See also:

• PYROMETER (Gr. iri p, fire, µErpov, a measure)

PYROMETER (Gr. iri p, See also:

• FIRE (in O. Eng. f j'r; the word is common to West German languages, cf. Dutch vuur, Ger. Feuer; the pre-Teutonic form is seen in Sanskrit pu, pavaka, and Gr. irup; the ultimate origin is usually taken to be a root meaning to purify, cf. Lat. purus)

fire, µErpov, a measure)  , an See also:

• INSTRUMENT (Lat. instrumentum, from insincere, to build up, furnish, arrange, prepare)

instrument for measuring high temperatures . The See also:

• TERM

term was first used by See also:

• MUSSCHENBROEK, PIETER VAN (1692–1761)

Musschenbroek to denote an instrument wherein the expansion of a See also:

• METAL
• METAL (through Fr. from Lat. metallum, mine, quarry, adapted from Gr. µATaXAov, in the same sense, probably connected with ,ueraAAdv, to search after, explore, µeTa, after, aAAos, other)

metal See also:

• ROD (O.E. rodd, probably related to Norw. rudda, stick, rodda, stake)
• ROD, EDOUARD (1857-1910)

rod measured the temperature . Discontinuous thermoscopes, depending on the See also:

• FUSION

fusion of a metal or See also:

• SALT (a common Teutonic word, cf. Dutch zout, Ger. Salz, Scand. salt; cognate with Gr. &Xs, Lat. sal)
• SALT, SIR TITUS, BART

salt, are also employed . See also:

• PRINSEP, JAMES (1999-1840)
• PRINSEP, VALENTINE CAMERON (1838-1904)

Prinsep prepared a See also:

• SERIES (a Latin word from serere, to join)

series of See also:

• ALLOYS (through the Fr. aloyer, from Lat. alligare, to combine)

alloys of See also:

• SILVER

silver and See also:

• GOLD
• GOLD [symbol Au, atomic weight 195.7(H = 1),197.2(0 =16)]

gold, and of gold and See also:

• PLATINUM [symbol Pt, atomic weight 145.0 (0=16)]

platinum, whose melting points, as determined by accurate See also:

• INSTRUMENTS

instruments, covered a range of temperature from 954 to 1775°, at intervals of from 25° to 3o° . By placing ingots in a See also:

• FURNACE

furnace and observing which one melted a See also:

• FAIR

fair See also:

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

idea of the temperature was obtained . Carnelley and See also:

• WILLIAMS
• WILLIAMS, JOHN (1582-1650)
• WILLIAMS, JOHN (1796-1839)
• WILLIAMS, ROGER (c. 1604–1684)
• WILLIAMS, ROWLAND (1817-1870)
• WILLIAMS, SIR WILLIAM FENWICK

Williams employed certain salts of known melting point; whilst the Seger's cones, employed in See also:

• PORCELAIN

porcelain manufacture, depend on the fusion of small cones made of See also:

• CLAY (from O. Eng. claeg, a word common in various forms to Teutonic languages, cf. Ger. Klei)
• CLAY, CASSIUS MARCELLUS (1810-1903)
• CLAY, CHARLES (1801–1893)
• CLAY, FREDERIC (1838–1889)
• CLAY, HENRY (1777–1852)

clay .