请输入您要查询的百科知识:

 

词条 Evershed, John
释义
Evershed, John
British astronomer
born Feb. 26, 1864, Gomshall, Surrey, Eng.
died Nov. 17, 1956, Ewhurst, Surrey
English astronomer who, in 1909, discovered the horizontal motion of gases outward from the centres of sunspots, a phenomenon sometimes called the Evershed effect.
In 1906 Evershed became assistant director of the Kodaikānal and Madras observatories in India, later becoming director. On an expedition to Kashmir in 1915, he made the first measurements supporting Albert Einstein's prediction that the wavelength of light emitted by a massive body (in this case the Sun) should be increased by an amount proportional to the intensity of the local gravitational field. Evershed retired in 1923, returning to England; in 1925 he built his own solar observatory at Ewhurst. He went on six expeditions to observe total solar eclipses from Norway (1896), India (1898), Algeria (1900), Spain (1905), Australia (1922), and Yorkshire (1927).
随便看

 

百科全书收录100133条中英文百科知识,基本涵盖了大多数领域的百科知识,是一部内容开放、自由的电子版百科全书。

 

Copyright © 2004-2023 Newdu.com All Rights Reserved
更新时间:2025/4/10 14:12:59