- News Home
5 December 2013 11:26 am ,
Vol. 342 ,
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...
Snake venoms are remarkably complex mixtures that can stun or kill prey within minutes. But more and more researchers...
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...
- 5 December 2013 11:26 am , Vol. 342 , #6163
- 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]