Louis Paul Cailletet
The son of an ironmaster, Louis Paul Cailletet worked on physics and chemistry (starting with the properties of iron for his whole career, and is especially known for studying the liquefaction of gasses.[1][2]
He attended the Lycée Henri IV and the École des mines de Paris.[3]
Cailletet devised a multi-lens automatic photography machine for use on unmanned balloons:
Cailletat has devised an arrangement for registering the heights reached in a balloon which does not carry observers. A camera is carried which has two lenses, both of which project their images on the same plate. One of these lenses is focussed on an aneroid barometer, and the other takes the view of the landscape in the usual way. By means of a piece of clockwork exposures are made at certain intervals, and fresh films are automatically rolled into position. The film therefore records the reading of the barometer as well as the view of the landscape. Cailletet has a method of checking the readings of the barometer by comparing the known distances between two places, as measured on the ordnance map, with their apparent distance as measured on the photograph. The focal length of the lens being known, it was possible in this way to calculate the height of the balloon. He also devised an apparatus with nine lenses for taking panoramic views for naval purposes, which was brought into use at Lagoubran. The exposures were made electrically, and the results were successful in showing the details of all the forts over a radius of 4 miles.[4]
Cailletet was president of the Aéro-Club de France.[5]
He was eulogized by Henry Deutsch de la Meurthe and Ernest Archdeacon.[5]
Publications by or about Louis Paul Cailletet
- Cailletet and Collardeau, 1892, Recherches expérimentales sur la chute des corps et sur la résistance de l'air à leur mouvement. Expériences exécutées à la Tour Eiffel (Simple title: Experimental research on the fall of bodies and the resistance of air to their movement. Experiences executed at the Eiffel Tower, Journal: L'Aéronaute)
- Cailletet and Collardeau, 1893, Expériences sur la résistance de l'air et de divers gaz au mouvement des corps (Simple title: Experiments on the resistance of air and various gases to the movement of bodies, Journal: L'Aérophile)
- Colardeau and Cailletet, 1893, Expériences sur la resistance de l'air et de divers gaz au mouvement des corps (Simple title: Experiments on the resistance of air and various gases to the movement of bodies, Journal: L'Aérophile)
- Cailletet, 1897, Appareil destiné à mesurer les hauteurs atteintes par les aérostats (Simple title: Apparatus for measuring the heights achieved by aerostats, Journal: L'Aéronaute)
- Publication 2478, 1900, Cailletets panorama Apparat für militärische Erkundungen (Simple title: Cailletets panorama apparatus for military exploration, Journal: Ill. Aër. Mitt.)
- Cailletet, 1901, Sur l'emploi de l'oxygène dans les ascensions à grandes hauteurs (Simple title: On the use of oxygen in climbs at great heights, Journal: C. R. Acad. Sci.)
- Cailletet, 1902, New apparatus for inhaling oxygen (Simple title: New apparatus for inhaling oxygen, Journal: Aër. Journ.)
- Cailletet, 1902, Sur l'emploi de l'oxygène dans les ascensions à grandes hauteurs (Simple title: On the use of oxygen in climbs at great heights, Journal: Dritte Vers. Int. Komm. Wiss. Luftsch.)
- Publication 2477, 1906, Louis Paul Cailletet (Simple title: Louis Paul Cailletet, Journal: Wien. Luftsch. Zeit.)
- Publication 132, 1908, Aero Club of France (Simple title: Aero Club of France, Journal: American Aeronaut)
- Crocco, 1908, Sulla resistenza dell' aria nel moto non uniforme (Simple title: On the resistance of the air in the uneven motion, Journal: Boll. Soc. Aer. Ital.)
- Cailletet, 1912, President of the Aero-Clubs of France, death (Simple title: President of the Aero-Clubs of France, death, Journal: Öst. Flug-Zeit.)
- Cailletet, 1913, M. Paul Cailletet (Simple title: M. Paul Cailletet, Journal: Fly)
Louis Paul Cailletet participated in these events:
- International Aeronautical Conference at Berlin (Start date: 1902-05-20, Locations: Berlin, Country: DE, Tech focus: Meteo • LTA • Kite • Instrument • Military • Ballon-sonde)
- Le Banquet Wilbur Wright (Start date: 1908-11-05, Locations: Paris, Country: FR, Tech focus: Airplane)
References
- ↑ Bernard Pire, "Cailletet, Louis Paul (1832–1913)" ,Encyclopedia Universalis, accessed 3 August 2018.
- ↑ " Louis-Paul Cailletet", Encyclopedia Brittanica, accessed 3 August 2018.
- ↑ Faidra Papanelopoulou, "Louis Paul Cailletet: The liquefaction of oxygen and the emergence of low-temperature research", Notes & Records of the Royal Society Vol. 76 (2013), pp. 355–373.
- ↑ Hildebrandt, 1908, Airships Past and Present, pp. 289–291
- ↑ 5.0 5.1 "Mort de M. Cailletet, membre de l'Institut, Pt de l'Aéro-Club de France", La Revue Aérienne, 6e Année, No. 102, 10 January 1913; 5.
Links
- w:fr:Louis Paul Cailletet; w:Louis Paul Cailletet
- http://cths.fr/an/savant.php?id=1072
- https://www.hydroretro.net/etudegh/louis-paul-cailletet.pdf
| Names | Louis Paul Cailletet |
|---|---|
| Birth date | 1832-09-21 |
| Death date | 1913-01-05 |
| Countries | FR |
| Locations | Paris |
| Occupations | scientist |
| Tech areas | LTA, Photography, Instrument |
| Affiliations | Fédération Aéronautique Internationale, Permanent International Aeronautic Commission, International Commission for Scientific Aeronautics, Aéro-Club de France |
| Wikidata id |
