magneto-comb. form

1846 J. Joyce Sci. Dialogues vi. 423 The machine in this case has been termed the magneto-electro-telluric machine.

1903 Electr. World & Engineer 29 Aug. 340/1 From a magnetic standpoint, ferrotype leaves something to be desired, and from a magneto-acoustic one the writer has often wondered why a spun diaphragm that was thick in the center..and thin around the circumference..has never been advocated.

1964 M. A. Uman Introd. Plasma Physics xiii. 157 A hydromagnetic wave whose time-varying magnetic field is parallel to the uniform static magnetic field is often called a magnetoacoustic wave.

1992 S. P. Maran Astron. & Astrophysics Encycl. 330/2 The magnetoacoustic wave is a compressive disturbance that moves at the magnetoacoustic speed in the direction perpendicular to the magnetic field.

1968 Ann. Rev. Astron. & Astrophysics 6 321 This article is concerned with the radio spectra of sources..whose radio emission is generally attributed to synchrotron radiation (magnetobremsstrahlung).

1980 Nature 20 Mar. 247/1 A substantial fraction of its rotational energy losses is thought to be converted into magnetobremsstrahlung of the Crab nebula.

1992 S. P. Maran Astron. & Astrophysics Encycl. 598/1 Magnetobremsstrahlung (magnetic braking radiation), the incoherent emission of electrons spiraling in a magnetic field, is the most prevalent emission mechanism in cosmic radio sources.

1921 Sci. Abstr. A. 24 724 (heading) Magneto~caloric effect.

1937 J. W. T. Spinks tr. G. Herzberg Atomic Spectra vi. 211 The magnetocaloric effect [in paramagnetic substances] is so small at room temperature that it cannot be observed.

1965 A. H. Morrish Physical Princ. Magn. iii. 83 Since for a normal paramagnetic salt (∂M/∂T)_H is negative, an increase in the field produces a heating and conversely decreasing H gives rise to a temperature drop. This is often called the magnetocaloric effect. The important application of this effect is in the production of temperatures below 1°K.

1989 Sci. Amer. Feb. 49/1 This magnetocaloric effect can be exploited in a heat pump.

1848 M. Faraday in Philos. Trans. (Royal Soc.) 139 30 In that case the word magnetocrystallic ought probably to be applied to this force, as it is generated or developed under the influence of the magnet.

1848 M. Faraday in Philos. Trans. (Royal Soc.) 139 40 Both the magnetic and magneto~crystallic forces are at the same time doubled or quadrupled.

1950 Rep. Progress Physics 13 85 A..quantitative interpretation has..been developed of..single crystals..treating the magneto-crystalline anistropy coefficients as parameters.

1966 Trans. Amer. Geophysical Union 47 70/2 These metals have K=O points that permit the separation of magnetoelastic effects from magnetocrystalline effects.

1997 Science (Nexis) 11 July 213 Understanding of the magnetocrystalline anisotropy in magnetic materials (the influence of different elemental components on the direction of easy magnetization) can be greatly enhanced by measuring the orbital moment anisotropy of the elemental constituents.

1884 S. P. Thompson Dynamo-electr. Machinery 199 In magneto-dynamos, in which the field is due to permanent magnets of steel.

1869 Chambers's Jrnl. Apr. 271/2 A magneto-exploder..was shewn, which will fire a fuse, and consequently a cannon.

1908 Installation News 2 149/2 Water-tight bells and magneto exploders for blasting purposes.

1883 Jrnl. Soc. Telegraph-engineers & Electricians 12 310 A coiled magneto-machine.., in which we have a magneto-generator acting as a brake.

1907 J. H. Adams Harper's Electr. Bk. for Boys 392/1 Magneto-generator, a current generator composed of a permanent magnet and a revolving armature.

1966 McGraw-Hill Encycl. Sci. & Technol. (rev. ed.) VIII. 52/2 Hand-operated magneto generators were once widely used for signalling from local battery telephone sets.

1890 Cent. Dict. Magneto-instrument, same as magneto.

1925 Appleton & Barnett in Electrician 3 Apr. 398/1 The same theory (for which we propose the name magneto-ionic theory) has also been independently put forward by Messrs. Nicholls and Schelling (‘Nature’, March 7th, 1925).

1932 E. V. Appleton in Jrnl. Inst. Electr. Engineers 71 645/2 It is highly probable that interference between the various magneto-ionic components of singly- and multiply-reflected downcoming waves is partly responsible for resultant intensity fading.

