- News Home
5 December 2013 11:26 am ,
Vol. 342 ,
At age 30, Dutch biologist Freek Vonk has built up a respectable career as a snake scientist. But in his home country,...
Since arriving on the island of Guam in the 1940s, the brown tree snake ( Boiga irregularis ) has extirpated native...
An animal rights group known as the Nonhuman Rights Project filed lawsuits in three New York courts this week in an...
Researchers have been hot on the trail of the elusive Denisovans, a type of ancient human known only by their DNA and...
Thousands of scientists in the Russian Academy of Sciences (RAS) are about to lose their jobs as a result of the...
Dyslexia, a learning disability that hinders reading, hasn't been associated with deficits in vision, hearing, or...
Exotic, elusive, and dangerous, snakes have fascinated humankind for millennia. They can be hard to find, yet their...
Researchers have sequenced and analyzed the first two snake genomes, which represent two evolutionary extremes. The...
- 5 December 2013 11:26 am , Vol. 342 , #6163
- About Us
30 September 1997 8:00 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.]