Record

RefNoMS/603/4/81
Previous numbers669
LevelItem
TitleLetter from George E [Ellery] Hale, Carnegie Institution of Washington, Mount Wilson Solar Observatory, Pasadena, California, to Sir Joseph Larmor, St. John's College, Cambridge, England
CreatorHall; George Ellery (1868-1938); American astronomer and solar physicist
RecipientLarmor; Sir Joseph (1857-1942); Irish theoretical physicist
Date19 January 1916
DescriptionHe sent Larmor a stereogram on glass a few weeks ago, showing hydrogen flocculi surrounding a group of sunspots on 7 Augusy 1915. He should have added the following memorandum regarding the stereoscopic effect. It is easily shown that the angular value of separation of the images necessary for stereo vision is exceeded by the displacement due to solar rotation between the exposures. In all three forms of spurious effects are present, which he lists and explains. As a check on the reality of the stereoscopic effect, photographs have been made of a globe with roughened surface, turned, and enlarged by magnification, all corresponding to the solar photographs.
Extent2p.
FormatTypescript
PhysicalDescriptionInk on paper
AccessStatusOpen
Fellows associated with this archive
CodePersonNameDates
NA7364Hale; George Ellery (1868 - 1938)1868 - 1938
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