1992 S. P. Maran Astron. & Astrophysics Encycl. 7/2 In almost every case, one of the radio lobes is depolarized by passage through a magnetoionic medium.

c1865 G. Gore in J. Wylde Circle of Sci. I. 229/1 The magneto-machine being in some cases employed.

1891 S. P. Thompson tr. Guillemin Magn. & Electr. 415 Gramme's magneto-machine.

1903 Motor Ann. 221 The actual current from the battery, or magneto machine, is interrupted inside the cylinder, thus causing a spark.

1938 A. E. Clayton Performance & Design Direct Current Machines (ed. 2) iv. 84 Consider..the 2-slot or shuttle armature as used in magneto machines.

1925 Sci. Abstr. A. 28 611 Magneto-mechanical anomaly of the atom.

1930 S. J. Barnett Evid. on Elem. Magnet from Res. on Gyromagn. Phenomena 12 The gyromagnetic ratio, or magneto~mechanical ratio.

1950 W. Finkelnburg Atomic Physics iii. 153 The magnetic moment of paramagnetic atoms is due to the electron rotating in its orbit or to the spin of the electron. The so-called magnetomechanical parallelism enables us to distinguish between these two contributions to the atomic magnetism.

1953 C. Kittel Introd. Solid State Physics x. 165 The magnetomechanical ratio is defined as the ratio of the magnetic moment to the angular momentum.

1958 E. U. Condon & H. Odishaw Handbk. Physics iv. viii. 136/1 Because of the magnetomechanical interactions.., internal stresses due to cold-working, impurities, precipitates, etc., contribute a spatially varying component of the short-range energy.

1986 Nature 10 July 123/2 The nature of the electromechanical and magnetomechanical coupling [in the earth].

1902 Trans. Amer. Inst. Electr. Engineers 1901 18 47 The telephonograph, or, as it is sometimes called..the ‘magnetophonograph’, is the invention of a Danish electrical engineer, Mr. Waldemar Poulsen.

1902 Harper's Mag. Feb. 496 It has been variously designated as the ‘telegraphone’, the ‘microphonograph’ and the ‘magneto-phonograph’ in Europe.

1890 Cent. Dict. Magneto-pointer.

1883 T. D. Lockwood Electr., Magn., & Electr. Telegr. vi. 62 In our own country the magneto-printers of G. L. Anders are well and favorably known.

1934 A. C. G. Mitchell & M. W. Zemansky Resonance Radiation & Excited Atoms iii. 134 The first exact measurements of p by the method of magneto-rotation were made by Ladenburg and Minkowski, who measured the magneto-rotation at the edges of the sodium D lines at various vapour pressures.

1993 Physical Rev. A. 47 1220/1 The signature of this nonlinear Faraday effect (NLFE) is a pronounced, dispersively shaped resonance in the B-field dependence of the magnetorotation angle.

1890 Cent. Dict. Magneto-telegraph.

1955 Mil. Affairs 19 205/2 Among the communications equipment there are a Beardslee magneto telegraph of the Civil War period; [etc.].

1878 Nature 7 Nov. 12/1 In the preceding article [where it was called the ‘magneto-electric telephone’] we traced the history and development of the magneto-telephone.

1879 C. Ader U.S. Patent 222,118 1/1 This invention relates more particularly to what may be called ‘magneto-telephones’, in contradistinction to carbon, water, and other telephones requiring the aid of a battery for operation. In this class of telephones the transmission and reproduction of speech depend upon the vibrations of an inductive armature in front of magnetic poles surrounded by bobbins, the vibrations of the armature inducing or responding to currents in the coils of the bobbins.

1883 S. P. Thompson P. Reis 9 In 1877, when the Magneto-Telephones of Graham Bell began to make their way into Europe.

1989 Daily Tel. 31 Oct. 21/5 Progress marches on in the Falklands, at the expense of one of the world's last remaining magneto telephone systems.

1889 New Sydenham Soc. Lexicon Magneto-therapy, see Metallotherapy.

1974 Biomed. Engin. (N.Y.) 7 291 (heading) ‘Polyus-1’ apparatus for low-frequency magnetotherapy.

1990 New Eng. Monthly Mar. 61/1 Magnetotherapy is a post-acupuncture treatment.

1890 Cent. Dict. Magneto-transmitter.

1966 Smithsonian Jrnl. Hist. 1 15 Bell apparently abandoned the variable-resistance transmitter in favor of the magneto transmitter.