See also:

• LOUIS
• LOUIS (804–876)
• LOUIS (893–911)
• LOUIS, JOSEPH DOMINIQUE, BARON (1755-1837)
• LOUIS, or LEWIS (from the Frankish Chlodowich, Chlodwig, Latinized as Chlodowius, Lodhuwicus, Lodhuvicus, whence-in the Strassburg oath of 842-0. Fr. Lodhuwigs, then Chlovis, Loys and later Louis, whence Span. Luiz and—through the Angevin kings—Hungarian

LOUIS See also:

• LOUIS POINSOT (1777–1859)

POINSOT (1777–1859)  , See also:

• FRENCH
• FRENCH, DANIEL CHESTER (1850– )
• FRENCH, NICHOLAS (1604-1678)

French mathematician, was See also:

• BORN, IGNAZ, EDLER VON (1742–1791)

born at See also:

• PARIS
• PARIS (also called ALEXANDROS)
• PARIS, ALEXIS PAULIN (1800-x881)
• PARIS, BRUNO PAULIN GASTON (1839-1903)
• PARIS, FRANCOIS DE (169o-1727)
• PARIS, LOUIS PHILIPPE ALBERT
• PARIS, TREATIES OF (1814-1815)

Paris on the 3rd of See also:

• JANUARY

January 1777 . In 1794 he became a See also:

• SCHOLAR, SCHOLARSHIP

scholar at the Ecole Polytechnique, which he See also:

• LEFT

left in 1796 to See also:

• ACT (Lat. actus, actum)

act as a See also:

• CIVIL

civil engineer . In 1804 he was appointed See also:

• PROFESSOR (the Latin noun formed from the verb profiteri, to declare publicly, to acknowledge, profess)

professor of See also:

• MATHEMATICS (Gr. /saBnµar1Kil, Sc. vOcvn or E7rlQTt'µn; from p iN.La, "learning" or "science ")

mathematics at the Lycee, in 1809 professor of See also:

• ANALYSIS (Gr. avci and Meta, to break up into parts)

analysis and See also:

• MECHANICS

mechanics, and in 1816 examiner at the Ecole Polytechnique: On the See also:

• DEATH

death of J . L . See also:

• LAGRANGE, JOSEPH LOUIS (1736-1813)

Lagrange, in 1813, See also:

• POINSOT, LOUIS (1777–1859)

Poinsot was elected to his See also:

• PLACE (through Fr. from Lat. platea, street; Gr. IrAar6s, wide)

place in the Academie See also:

• DES

des Sciences; and in 184o he became a member of the See also:

• SUPERIOR

superior See also:

• COUNCIL (Lat. concilium, from cum, together, and the root cal, to call)

council of public instruction . In 1846 he was made an officer of the See also:

• LEGION (Lat. legio)

Legion of See also:

• HONOUR (Lat. honos or lwnor, honoris; in English the word was spelled with or without the u indifferently until the 17th century, but during the 18th century it became fashion-able to spell the word " honor "; Johnson's and Webster's Dictionaries stereoty

Honour; and on the formation of the See also:

• SENATE (Lat. senatus, from root sen-, as in senex, old; the root is the Sanskrit sana, cf. Gr. 'vos; the same element appears in senor, seigneur, seneschal)

senate in 1852 he was chosen a member of that See also:

• BODY

body . He died at Paris on the 5th of See also:

• DECEMBER (Lat. decent, ten)

December 1859 . Poinsot's earliest See also:

• WORK

work was his Elemens de statique (1803; 9th edition, 1848), in which he introduces the See also:

• IDEA (Gr. Ibia, connected with i&eiv, to see; cf. Lat. species from specere, to look at)

idea of statical couples and investigates their properties . In the Theorie nouvelle de la rotation des See also:

• CORPS (pronounced as in French, from which it is taken, being a late spelling of tors, from Lat. corpus, a body; cf. " corpse ")

corps (1834) he treats the See also:

• MOTION (Lat. motio, from movere, to move)
• MOTION, LAWS OF

motion of a rigid body geometrically, and shows that the most See also:

• GENERAL
• GENERAL (Lat. generalis, of or relating to a genus, kind or class)

general motion of such a body can be represented at any instant by a rotation about an See also:

• AXIS (Lat. for " axle ")

axis combined with a See also:

• TRANSLATION

translation parallel to this axis,and that any motion of a body of which one point is fixed may be produced by the See also:

• ROLLING

rolling of a See also:

• CONE (Gr. Kwvos)

cone fixed in the body on a cone fixed in space . The previous treatment of the motion of a rigid body had in every See also:

• CASE
• CASE, JOHN (d. 1600)

case been purely See also:

• ANALYTICAL

analytical, and so gave no aid to the formation of a See also:

• MENTAL

mental picture of the body's motion; and the See also:

• GREAT

great value of this work lies in the fact that, as Poinsot himself says in the introduction, it enables us to represent to ourselves the motion of a rigid body as clearly as that of a moving point . In addition to See also:

• PUBLISHING

publishing a number of See also:

• WORKS

works on geometrical and See also:

• MECHANICAL

mechanical subjects, Poinsot also contributed a number of papers on pure and applied mathematics to Lionville's See also:

• JOURNAL
• JOURNAL (through Fr. from late Lat. diurnalis, daily)

Journal and other scientific See also:

• PERIODICALS

periodicals . See J .

L . F . See also:

• BERTRAND, HENRI GRATIEN, COMTE (1773-1844)

Bertrand, Discours aux funerailles de Poinsot (Paris, 1860) .