schlieren.

Brit.

/ˈʃlɪərə/, U.S.

/ˈʃlɪrə/

Inflections: Plural schlieren.

Origin: A borrowing from German. Etymon: German Schliere.

Etymology: < German Schliere (feminine) irregular streak, stria (1864 or earlier in physics, 1877 or earlier in geology), inferred singular < Middle High German schlieren, plural of schlier, schliere ulcer (Old High German scliero lump), further etymology unknown.In plural form schlieren after the German plural form.

Chiefly in plural.

1. Physics. A zone or layer in a transparent medium or material whose refractive index differs sufficiently from that of the surrounding medium or material to produce a noticeable deviation in the path taken by light passing through it.

ΘΚΠ

the world > matter > physics > electromagnetic radiation > light > diffraction > [noun] > band, strip

fringe1718

schliere1867

isogyre1902

isochromatic1924

Brewster fringes1934

1867 Amer. Jrnl. Sci. 93 390 But if L [sc. the lens] is not perfect, if it contains a flaw, f (i. e., Schliere), then this will refract light differently from the body of the lens.

1946 F. Schneider Qualitative Org. Microanalysis ii. 22 The appearance of schlieren indicates the presence of impurities.

2001 G. S. Settles Schlieren & Shadowgraph Techniques ii. 28 Schlieren may have refractive-index gradients in one, two, or three dimensions.

2. Geology. A linear or flattened mass in igneous rock which is slightly denser than its surroundings, has a diffuse boundary, and has typically been elongated by the flow of magma.

ΘΚΠ

the world > the earth > structure of the earth > constituent materials > rock > texture or colour > [noun] > texture > schliere

schliere1882

1882 Amer. Jrnl. Sci. 124 197 It seemed to me, however, to represent only a slight difference in age and to be probably a case of ‘schlieren’ in the sense of E. Reyer.

1937 Mem. Geol. Soc. Amer. No. 5. 25 Sheet-like bodies, in which certain minerals appear in abnormal proportions, are called flow layers, or schlieren.

2013 Jrnl. Struct. Geol. 51 193/2 Schlieren are important because, in many cases, they record the last physical process to affect the magma.

Compounds

attributive in plural. With reference to a method of observing and recording schlieren (sense 1) in a transparent medium or material (as in the flow of fluids of differing densities), in which the specimen is illuminated with a collimated beam of light and the diffraction pattern resulting from localized refraction is photographed or displayed on a screen; as schlieren illumination, schlieren method, schlieren photography, etc.The observation of schlieren is of particular use in the study of the flow of fluids of varying density.

ΚΠ

1866 London, Edinb., & Dublin Philos. Mag. 4th Ser. 32 115 I imagined that by using the very ingenious arrangement which M. Toeppler has described in his paper, ‘Observations by a New Optical Method,’ under the name Schlierenapparatus, the mist could be still more readily perceived.]

1888 Proc. U.S. Naval Inst. 14 265 We will now quote a few experiments made by Toepler illustrating the sensitiveness of the Schlieren method.

1931 Trans. Inst. Mining Engin. 80 18 Experiments carried out with Schlieren photography at Buxton are being supplemented at the U.S. Bureau of Mines Explosives Station at Pittsburgh.

1956 Nature 10 Mar. 485/1 A schlieren system has been combined with a rotating mirror camera so that the shock propagation can be recorded in the regions outside the arc as well as in the arc channel.

1971 Sci. Amer. May 118/1 In its simplest form the schlieren apparatus consists of a light source, two lenses, a pair of knife-edges and a sheet of photosensitive film.

2006 Sci. News 169 219/1 Then, in the early 1990s, Weinstein figured out ways to make schlieren pictures without mirrors.

2016 T. Hübert et al. Sensors Safety & Process Control Hydrogen Technol. iii. 136 The schlieren method requires a stronger light source than shadowgraphy, but is more sensitive and gives an actual optical image through a lens.

Derivatives

ˈschlieric adj. Geology of the nature of or containing schlieren (sense 2).

ΘΚΠ

the world > the earth > structure of the earth > constituent materials > rock > texture or colour > [adjective] > texture > schliere

schlieric1902

1902 Jrnl. Geol. (Chicago) 10 617 It results..also in irregularly streaked textures, known in German as Schlieren, which may be called schlieric textures.

1921 Geol. Mag. 58 552 On its under side intimate mixtures of silicate magma and carbonate magma were formed, and gave schlieric intrusions of hollaite and kåsenite.

2008 E. W. Sawyer Atlas Migmatites iii. 18/1 Small outcrops of schollen and schlieric migmatites tend to show a parallelism between successive bands of leucosome, schlieren, and raft-rich layers.

This entry has been updated (OED Third Edition, June 2019; most recently modified version published online March 2022).

