Jacques Babinet

Jacques Babinet (March 5 1794 in Lusignan, France – October 21 1872 in Paris, France) was a French physicist, mathematician, and astronomer who is best known for his contributions to optics. Babinet started his studies at the Lycée Napoléon, but was persuaded to abandon a legal education for the pursuit of science. A graduate of the École Polytechnique, which he left in 1812 for the Military School at Metz, he was later a professor at the Sorbonne and at the Collège de France. In 1840, he was elected as a member of the Académie Royale des Sciences of Paris. He was also an astronomer of the Bureau des Longitudes.

Among Babinet's accomplishments are the 1827 standardization of the Ångström unit for measuring light using the red Cadmium line's wavelength, and the principle (Babinet's principle) that similar diffraction patterns are produced by two complementary screens. He was the first to suggest using wavelengths of light to standardise measurements. His idea was first used between 1960 and 1983, when a meter was defined as a wavelength of light from krypton gas.

Babinet was interested in the optical properties of minerals throughout his career. He designed and created many scientific instruments utilized to determine crystalline structure and polarization properties, including the polariscope and an optical goniometer to measure refractive indices. The Babinet compensator, an accessory useful in polarized light microscopy, was built with twin, opposed quartz wedges having mutually perpendicular crystallographic axes, and is still widely employed in microscopy. This design avoids the problems inherent in the basic quartz wedge, where the zero reading coincides with the thin end of the wedge, which is often lost when grinding the plate during manufacture.

Expanding his fascination of diffraction to meteorology, Babinet spent a significant amount of time in the study of rainbow optics. His astronomical research focused on Mercury's mass and the Earth's magnetism, while his inventions included valve improvements for air pumps and a hygrometer. In geography and hydrogeomorphology, the Baer-Babinet Law helps to explain and predict directionality in the course of rivers. Babinet's cartography work includes homalographic projections where the parallels are rectilinear and meridian lines are elliptical.

In addition to his brilliant lectures on meteorology and optics research, Babinet was also a great promoter of science, an amusing and clever lecturer, and a brilliant, entertaining and prolific author of popular scientific articles. Unlike the majority of his contemporaries, Babinet was beloved by many for his kindly and charitable nature.

References

* [http://www.newadvent.org/cathen/02178b.htm Catholic Encyclopedia article]

Further reading

*cite encyclopedia
last = Frankel
first = Eugene
title = Babinet, Jacques
encyclopedia = Dictionary of Scientific Biography
volume = 1
pages = 357-358
publisher = Charles Scribner's Sons
location = New York
date = 1970
isbn = 0684101149

Persondata
NAME = Babinet, Jacques
ALTERNATIVE NAMES =
SHORT DESCRIPTION = French physicist, mathematician and astronomer
DATE OF BIRTH = March 5 1794
PLACE OF BIRTH = Lusignan, France
DATE OF DEATH = October 21 1872
PLACE OF DEATH = Paris, France


Wikimedia Foundation. 2010.

Look at other dictionaries:

  • Jacques Babinet — Naissance 5 mars 1794 Lusignan (France) Décès 21 octobre 1872 (à 78 ans) Paris (France) …   Wikipédia en Français

  • Jacques Babinet —     Jacques Babinet     † Catholic Encyclopedia ► Jacques Babinet     French physicist, born at Lusignan, Vienne, 5 March, 1794; died at Paris, 21 October, 1872. He began his studies at the Lycée Napoléon. There he became a pupil of Binet, whose… …   Catholic encyclopedia

  • Jacques Babinet — Jacques Babinet. Jacques Babinet (* 5. März 1794 in Lusignan, Vienne, Frankreich; † 21. Oktober 1872 in Paris, Frankreich) war ein französischer Physiker. Babinet trat zunächst als Offizier in die französische Artillerie ein, verließ aber 1814… …   Deutsch Wikipedia

  • Babinet — Jacques Babinet. Jacques Babinet (* 5. März 1794 in Lusignan, Vienne, Frankreich; † 21. Oktober 1872 in Paris, Frankreich) war ein französischer Physiker. Babinet trat zunächst als Offizier in die französische Artillerie ein, verließ aber 1814… …   Deutsch Wikipedia

  • Jacques — Jacques, die französische Form des männlichen Vornamens Jakob. Bekannte Namensträger sind: Inhaltsverzeichnis A B C D E F G H I J K L M N O P Q R S T U V W X Y Z …   Deutsch Wikipedia

  • Babinet'sches Prinzip — Das Babinetsche Prinzip (auch Babinetsches Theorem) ist ein Satz aus der Optik und besagt, dass das Beugungsbild zweier geometrisch komplementärer Blenden abgesehen von der geometrischen optischen Achse (nullte Beugungsordnung) auf dem Schirm… …   Deutsch Wikipedia

  • Babinet —   [babi nɛ], Jacques, französischer Physiker, * Lusignan (Département Vienne) 5. 3. 1794, ✝ Paris 21. 10. 1872; zuerst Artillerieoffizier, dann Mathematiklehrer, später Professor in Paris. Babinet befasste sich v. a. mit optischen Problemen… …   Universal-Lexikon

  • Babinet, Jacques — • French physicist (1794 1872) Catholic Encyclopedia. Kevin Knight. 2006 …   Catholic encyclopedia

  • Babinet — (spr. Babineh), Jacques, geb. 1794 zu Lusignan, erhielt seine Ausbildung auf dem Lycée Napoleon, besuchte dann seit 1811 die Polytechnische Schule zu Paris u. endlich 1813 die Artillerieschule[117] zu Metz; er wurde hierauf Offizier, verließ aber …   Pierer's Universal-Lexikon

  • Babinet — (spr. nä), Jacques, Physiker, geb. 5. März 1794 zu Lusignan im Depart. Vienne, gest. 21. Okt. 1872 in Paris, war zuerst Artillerieoffizier, dann Professor der Mathematik zu Fontenay le Comte, Professor der Physik in Poitiers und Paris, auch… …   Meyers Großes Konversations-Lexikon

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”

We are using cookies for the best presentation of our site. Continuing to use this site, you agree with this.