Observations of sun
Date
25 November 1673
Creator
John Flamsteed (1646 - 1719, British) , Astronomer
Object type
Archive reference number
Manuscript page number
f2 p2r
Material
Dimensions
height (page): 312mm
width (page): 198mm
width (page): 198mm
Subject
Content object
Description
Figure of the Sun for measuring contractions of its diameter as a result of refraction of the air. In his letter to Richard Towneley dated 25 November 1673, John Flamsteed relayed his measurement of the diameter of the sun in order to corroborate Jean Dominique Cassini's theory of refraction in Specimen observationum Bononiensum (Bologna, 1656).
Related fellows
John Flamsteed (1646 - 1719, British) , Astronomer
Jean Dominique Cassini (1625 - 1712, Italian) , Astronomer, Astronomer
Jean Dominique Cassini (1625 - 1712, Italian) , Astronomer, Astronomer
Associated place