magnetogyric, a. Physics.
(mægˌniːtəʊˈdʒaɪərɪk)
[f. magneto- + Gr. γῦρ-ος ring, circle + -ic.]
1. Pertaining to or exhibiting the Faraday effect (Faraday 1).
| 1904 A. Schuster Introd. Theory Optics xii. 272 All substances turn the plane of polarization when they are traversed by light in the direction of a magnetic field. They become therefore ‘magneto-gyric’. Ibid. 290 A simple and rational connexion between the Zeeman effect and magneto-gyric properties. |
2. Applied to the ratio of the magnetic moment of an atom or particle to its angular momentum.
| 1965 M. G. Scroggie Electron in Electronics ix. 204, γs, the magnetogyric ratio for spin, is different from the orbital γ, being practically twice as large. 1967 Condon & Odishaw Handbk. Physics (ed. 2) viii. ix. 113/1 The term gN(e/2Mc) is often replaced by γ, the magnetogyric ratio; hence, µ= γħI. 1972 Science 27 Oct. 364/1 As long as H1 is applied, M precesses..at a frequency given by the Larmor relation ωR= γH1 (in radians per second) where γ is the magnetogyric ratio of the nucleus. 1974 McGraw-Hill Yearbk. Sci. & Technol. 314/2 Compared to H1, the C13 nuclei are much weaker magnets. The magnet strength (magnetogyric ratio γ) is only about 1/4 that of protons. |