请输入您要查询的英文单词:

 

单词 canal rays
释义

> as lemmas

canal rays
canal rays n. [after German Kanalstrahlen, plural noun (E. Goldstein 1886, in Berliner Berichte 39 691); so called on account of the openings in the cathode through which the ions pass (compare quot. 1957)] Physics (now historical) streams of positive ions which are produced in a high-vacuum discharge tube and move towards the cathode, some of them passing through openings in it (cf. positive rays n. at positive adj. and n. Compounds).Also (chiefly in attributive use) in singular.
ΘΚΠ
the world > matter > physics > atomic nucleus > radioactivity > ionizing radiation > [noun] > rays penetrating cathode
canal rays1897
1897 Jrnl. Physical Chem. 1 752 A number of substances were subjected to the action of: 1, Cathode rays; 2, Röntgen rays; 3, Becquerel's rays; 4, Goldstein's (canal rays); 5, Hertz (discharge) rays.
1904 E. Rutherford in Technics July 12/2 The rays from radium are very similar to those produced when a strong electric discharge is sent through a vacuum tube... The α rays are very analogous to the ‘canal’ rays discovered by Goldstein.
1916 Sci. Abstr. A. 19 154 The inhomogeneity of the field in the canal-ray tube.
1957 Encycl. Brit. XVIII. 882 c/1 Goldstein first observed..streams of luminous gas back of a perforated cathode..as if..ionizing particles were coming through the holes..and ionizing the gas... These radiations..were first called kanalstrahlen, or canal rays.
2004 B. Bunch & A. Hellemans Hist. Sci. & Technol. 422/1 Later canal rays will be found to consist of ions that have had electrons stripped in producing the cathode ray.
extracted from canaln.
<
as lemmas
随便看

 

英语词典包含1132095条英英释义在线翻译词条,基本涵盖了全部常用单词的英英翻译及用法,是英语学习的有利工具。

 

Copyright © 2004-2022 Newdu.com All Rights Reserved
更新时间:2024/9/21 10:58:48