- News Home
10 April 2014 11:44 am ,
Vol. 344 ,
The Pyrenean ibex, an impressive mountain goat that lived in the central Pyrenees in Spain, went extinct in 2000. But a...
Tight budgets are forcing NASA to consider turning off one or more planetary science projects that have completed their...
Ebola is not a stranger to West Africa—an outbreak in the 1990s killed chimpanzees and sickened one researcher. But the...
In an as-yet-unpublished report, an international panel of geoscientists has concluded that a pair of deadly...
Tropical disease experts tried and failed before to eradicate yaws, a rare disfiguring disease of poor countries. Now,...
Since 2002, researchers have reported that agricultural communities in the hot and humid Pacific Coast of Central...
Balkan endemic kidney disease surfaced in the 1950s and for decades defied attempts to finger the cause. It occurred...
- 10 April 2014 11:44 am , Vol. 344 , #6180
- 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.