Uncategorized
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About Time
To find out the official time, visit the joint Web site of the National Institute of Standards and Technology and the U.S. Naval Observatory. Two ultraprecise clocks contribute to a pool used to define “coordinated universal time.” These two clocks are not supposed to differ by more than one ten-millionth of a second. The site […]
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From the June 3, 1932, issue
GENERATOR LOAD DIVIDED FOR BETTER OPERATION Without the pretty girl, this massive stationary winding of a turbine electric generator might appear to be the size of a spool of thread. But contrast emphasizes the machines 83,300 kilovolt-ampere capacity. The black arms are heavily insulated butt-ends of copper bars in which electricity is to be generated. […]
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Bio Light
Devoted to organisms that chemically generate light, the bioluminescence Web pages from the University of California, Santa Barbara provide vivid images of this phenomenon in all its splendor. The site also furnishes basic information about the chemistry and biology of bioluminescence and provides links to recent research on the topic. Go to: http://lifesci.ucsb.edu/~biolum/
- Physics
Matter waves: Be fruitful and multiply
For the first time, physicists induced atoms to amplify a selected matter wave in a manner analogous to a cascade of photons amplifying the characteristic electromagnetic wave of an optical laser.
- Materials Science
Impurity clouds from all sides now
For the first time, scientists have obtained detailed, three-dimensional images of line defects in steel.
- Materials Science
Small-scale glues stick to surfaces
Tailored molecular glues can connect together tiny particles for nanotechnology applications.
- Chemistry
The World of Wine
Improved analytical instruments and powerful computers are now enabling scientists to better determine a chemical fingerprint for products from different wine-producing regions.
- Health & Medicine
The brew for a slimmer you
Green tea contains a compound that triggers the body to burn more fat.
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19071
This article would better have been titled “Deprivation of dietary antioxidants leads to selective tumor inhibition.” The issue of antioxidants and cancer is an area of controversy, but the great preponderance of literature on this subject supports the use of antioxidants as sole therapy and with conventional oncologic care. These effects have had limited usefulness […]
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Antioxidants may help cancers thrive
By curbing a natural process that rids the body of damage, antioxidant vitamins can aid cancer growth.
- Earth
Wretched weather sealed explorer’s fate
Unusually low temperatures hindered Robert Falcon Scott's polar expedition in 1912.
- Earth
Taking a mountain’s measure
A survey of Mount Everest alters its official elevation to 29,035 feet.
