GEORG See also:

• SIMON, ABRAHAM (1622-1692)
• SIMON, JULES FRANCOIS (1814–1896)
• SIMON, RICHARD (1638–1712)
• SIMON, SIR JOHN (1816–1904)
• SIMON, THOMAS (c. 1623-1665)

SIMON See also:

• GEORG SIMON OHM (1787-1854)

OHM (1787-1854)  , See also:

• GERMAN
• GERMAN, DUTCH AND SCANDINAVIAN

German physicist, was See also:

• BORN, IGNAZ, EDLER VON (1742–1791)

born at See also:

• ERLANGEN

Erlangen on the 16th of See also:

• MARCH
• MARCH (1) (from Fr. marcher, to walk; the earliest sense in French appears to be " to trample," and the origin has usually been found in the Lat. marcus, hammer; Low Lat. marcare, to hammer; hence to beat the road with the regular tread of a soldier: cf.
• MARCH, AUZIAS (c. "1395-1458)
• MARCH, EARLS OF
• MARCH, FRANCIS ANDREW (1825– )

March 1787, and was educated at the university there . He became 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 in the See also:

• JESUITS

Jesuits' See also:

• COLLEGE (Collegium)

college at See also:

• COLOGNE (Ger. Koln, or officially, since 1900, Coln)

Cologne in 1817 and in the See also:

• POLYTECHNIC (Gr. aroWus, many, and rEXvn, an art)

polytechnic school of See also:

• NUREMBERG (Ger. Nurnberg)

Nuremberg in 1833, and in 1852 professor of experimental physics in the university of See also:

• MUNICH (Ger. Munchen)

Munich, where he died on the 7th of See also:

• JULY

July 1854 . His writings were numerous, but, with one important exception, not of the first See also:

• ORDER
• ORDER (through Fr. ordre, for earlier ordene, from Lat. ordo, ordinis, rank, service, arrangement; the ultimate source is generally taken to be the root seen in Lat. oriri, rise, arise, begin; cf. " origin ")
• ORDER, HOLY

order . The exception is his pamphlet published in See also:

• BERLIN
• BERLIN, CONGRESS AND TREATY OF
• BERLIN, ISAIAH (1725–1799)

Berlin in 1827, with the See also:

• TITLE (0. Fr. title, mod. titre, from Lat. titulus)

title .See also:

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

Die galvanische Kette mathematisth bearbeitet . This See also:

• WORK

work, the germs of which had appeared during the two preceding years in the See also:

• JOURNALS

journals of Schweigger and See also:

• POGGENDORFF, JOHANN CHRISTIAN (1796-1877)

Poggendorff, has exerted most important See also:

• INFLUENCE (Late Lat. influentia, from influere, to flow in)

influence on the whole development of the theory and applications of current See also:

• ELECTRICITY

electricity, and See also:

• OHM, GEORG SIMON (1787-1854)

Ohm's name has been incorporated in the terminology of See also:

• ELECTRICAL
• ELECTRICAL (or ELECTROSTATIC) MACHINE

electrical See also:

• SCIENCE (Lat. scientia, from scire; to learn, know)

science . Nowadays " Ohm's See also:

• LAW
• LAW (0. Eng. lagu, M. Eng. lawe; from an old Teutonic root lag, " lie," what lies fixed or evenly; cf. Lat. lex, Fr. loi)
• LAW, JOHN (1671—1729)
• LAW, WILLIAM (1686-1761)

Law," as it is called, in which all that is most valuable in the pamphlet is summarized, is as universally known as anything in physics . The See also:

• EQUATION (from Lat. aequatio, aequare, to equalize)

equation for the See also:

• PROPAGATION

propagation. of electricity formed on Ohm's printiples is identical with that of J . B . J . See also:

• FOURIER, F
• FOURIER, FRANCOIS CHARLES MARIE (1772-1837)
• FOURIER, JEAN BAPTISTE JOSEPH (1768-1830)

Fourier for the propagation of See also:

• HEAT (0. E. haktu, which like " hot," Old Eng. hat, is from the Teutonic type haita, hit, to be hot; cf. Ger. hitze, heiss; Dutch, hitte, heet, &c.)

heat; and if, in Fourier's See also:

• SOLUTION (from Lat. solvere, to loosen, dissolve)

solution of any problem of heat-See also:

• CONDUCTION, ELECTRIC

conduction, we See also:

• CHANGE (derived through the Fr. from the Late Lat. cambium, cambiare, to barter; the ultimate derivation is probably from the root which appears in the Gr. «a urmu', to bend)

change the word " temperature " to " potential " and write " electric current " instead of " See also:

• FLUX (Lat. fluxus, a flowing; this being also the meaning of the English term in medicine, &c.)

flux of heat," we have the solution of a corresponding problem of electric conduction . The basis of Fourier's work was his clear conception and See also:

• DEFINITION (Lat. definitio, from de-finire, to set limits to, describe)

definition of conductivity . But this involves an See also:

• ASSUMPTION, FEAST OF

assumption, 'undoubtedly true for small temperature-gradients, but still an assumption, viz. that, all else being the same, the flux of heat is strictly proportional to the gradient of temperature .

An exactly similar assumption is made in the statement of Ohm's law, i.e. that, other things being alike, the strength of the current is at each point proportional to the gradient of potential . It happens, how-ever, that with our See also:

• MODERN

modern methods it is much more easy to test the accuracy of the assumption in the See also:

• CASE
• CASE, JOHN (d. 1600)

case of electricity than in that of heat; and it has accordingly been shown by J . Clerk See also:

• MAXWELL
• MAXWELL, JAMES CLERK (1831–1879)

Maxwell and See also:

• GEORGE
• GEORGE, 8TH MARQUESS OF TWEEDDALE (1787-1876)
• GEORGE, HENRY (1839—1897)
• GEORGE, LAKE
• GEORGE, SAINT (d. 303)

George Chrystal that Ohm's law is true, within the limits of experimental See also:

• ERROR (Lat. error, from errare, to wander, to err)

error, even when the currents are so powerful as almost to fuse the conducting See also:

• WIRE (A.S. wir, a wire; cf. Swed. vire, to twist, M.H.G. wiere, a gold ornament, Lat. viriae, armlets, ultimately from the root wi, to twist, bind)

wire .