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6 March 2014 1:04 pm ,
Vol. 343 ,
Early in April, the first of a fleet of environmental monitoring satellites will lift off from Europe's spaceport in...
Since 2000, U.S. government health research agencies have spent almost $1 billion on an effort to churn out thousands...
Magdalena Koziol, a former postdoc at Yale University, was the victim of scientific sabotage. Now, she is suing the...
Antiretroviral drugs can protect people from becoming infected by HIV. But so-called pre-exposure prophylaxis, or PrEP...
Two studies show that eating a diet low in protein and high in carbohydrates is linked to a longer, healthier life, and...
Considered an icon of conservation science, researchers at World Wildlife Fund (WWF) headquarters in Washington, D.C.,...
The new atlas, which shows the distribution of important trace metals and other substances, is the first product of...
- 6 March 2014 1:04 pm , Vol. 343 , #6175
- About Us
22 February 1999 8:00 pm
German physicist Heinrich Hertz, a pioneer of radio communication, was born on 22 February 1857. Hertz demonstrated for the first time that electric waves are essentially the same as light waves: In his experiments, both traveled in straight lines at the same speed and could be reflected, refracted, and polarized. Hertz also designed equipment that could detect electric waves 20 meters away. His inventions set the stage for the development of wireless telegraph and radio communication, which spanned the Atlantic by 1901. The unit of frequency called the hertz, or one cycle per second, is named in his honor.