb. of tomatoes, in another...

Author: /time Magazine | Title: Science: Hydroponics | 3/1/1937 | See Source »

...atmosphere of hydrogen. This was magnified and projected in color on a frosted glass screen. The engineers saw the images of the electrodes three inches apart, with the broad, vivid flow of the arc two inches wide. Then Dr. Suits produced an arc in an atmosphere of nitrogen. The arc band was pale, thin. But when he stepped up the nitrogen pressure to 1,200 Ib. per sq. in., the arc thickened and brightened until it was indistinguishable from that produced in hydrogen...

Author: /time Magazine | Title: Science: Suits's Law | 2/8/1937 | See Source »

...that the outpouring of injurious ultraviolet radiation may be so strong that human beings would have to carry umbrellas coated with lead before venturing under the glare of "Nova Cassiopeiae." Other highlights of the astronomers' convention: Nos- 60, 61, 62. In the sun hydrogen, helium, calcium, sodium, carbon, nitrogen, and many another terrestrial element have been identified by comparing the solar spectrum with very clear spectra of substances photographed in the laboratory...

Author: /time Magazine | Title: Science: Sky Men | 1/11/1937 | See Source »

...industrial chemist, Friedrich Bergius was born in what is now the Polish Corridor, became assistant to Fritz Haber who won a Nobel Prize for the fixation of atmospheric nitrogen. Bergius himself was awarded the Nobel Prize for Chemistry in 1931, now lives at Heidel- berg in close touch with its university...

Author: /time Magazine | Title: Science: Men & Molecules | 9/21/1936 | See Source »

Previous | 135 | 136 | 137 | 138 | 139 | 140 | 141 | 142 | 143 | 144 | 145 | 146 | 147 | 148 | 149 | 150 | 151 | 152 | 153 | 154 | 155 | Next