Diagram
Date
17th century
Object type
Archive reference number
Manuscript page number
p316
Material
Dimensions
height (page): 322mm
width (page): 200mm
width (page): 200mm
Subject
Content object
Description
Figure in letter from Jean Dominique Cassini, dated at Paris, to Henry Oldenburg. It accompanies a description of Cassini's method (in English) for observing the altitude of the Sun using the meridian line inscribed on the floor of the St Petronio Church in Bologna. Similar examples of meridian lines may be found in Florence and elsewhere (see Heilbron, The Sun in the Church (1999)).
This figure is copied from EL/C1/51/003.
This figure is copied from EL/C1/51/003.
Related fellows
Jean Dominique Cassini (1625 - 1712, Italian) , Astronomer, Astronomer
Henry Oldenburg (1612 - 1677, German) , Scientific correspondent
Henry Oldenburg (1612 - 1677, German) , Scientific correspondent
Associated place