Henri Victor Regnault

Henri Victor Regnault

Infobox Scientist
name = Henri Victor Regnault
box_width =

image_width =150px
caption = Henri Victor Regnault
birth_date = July 21, 1810
birth_place = Aachen
death_date = January 19, 1878
death_place =
residence =
citizenship =
nationality = flag|France|name=French
ethnicity =
field = thermodynamics
work_institutions =
alma_mater = École Polytechnique
doctoral_advisor =
doctoral_students =
known_for =
author_abbrev_bot =
author_abbrev_zoo =
influences = Justus von Liebig
influenced = William Thomson
prizes =
religion =
footnotes =

Henri Victor Regnault (July 21, 1810January 19, 1878) was a French chemist and physicist best known for his careful measurements of the thermal properties of gases. He was an early thermodynamicist and was mentor to William Thomson in the late 1840s.


Born in Aachen in 1810, he moved to Paris following the death of his parents at the age of eight. There, he worked for an upholstery firm until he was eighteen. In 1830, he was admitted to the École Polytechnique, and in 1832 he graduated from the École des mines.

Working under Justus von Liebig at Gießen, Regnault distinguished himself in the nascent field of organic chemistry by synthesizing several chlorinated hydrocarbons (e.g. vinyl chloride, polyvinyl chloride, dichloromethane), and he was appointed professor of chemistry at the University of Lyon. In 1840, he was appointed the chair of chemistry of the Ecole Polytechnique, and in 1841, he became a professor of Physics in the College de France.

Beginning in 1843, he began compiling extensive numerical tables on the properties of steam. These were published in 1847, and led to his receiving the Rumford Medal of the Royal Society of London and appointment as Chief Engineer of Mines. In 1854 he was appointed director of the porcelain works at Sèvres.

At Sèvres, he continued work on the thermal properties of matter. He designed sensitive thermometers, hygrometers, hypsometers and calorimeters, and measured the specific heats of many substances and the coefficient of thermal expansion of gases. In the course of this work, he discovered that not all gases expand equally when heated and that Boyle's Law is only an approximation, especially at temperatures near a substance's boiling point.

Regnault was also an avid amateur photographer. He introduced the use of pyrogallic acid as a developing agent, and was one of the first photographers to use paper negatives. In 1854, he became the founding president of the Société Française de Photographie.

In 1871, his laboratory at Sèvres was destroyed and his son Alex-Georges-Henri Regnault killed, both as a result of the Franco-Prussian War. He retired from science the next year, never recovering from these losses.

Regnault crater, on the Moon, is named after him. Some have suggested that the ideal gas constant ("R" = 8.31441 J/(mol·K)) is also named after him.

Wikimedia Foundation. 2010.

Look at other dictionaries:

  • Henri Victor Regnault — Nacimiento 21 de julio de 1810 Aquisgrán …   Wikipedia Español

  • Henri Victor Regnault — (* 21. Juli 1810 in Aachen; † 19. Januar 1878 in Auteuil) war ein französischer Physiker und Chemiker. Regnault verlor mit acht Jahren seine Eltern und ging darauf nach Paris. Bis e …   Deutsch Wikipedia

  • Henri Victor Regnault —     Henri Victor Regnault     † Catholic Encyclopedia ► Henri Victor Regnault     Chemist and physicist, b. at Aachen, 21 July, 1810; d. in Paris, 19 Jan., 1878. Being left an orphan at the age of eight he was soon obliged to work in order to… …   Catholic encyclopedia

  • Henri Victor Regnault — Pour les articles homonymes, voir Regnault. Henri Victor Regnault Henri Vic …   Wikipédia en Français

  • Victor Regnault — Henri Victor Regnault Henri Victor Regnault (* 21. Juli 1810 in Aachen; † 19. Januar 1878 in Auteuil) war ein französischer Physiker und Chemiker. Regnault verlor mit 8 Jahren seine Eltern und ging darauf nach Paris. Bis er 18 war arbeitete er in …   Deutsch Wikipedia

  • Regnault, Henri Victor — • French chemist and physicist (1810 1878) Catholic Encyclopedia. Kevin Knight. 2006 …   Catholic encyclopedia

  • Regnault , Henri Victor — (1800–1878) French physicist and chemist Regnault came from a poor background in Aachen (now in Germany) and started work as a draper s assistant. He entered the Ecole Polytechnique in 1830 and later worked under Justus von Liebig at Giessen. He… …   Scientists

  • Regnault, Henri-Victor — ▪ French chemist and physicist born July 21, 1810, Aix la Chapelle, Fr. died Jan. 19, 1878, Auteuil  French chemist and physicist noted for his work on the properties of gases.       After studying with Justus von Liebig, in Giessen, Regnault… …   Universalium

  • REGNAULT, HENRI VICTOR —    a noted French physicist, born at Aix la Chapelle; from being a Paris shopman he rose to a professorship in Lyons; important discoveries in organic chemistry won him election to the Academy of Sciences in 1840; lectured in the Collège de… …   The Nuttall Encyclopaedia

  • Henri regnault (1843-1871) — Henri Regnault Pour les articles homonymes, voir Regnault. Henri Regnault …   Wikipédia en Français