JOHANNES See also:

• JOHANNES WISLICENUS (1835-1902)

WISLICENUS (1835-1902)  , See also:

• GERMAN
• GERMAN, DUTCH AND SCANDINAVIAN

German chemist, was See also:

• BORN, IGNAZ, EDLER VON (1742–1791)

born on the 24th of See also:

• JUNE

June 1835 at See also:

• KLEIN, JULIUS LEOPOLD (1810–1876)

Klein-Eichstedt, in Thuringia . In 1853 he entered See also:

• HALLE (known as HALLE-AN-DER-SAALE, t0 distinguish it from the small town of Halle in Westphalia)
• HALLE, SIR CHARLES (originally KARL HALLE) (1819-1895)

Halle University, but in a few months emigrated to See also:

• AMERICA

America with his See also:

• FATHER

father . For a See also:

• TIME (0. Eng. Lima, cf. Icel. timi, Swed. timme, hour, Dan. time; from the root also seen in " tide," properly the time of between the flow and ebb of the sea, cf. O. Eng. getidan, to happen, " even-tide," &c.; it is not directly related to Lat. tempus)
• TIME, MEASUREMENT OF
• TIME, STANDARD

time he acted as assistant to See also:

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

Professor E . N . Horsford at Harvard, and in 1855 was appointed lecturer at the See also:

• MECHANICS

Mechanics' See also:

• INSTITUTE (from Lat. instituere, to establish or set up)

Institute in New See also:

• YORK
• YORK (HOUSE OF)
• YORK, EDMUND OF LANGLEY, DUKE OF (1341-1402)
• YORK, EDWARD
• YORK, FREDERICK AUGUSTUS, DUKE OF (1763-1827)
• YORK, RICHARD, DUKE

York . Returning to See also:

• EUROPE

Europe in 1856, he continued his studies at See also:

• ZURICH
• ZURICH (Fr. Zurich; Ital. Zurigo)

Zurich University, where nine years later he became professor of See also:

• CHEMISTRY
• CHEMISTRY (formerly "chymistry"; Gr. xvµela; for derivation see ALCHEMY)

chemistry . This See also:

• POST

post he held till 1872 . He then succeeded A . F . L . Strecker in the See also:

• CHAIR (in. Mid. Eng. chcere, through O. Fr. chaire or chaiere, from Lat. cathedra, later caledra, Gr. xaOi3pa, seat, cf. "cathedral"; the modern Fr. form chaise, a chair, has been adopted in English with a particular meaning as a form of carriage; chaire

chair of chemistry at See also:

• WURZBURG

Wurzburg, and in 1885, on the See also:

• DEATH

death of A . W .

H . See also:

• KOLBE, ADOLPHE WILHELM HERMANN (1818–1884)

Kolbe, was appointed to the same professorship at See also:

• LEIPZIG

Leipzig, where he died on the 6th of See also:

• DECEMBER (Lat. decent, ten)

December 1902 . As an See also:

• ORIGINAL

original investigator he devoted himself almost exclusively to organic chemistry, and especially to stereo-chemistry . His See also:

• WORK

work on the lactic acids cleared up many difficulties concerning the See also:

• COMBINATION (Lat. combinare, to combine)

combination of See also:

• ACID (from the Lat. root ac-, sharp; acere, to be sour)

acid and alcoholic properties in oxy-acids in See also:

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

general, and resulted in the See also:

• DISCOVERY

discovery of two substances differing in See also:

• PHYSICAL

physical properties though possessing a structure of proved chemical identity . To this phenomenon, then noticed for the first time, he gave the name of " geometrical See also:

• ISOMERISM

isomerism." So far back as 1869, before the publication of the See also:

• DOCTRINE

doctrine of J . H. See also:

• VAN

van't Hoff and J . A . Le See also:

• BEL

Bel, he expressed the See also:

• OPINION (Lat. opinio, from opinari, to think)

opinion that the See also:

• ORDINARY (med. Lat. ordinarius, Fr. ordinaire)

ordinary constitutional formulae did not afford an adequate explanation of certain See also:

• CARBON (symbol C, atomic weight 12)

carbon compounds, and suggested that See also:

• ACCOUNT
• ACCOUNT (through O. Fr. acont, Late Lat. comptum, cornputare, to calculate)

account must be taken of the verschiedeneLagerung ihrer Atome See also:

• IM(K2+a2+h2—2 ah cos 0)

im Raume . Later (see See also:

• DIE
• DIE (Fr. de, from Lat. datum, given)

Die rdumliche Anordnung der Atome in organischen Molekiilen, 1887) he extended the application of the van't Hoff-Le Bel theory, believing that it, together with the supposition that there are " specially directed forces, the See also:

• AFFINITY (Lat. affinitas, relationship by marriage, from offinis, bordering on, related to; finis, border, boundary)
• AFFINITY, CHEMICAL

affinity-energies," which determine the relative position of atoms in the See also:

• MOLECULE (from mod. Lat. molecula, the diminutive of moles, a mass)

molecule, afforded a method by which the spatial arrangement of atoms in particular cases may be ascertained by experiment . See also:

• WISLICENUS, JOHANNES (1835-1902)

Wislicenus is also known for his work on aceto-acetic ester and its application as a synthetical See also:

• AGENT (from Lat. agere, to act)

agent . He was awarded the See also:

• DAVY, SIR HUMPHRY

Davy See also:

• MEDAL (Fr. medaille, from Lat. metallum)

medal by the Royal Society in 1898 .