goniometern.

/ɡəʊnɪˈɒmɪtə/

Etymology: < French goniomètre, < Greek γωνία angle + -mètre -meter comb. form².

1. An instrument used for measuring angles. Two kinds of goniometers are used in measuring angles of crystals, the old contact- or hand-goniometer invented by Carangeot, and the more accurate reflecting goniometer invented by Wollaston.

ΘΚΠ

the world > relative properties > measurement > measuring instrument > [noun] > for measuring angles

protractor1602

recipiangle1728

goniometer1766

trigonometer1767

repeating circle1799

angulometer1817

sine bar1915

1766 B. Martin (title) The new art of surveying by the goniometer.

1802 Count de Bournon in Philos. Trans. (Royal Soc.) 92 314 I have measured this angle with more than usual care,..having taken the precaution of using several different goniometers.

1854 J. Scoffern in Orr's Circle Sci., Chem. 19 Carangeot's goniometer..consists of two metal rulers fastened together at the pivot a.

1895 N. Story-Maskelyne Crystallogr. §373 The contact- or hand-goniometer.

1895 N. Story-Maskelyne Crystallogr. §374 The reflection-goniometer of Wollaston.

attributive.1867 J. Hogg Microscope (ed. 6) i. ii. 56 Schmidt's goniometer positive eye-piece is so arranged as to be easily rotated.

2. An apparatus for determining the direction from which detected radio waves are coming, without the need for a rotating aerial, consisting essentially of a rotatable detector coil coupled to two fixed primary coils at right angles to one another, each of these being in turn connected to one of a pair of directional aerials also at right angles. Also (and originally) called a radiogoniometer n.

ΘΚΠ

society > communication > telecommunication > radio communications > radio equipment > [noun] > device for determining direction of radio waves

radiogoniometer1908

goniometer1921

the mind > attention and judgement > discovery > instrument for detection > [noun] > radar system > apparatus used in > direction finder

radiogoniometer1908

radio direction finder1916

goniometer1921

1921 B. Leggett Wireless Telegr. viii. 233 The station was located by the Germans, doubtless by means of first a goniometer and then balloon observation, and for several days it was heavily shelled.

1932 F. E. Terman Radio Engin. xvi. 591 When it is desirable to avoid rotating a loop antenna..it is possible to obtain the effect of rotation by using two loop antennas at right angles to each other and combining the outputs in a goniometer.

1961 H. Jasik Antenna Engin. Handbk. xxviii. 21 Since dipoles are usually employed at frequencies above 50 Mc, a capacity goniometer is frequently used to avoid the necessity of shielding an inductive goniometer.

Draft additions June 2008

Originally: any of various instruments for measuring angles in craniometry and anthropometry (now rare). In later use: (Medicine) any of various devices used to measure the range of motion of a joint.

ΚΠ

1839 S. G. Morton Crania Americana 252 The following diagram represents the instrument, which may be called the Facial Goniometer, as applied to a cranium for the purpose of measurement.

1851 R. Dunglison Med. Lexicon (ed. 8) 413/1 A ‘facial goniometer’ has been invented by Mr Turpenny, of Philadelphia, which is well adapted for measuring the facial angle.

1875 Biennial Retrospect Med. Surg., & Allied Sci. 46 He employed a goniometer, the middle point of which was placed in the axis of rotation of the trunk.

1905 A. B. Judson Infl. Growth on Congenital & Acquired Deformities 21 The flexion of the foot on the leg may be conveniently measured by the goniometer.

1959 Amer. Jrnl. Surg. 98 356/1 Limitation of motion caused by contracture may be measured by a goniometer.

2003 Observer 10 Aug. 2 [She] performs her posture assessment which involves measuring joint angles with a goniometer and examining me with a plumb line..for symmetry.

This entry has not yet been fully updated (first published 1900; most recently modified version published online March 2022).

单词	goniometer
释义	goniometern. /ɡəʊnɪˈɒmɪtə/ Etymology: < French goniomètre, < Greek γωνία angle + -mètre -meter comb. form². 1. An instrument used for measuring angles. Two kinds of goniometers are used in measuring angles of crystals, the old contact- or hand-goniometer invented by Carangeot, and the more accurate reflecting goniometer invented by Wollaston. ΘΚΠ the world > relative properties > measurement > measuring instrument > [noun] > for measuring angles protractor1602 recipiangle1728 goniometer1766 trigonometer1767 repeating circle1799 angulometer1817 sine bar1915 1766 B. Martin (title) The new art of surveying by the goniometer. 1802 Count de Bournon in Philos. Trans. (Royal Soc.) 92 314 I have measured this angle with more than usual care,..having taken the precaution of using several different goniometers. 1854 J. Scoffern in Orr's Circle Sci., Chem. 19 Carangeot's goniometer..consists of two metal rulers fastened together at the pivot a. 1895 N. Story-Maskelyne Crystallogr. §373 The contact- or hand-goniometer. 1895 N. Story-Maskelyne Crystallogr. §374 The reflection-goniometer of Wollaston. attributive.1867 J. Hogg Microscope (ed. 6) i. ii. 56 Schmidt's goniometer positive eye-piece is so arranged as to be easily rotated. 2. An apparatus for determining the direction from which detected radio waves are coming, without the need for a rotating aerial, consisting essentially of a rotatable detector coil coupled to two fixed primary coils at right angles to one another, each of these being in turn connected to one of a pair of directional aerials also at right angles. Also (and originally) called a radiogoniometer n. ΘΚΠ society > communication > telecommunication > radio communications > radio equipment > [noun] > device for determining direction of radio waves radiogoniometer1908 goniometer1921 the mind > attention and judgement > discovery > instrument for detection > [noun] > radar system > apparatus used in > direction finder radiogoniometer1908 radio direction finder1916 goniometer1921 1921 B. Leggett Wireless Telegr. viii. 233 The station was located by the Germans, doubtless by means of first a goniometer and then balloon observation, and for several days it was heavily shelled. 1932 F. E. Terman Radio Engin. xvi. 591 When it is desirable to avoid rotating a loop antenna..it is possible to obtain the effect of rotation by using two loop antennas at right angles to each other and combining the outputs in a goniometer. 1961 H. Jasik Antenna Engin. Handbk. xxviii. 21 Since dipoles are usually employed at frequencies above 50 Mc, a capacity goniometer is frequently used to avoid the necessity of shielding an inductive goniometer. Draft additions June 2008 Originally: any of various instruments for measuring angles in craniometry and anthropometry (now rare). In later use: (Medicine) any of various devices used to measure the range of motion of a joint. ΚΠ 1839 S. G. Morton Crania Americana 252 The following diagram represents the instrument, which may be called the Facial Goniometer, as applied to a cranium for the purpose of measurement. 1851 R. Dunglison Med. Lexicon (ed. 8) 413/1 A ‘facial goniometer’ has been invented by Mr Turpenny, of Philadelphia, which is well adapted for measuring the facial angle. 1875 Biennial Retrospect Med. Surg., & Allied Sci. 46 He employed a goniometer, the middle point of which was placed in the axis of rotation of the trunk. 1905 A. B. Judson Infl. Growth on Congenital & Acquired Deformities 21 The flexion of the foot on the leg may be conveniently measured by the goniometer. 1959 Amer. Jrnl. Surg. 98 356/1 Limitation of motion caused by contracture may be measured by a goniometer. 2003 Observer 10 Aug. 2 [She] performs her posture assessment which involves measuring joint angles with a goniometer and examining me with a plumb line..for symmetry. This entry has not yet been fully updated (first published 1900; most recently modified version published online March 2022). < n.1766
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