- News Home
17 April 2014 12:48 pm ,
Vol. 344 ,
Officials last week revealed that the U.S. contribution to ITER could cost $3.9 billion by 2034—roughly four times the...
An experimental hepatitis B drug that looked safe in animal trials tragically killed five of 15 patients in 1993. Now,...
Using the two high-quality genomes that exist for Neandertals and Denisovans, researchers find clues to gene activity...
A new report from the Intergovernmental Panel on Climate Change (IPCC) concludes that humanity has done little to slow...
Astronomers have discovered an Earth-sized planet in the habitable zone of a red dwarf—a star cooler than the sun—500...
Three years ago, Jennifer Francis of Rutgers University proposed that a warming Arctic was altering the behavior of the...
- 17 April 2014 12:48 pm , Vol. 344 , #6181
- 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]