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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
21 September 1999 4:00 pm
Today is the birthday of Louis-Paul Cailletet, a French physicist born in 1832 who was a master at liquefying gases. Cailletet grew up working in his father's ironworks and later was in charge of the works while he conducted scientific research. In 1877 he became the first to liquefy oxygen, and soon thereafter he successfully liquefied nitrogen, hydrogen, nitrogen dioxide, carbon monoxide, and acetylene--all for the first time. Cailletet published a number of papers in French scientific journals on his liquefaction work, the production of low temperatures, the passage of gases through metals, critical points, and manometers for measuring high pressures. He also invented a device for measuring the altitude of an airplane. Cailletet died in 1913.
[Source: Britannica Online]