单词	schliere
释义	schlieren. Brit. /ˈʃlɪərə/, U.S. /ˈʃlɪrə/ Inflections: Plural schlieren. Origin: A borrowing from German. Etymon: German Schliere. Etymology: < German Schliere (feminine) irregular streak, stria (1864 or earlier in physics, 1877 or earlier in geology), inferred singular < Middle High German schlieren, plural of schlier, schliere ulcer (Old High German scliero lump), further etymology unknown.In plural form schlieren after the German plural form. Chiefly in plural. 1. Physics. A zone or layer in a transparent medium or material whose refractive index differs sufficiently from that of the surrounding medium or material to produce a noticeable deviation in the path taken by light passing through it. ΘΚΠ the world > matter > physics > electromagnetic radiation > light > diffraction > [noun] > band, strip fringe1718 schliere1867 isogyre1902 isochromatic1924 Brewster fringes1934 1867 Amer. Jrnl. Sci. 93 390 But if L [sc. the lens] is not perfect, if it contains a flaw, f (i. e., Schliere), then this will refract light differently from the body of the lens. 1946 F. Schneider Qualitative Org. Microanalysis ii. 22 The appearance of schlieren indicates the presence of impurities. 2001 G. S. Settles Schlieren & Shadowgraph Techniques ii. 28 Schlieren may have refractive-index gradients in one, two, or three dimensions. 2. Geology. A linear or flattened mass in igneous rock which is slightly denser than its surroundings, has a diffuse boundary, and has typically been elongated by the flow of magma. ΘΚΠ the world > the earth > structure of the earth > constituent materials > rock > texture or colour > [noun] > texture > schliere schliere1882 1882 Amer. Jrnl. Sci. 124 197 It seemed to me, however, to represent only a slight difference in age and to be probably a case of ‘schlieren’ in the sense of E. Reyer. 1937 Mem. Geol. Soc. Amer. No. 5. 25 Sheet-like bodies, in which certain minerals appear in abnormal proportions, are called flow layers, or schlieren. 2013 Jrnl. Struct. Geol. 51 193/2 Schlieren are important because, in many cases, they record the last physical process to affect the magma. Compounds attributive in plural. With reference to a method of observing and recording schlieren (sense 1) in a transparent medium or material (as in the flow of fluids of differing densities), in which the specimen is illuminated with a collimated beam of light and the diffraction pattern resulting from localized refraction is photographed or displayed on a screen; as schlieren illumination, schlieren method, schlieren photography, etc.The observation of schlieren is of particular use in the study of the flow of fluids of varying density. ΚΠ 1866 London, Edinb., & Dublin Philos. Mag. 4th Ser. 32 115 I imagined that by using the very ingenious arrangement which M. Toeppler has described in his paper, ‘Observations by a New Optical Method,’ under the name Schlierenapparatus, the mist could be still more readily perceived.] 1888 Proc. U.S. Naval Inst. 14 265 We will now quote a few experiments made by Toepler illustrating the sensitiveness of the Schlieren method. 1931 Trans. Inst. Mining Engin. 80 18 Experiments carried out with Schlieren photography at Buxton are being supplemented at the U.S. Bureau of Mines Explosives Station at Pittsburgh. 1956 Nature 10 Mar. 485/1 A schlieren system has been combined with a rotating mirror camera so that the shock propagation can be recorded in the regions outside the arc as well as in the arc channel. 1971 Sci. Amer. May 118/1 In its simplest form the schlieren apparatus consists of a light source, two lenses, a pair of knife-edges and a sheet of photosensitive film. 2006 Sci. News 169 219/1 Then, in the early 1990s, Weinstein figured out ways to make schlieren pictures without mirrors. 2016 T. Hübert et al. Sensors Safety & Process Control Hydrogen Technol. iii. 136 The schlieren method requires a stronger light source than shadowgraphy, but is more sensitive and gives an actual optical image through a lens. Derivatives ˈschlieric adj. Geology of the nature of or containing schlieren (sense 2). ΘΚΠ the world > the earth > structure of the earth > constituent materials > rock > texture or colour > [adjective] > texture > schliere schlieric1902 1902 Jrnl. Geol. (Chicago) 10 617 It results..also in irregularly streaked textures, known in German as Schlieren, which may be called schlieric textures. 1921 Geol. Mag. 58 552 On its under side intimate mixtures of silicate magma and carbonate magma were formed, and gave schlieric intrusions of hollaite and kåsenite. 2008 E. W. Sawyer Atlas Migmatites iii. 18/1 Small outcrops of schollen and schlieric migmatites tend to show a parallelism between successive bands of leucosome, schlieren, and raft-rich layers. This entry has been updated (OED Third Edition, June 2019; most recently modified version published online March 2022). < n.1867
随便看	underaccommodated underachieve underachieved underachievement underachievements underachiever underachievers underachieves underachieving underact underacted underacting underaction underactions underactor underactors underacts underadmiral underadventurer underage underagedness underagency underagent underagents underages