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27 November 2013 12:59 pm ,
Vol. 342 ,
The new head of the National Center for Science Education promises to "fight the good fight" against attacks on...
Analyses of the H7N9 strains isolated from four new cases show that the virus is evolving rapidly, heightening anxiety...
In 2009, Jack Szostak shared a Nobel Prize for his part in discovering the role of telomeres, the end bits of...
Science has exposed a thriving academic black market in China involving shady agencies, corrupt scientists, and...
Paper-selling agencies flourish in the aura of reputable businesses. For some scientists, it may be difficult to tell...
Data collected by satellites and floating probes have chronicled a 2-decade rise in the temperature and thickness of a...
Cholesterol, the artery-clogging molecule that contributes to cardiovascular disease, has another nasty trick up its...
Until recently, the Defense Advanced Research Projects Agency (DARPA) kept its plans for its $70 million portion of the...
- 27 November 2013 12:59 pm , Vol. 342 , #6162
- 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]