Raoul Pictet
Template:Short description Template:Infobox scientist
Raoul-Pierre Pictet (4 April 1846 – 27 July 1929) was a Swiss physicist. Pictet is co-credited with French scientist Louis-Paul Cailletet as the first to produce liquid oxygen in 1877.<ref>Template:Cite journal</ref>
BiographyEdit
Pictet was born in Geneva. He served as professor in the university of that city. He devoted himself largely to problems involving the production of low temperatures and the liquefaction and solidification of gases.<ref>For biographical details, see Template:Cite book</ref>
On December 22, 1877, the Academy of Sciences in Paris received a telegram from Pictet in Geneva reading as follows: Oxygen liquefied to-day under 320 atmospheres and 140 degrees of cold by combined use of sulfurous and carbonic acid. This announcement was almost simultaneous with that of Cailletet who had liquefied oxygen by a completely different process.<ref name="MatriconWaysand2003">Template:Cite book</ref>
Pictet died in Paris in 1929.<ref name="ArabatzisRenn2015">Template:Cite book</ref>
WorksEdit
- Template:Cite book
- Template:Cite book
- Nouvelles machines frigorifiques basées sur l'emploi de phénomènes physicochimiques (1895)
- Étude critique du matérialisme et du spiritualisme par la physique expérimentale (1896)
- L'acétylène (1896)
- Le carbide (1896)
- Zur mechanischen Theorie der Explosivstoffe (1902)
- Die Theorie der Apparate zur Herstellung flüssiger Luft mit Entspannung (1903)
- Template:Cite book
See alsoEdit
- Liquefaction of gases
- Timeline of low-temperature technology
- Pictet Family Archives Template:In lang — includes a family tree since 1344
- Pictet's apparatus
- Production of oxygen under pressure in a retort
- Two pre-cooling refrigeration cycles: 1. SO2(-10 °C) 2. CO2 (-78 °C) oxygen flow is pre–cooled by the means of heat exchangers and expands to atmosphere via a hand valve
ReferencesEdit
<references />