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Title: Recollections of seventy years of scientific work
Authors: Evershed, John
Keywords: Solar Physics
Spectroheliograph
Seventy Years of Scientific Work
Sun-spots
Spectra
Issue Date: 1955
Publisher: Elsevier
Citation: Vistas in Astronomy, Vol. 1, No. 1, pp. 33 - 40
Abstract: This article records some of the researches in solar physics undertaken during my life. These have included the following: prominence observations covering sixteen years; spectroheliograph work with a direct vision prism; experiments on the radiation of heated gases; eclipse expeditions in 1898 and 1900; studies of the relation between emission and absorption spectra, and of the continuous spectrum of hydrogen. In India (1906–1923) my work included: the discovery of radial motion and the estimate of pressure in sunspots; a study of the exceptional observing conditions in Kashmir; measurements of the red-shift in connection with Einstein's prediction; great magnetic storms during flares; the motion in the tail of Halley's comet and its transit over the Sun; observations of novae. At Ewhurst (1923–1954) I was concerned with: high-dispersion work with liquid prisms; the study of the Zeeman effect and the discovery of a particularly sensitive line for its determination; measurements of minute line-shifts due to horizontal motions; and the decrease of wavelength of solar lines. Reference is made to scientific men I have met and to whom I am indebted for interest and encouragement.
Description: Restricted Access
URI: http://hdl.handle.net/2248/4036
Alternative Location: http://dx.doi.org/10.1016/0083-6656(55)90009-X
Copyright: Elsevier
Appears in Collections:John Evershed (1911 - 1923)

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