| 单词 |
plasmoid |
| 释义 |
plasmoid Physics and Astr.|ˈplæzmɔɪd|
[f. plasma + -oid.]
A coherent mass of plasma (plasma 6).
1956W. H. Bostick in Physical Rev. CIV. 292/1 The plasma is emitted not as an amorphous blob, but in the form of a torus... We shall take the liberty of calling this toroidal structure a plasmoid, a word which means plasma-magnetic entity. The word plasmoid will be employed as a generic term for all plasma-magnetic entities. [Note] The term ‘plasmon’ (in line with the term ‘geon’ used by Wheeler) was originally proposed. However, David Pines (of Princeton University) has pointed out that the term ‘plasmon’ should be reserved for a quantum of plasma-oscillation energy. He kindly proposes the term ‘plasmoid’, which we adopt. 1962Riley & Sailor Space Systems Engin. v. 129 Techniques have been developed..whereby doughnut-shaped ‘blobs’ of plasma or plasmoids can be projected by magnetic forces at speeds exceeding 107 cm/sec. 1971S. Singer Nature of Ball Lightning viii. 119 Spherical plasmoids of relatively small dimensions, such as those reported for ball lightning or involved in experimental work, have presented greater difficulty for theoretical analysis. 1976Nature 12 Feb. 451/1 As the galaxy ploughs through a dense intracluster gas at supersonic speed, it is envisaged to eject pairs of plasmoids in opposite directions, as commonly assumed for ‘normal’ double radio galaxies. |
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