- News Home
6 March 2014 1:04 pm ,
Vol. 343 ,
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...
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...
- 6 March 2014 1:04 pm , Vol. 343 , #6175
- About Us
30 September 1998 7:00 pm
Today is the birthday of Hans Geiger, born in 1882, a German physicist known for the techniques he developed for detecting and counting charged particles. Geiger investigated the charge and nature of alpha particles and devised techniques for counting them. In 1925 Geiger and his colleague Walther Muller came up with a device, which was designed to be compact and portable and to measure alpha, beta, and other types of radiation. By 1928 the Geiger-Muller counter was being produced and used in radiation research labs. After noting that counters in separate rooms periodically picked up simultaneous bursts of radiation--the first detection of cosmic ray showers--Geiger became interested in studying cosmic radiation. In 1937 he and his colleague Otto Zeiller arrayed nine counters in a circle to determine the angular distribution of a cosmic ray shower.
[Source: Charles Coulston Gillespie, Ed., Dictionary of Scientific Biography (Charles Scribner's Sons, New York, 1973).]