Richtern.

Brit.

/ˈrɪktə/, U.S.

/ˈrɪktər/

Origin: From a proper name. Etymon: proper name Richter.

Etymology: < the name of Charles Francis Richter (1900–85), U.S. seismologist, who devised the scale (see quot. 1935 for Richter scale n. a at sense 1).

Chiefly Geology and Physics.

1. Richter scale n.

a. A logarithmic scale devised by Richter for expressing the magnitude of an earthquake or similar seismic event as calculated from the oscillations of a seismograph trace, and ranging from negative values for micro-earthquakes to about 8·9 for the most catastrophic. See also magnitude n. 2c.

ΚΠ

1935 C. F. Richter in Bull. Seismol. Soc. Amer. 25 1 In the course of historical or statistical study of earthquakes in any given region it is frequently desirable to have a scale for rating these shocks in terms of their original energy, independently of the effects which may be produced at any particular point of observation.]

1936 Bull. Seismol. Soc. Amer. 26 152 (table) 19 shocks of magnitude 5.5–6.5, Richter scale.

1966 Times 14 Feb. 10/7 The shock waves, measuring 6.3 on the Richter scale, were centred on the Soviet nuclear test area of Semipalatinsk.

1990 Independent 29 Sept. (Weekend section) 27/1 This earthquake measured 7.3 on the Richter scale, crushed two provinces and shook five others.

2005 BBC Focus Dec. 18/2 Engineers say the new bridge is designed to withstand quakes up to 7.2 on the Richter scale.

b. figurative. A notional scale measuring the intensity of something.

ΘΚΠ

the world > relative properties > measurement > [noun] > that by which one measures

measure1340

sheltron1377

scantling1587

scale1626

gauge1692

measurer1775

Richter scale1958

1958 Cumberland (Maryland) Evening Times 10 Nov. 9/1 There's no telling what the reading was on the Richter scale, but Saturday's earth-shaker between Pitt and Notre Dame sure left 'em shaking.

1967 Boston Sunday Herald 7 May (Show Guide) 17/1 This novel..falls somewhere between the sententiousness of Allen Drury and the political astuteness of Anthony Trollope—say about 4 on a Richter scale that measures the quakes of getting and holding office.

1977 H. Greene FSO-1 xix. 171 In an arm of government as seismologically sensitive as the Foreign Service, the news..was a shock on the level of six or seven on the diplomatic Richter scale.

1991 Vanity Fair (N.Y.) Feb. 62/1 On the Richter scale of high divadom, this is a major quake.

2001 J. C. Grimwood Pashazade (2003) l. 318 Raf finally recognised the truth. She was barking, completely off the Richter scale.

2. Richter magnitude n. the magnitude of an earthquake or similar seismic event on the Richter scale.

ΘΚΠ

the world > the earth > structure of the earth > formation of features > convulsion > [noun] > earthquake > size of

magnitude1935

Richter magnitude1938

1938 L. D. Leet Pract. Seismol. ix. 304 Since the Richter magnitude scale is logarithmic in amplitudes, doubling the magnitude gives a scale logarithmic in energies and log E = log E₀ + 2 M where M is the magnitude on the Richter scale.

1977 A. Hallam Planet Earth 63/3 In general, the larger events—those with Richter magnitudes greater than 5 or 6—do not occur in regions of plate creation.

1983 Times 14 Nov. 11/5 For although the event was of moderate Richter magnitude, the damage caused was substantial and fatalities resulted.

2002 S. E. Hough Earthshaking Sci. ii. 33 The Richter magnitude of an earthquake is determined from the maximum deflection recorded on a particular type of seismometer.

This entry has been updated (OED Third Edition, June 2010; most recently modified version published online March 2022).

单词	richter
释义	Richtern. Brit. /ˈrɪktə/, U.S. /ˈrɪktər/ Origin: From a proper name. Etymon: proper name Richter. Etymology: < the name of Charles Francis Richter (1900–85), U.S. seismologist, who devised the scale (see quot. 1935 for Richter scale n. a at sense 1). Chiefly Geology and Physics. 1. Richter scale n. a. A logarithmic scale devised by Richter for expressing the magnitude of an earthquake or similar seismic event as calculated from the oscillations of a seismograph trace, and ranging from negative values for micro-earthquakes to about 8·9 for the most catastrophic. See also magnitude n. 2c. ΚΠ 1935 C. F. Richter in Bull. Seismol. Soc. Amer. 25 1 In the course of historical or statistical study of earthquakes in any given region it is frequently desirable to have a scale for rating these shocks in terms of their original energy, independently of the effects which may be produced at any particular point of observation.] 1936 Bull. Seismol. Soc. Amer. 26 152 (table) 19 shocks of magnitude 5.5–6.5, Richter scale. 1966 Times 14 Feb. 10/7 The shock waves, measuring 6.3 on the Richter scale, were centred on the Soviet nuclear test area of Semipalatinsk. 1990 Independent 29 Sept. (Weekend section) 27/1 This earthquake measured 7.3 on the Richter scale, crushed two provinces and shook five others. 2005 BBC Focus Dec. 18/2 Engineers say the new bridge is designed to withstand quakes up to 7.2 on the Richter scale. b. figurative. A notional scale measuring the intensity of something. ΘΚΠ the world > relative properties > measurement > [noun] > that by which one measures measure1340 sheltron1377 scantling1587 scale1626 gauge1692 measurer1775 Richter scale1958 1958 Cumberland (Maryland) Evening Times 10 Nov. 9/1 There's no telling what the reading was on the Richter scale, but Saturday's earth-shaker between Pitt and Notre Dame sure left 'em shaking. 1967 Boston Sunday Herald 7 May (Show Guide) 17/1 This novel..falls somewhere between the sententiousness of Allen Drury and the political astuteness of Anthony Trollope—say about 4 on a Richter scale that measures the quakes of getting and holding office. 1977 H. Greene FSO-1 xix. 171 In an arm of government as seismologically sensitive as the Foreign Service, the news..was a shock on the level of six or seven on the diplomatic Richter scale. 1991 Vanity Fair (N.Y.) Feb. 62/1 On the Richter scale of high divadom, this is a major quake. 2001 J. C. Grimwood Pashazade (2003) l. 318 Raf finally recognised the truth. She was barking, completely off the Richter scale. 2. Richter magnitude n. the magnitude of an earthquake or similar seismic event on the Richter scale. ΘΚΠ the world > the earth > structure of the earth > formation of features > convulsion > [noun] > earthquake > size of magnitude1935 Richter magnitude1938 1938 L. D. Leet Pract. Seismol. ix. 304 Since the Richter magnitude scale is logarithmic in amplitudes, doubling the magnitude gives a scale logarithmic in energies and log E = log E₀ + 2 M where M is the magnitude on the Richter scale. 1977 A. Hallam Planet Earth 63/3 In general, the larger events—those with Richter magnitudes greater than 5 or 6—do not occur in regions of plate creation. 1983 Times 14 Nov. 11/5 For although the event was of moderate Richter magnitude, the damage caused was substantial and fatalities resulted. 2002 S. E. Hough Earthshaking Sci. ii. 33 The Richter magnitude of an earthquake is determined from the maximum deflection recorded on a particular type of seismometer. This entry has been updated (OED Third Edition, June 2010; most recently modified version published online March 2022). < n.1936
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