Record

RefNoMS/603/8/118
Previous numbers1455
LevelItem
TitleLetter from H F [Hugh Frank] Newall, Madingley Rise, Cambridge, to [Joseph] Larmor
CreatorNewall; Hugh Frank (1857-1944) British astrophysicist and educational benefactor
RecipientLarmor; Sir Joseph (1857-1942); Irish theoretical physicist
Date4 March 1896
DescriptionThanking Larmor for his thoughts, but Newall should have stated his problem explicitly: 'atmospheric disturbance causes the star image to jump off the slit of a spectroscope placed at the eye end of a refractor'. He discusses the linear movement of the image, proportional to the focal length, and the width of the slit. It becomes a question of whether increased light collection by the aperture is neutralised by increased amplitude of the star image across the slit. He gives equations for this and discusses the difficulty at length.
Extent4p.
FormatManuscript
PhysicalDescriptionInk on paper
AccessStatusOpen
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