What is Dry Ice
Dry ice has already become a valuable refrigerant, and the reason is that its temperature stands some 112 below zero. Pound for pound it refrigerates fifteen times as much as common frozen water.
Archive for the 'Science' Category
Synthetic Sunshine
THE world need never go hungry as long as the sun shines. So the chemists have declared at the Institute of Politics, at Williamstown, Massachusetts; and since scientists say so, it must be so.
Food in the future, it appears, is to be obtained from the light of the sun and the nitrogen of the [...]
Wireless Radio in 1924
WIRELESS offers more scope for enjoyment than any other hobby. This is a big claim, but any one who has cultivated wireless knows that it is a claim that can be supported by facts.
The one outstanding feature of wireless as a hobby is that it can be pursued anywhere, at any time. In dry summer [...]
Atomic Energy
Scientific thinking on Atomic Energy in 1929
A fond dream of scientists – the hope of some day obtaining energy in tremendous quantities by releasing forces known to exist within the atoms of matter – was given a Christian burial on the recent occasion of the award to the scientists Michelson and Millikan of the gold [...]
Fish Oil as Fuel for Car Engines 1927
COMING: THE FISH-OIL MOTOR
The possibility of farming the sea for motor-fuel, after all the oil and gasoline are gone, is indicated by studies of the use of fish oils and other animal oils as motor fuels reported to the French Academy of Sciences, in Paris, by Messrs. Georges Lumet and Henri Marcelet. Says Dr. E. [...]
High Frequency Sound Waves 1925
SOUNDS TOO HIGH TO HEAR
SOUND-WAVES of too high a pitch to affect the ear have been produced and are likely to prove useful, we are told by an editorial writer in The Electrical World. Such waves, of course, are not sound in the strictest sense, for sound-waves are due to vibrations within the audibility range [...]
Huge Broadcasting Vacuum Tube 1927
THE BIGGEST VACUUM TUBE
A ONE-HUNDRED-KILOWATT VACUUM power-tube is now in use at station WGY, Schenectady, New York, operated by the General Electric Company. This, it is asserted by the company in a press bulletin, is the first practical use of a tube of this size by any broadcasting station. The tube takes the place of [...]
Meteorological Achievements 1929
METEOROLOGY 1929
by CHARLES FITZHUGH TALMAN
Librarian, U. S. Weather Bureau
THE aviator now is getting weather information along the principal commercial flight-ways  of the world. As the information is supplied by radio broadcasts, it is available to the entire community, and it is found to have many useful applications altogether outside the domain of aeronautics.
Since July 1, [...]
Anthropological Achievements 1929
ANTHROPOLOGY 1929
by CLARK WISSLER, PH.D.
Curator of Anthropology,
American Museum of Natural History
A REVIEW of anthropology reveals an increase in the number of institutions and endowments supporting the study of prehistoric man and the contemporary less civilized races, accompanied by a corresponding gain in the number of investigators. Almost every part of the land surface of the [...]
GEOLOGICAL ACHIEVEMENTS 1929
GEOLOGY 1929
by ALFRED C. LANE
Professor of Geology and
Mineralogy, Tufts College
PERHAPS the great achievement of 1929 is the enlistment of more precise physical and chemical methods to help in unraveling the history of the earth and its structure.   For instance, by studying its electric conductivity, more conductive strata have been located perhaps thirty miles down.
Again, the [...]
