Showing Records: 1 - 4 of 4
Observ: Eclipsos Lunaris Oxon 19 Octr 1697 et [Mercury] in [the Sun] 24 Oct 1697, October 1697, with 2 apparently attached documents from 17041693
Item
Identifier: Coll-33/Quarto A [28]
Scope and Contents
Two straightforward records of planetary eclipses, but meant, on palaeographic evidence, to be kept with a draft and a fair copy of a subsequent Philosophical Transactions of the Royal Society article [Vol. XXIV, No. 293, for September-October 1704, p1704] about the Cassini curve, a model of how a periodic comet probably orbits. Folding and fading of these documents suggest that they were inserted not long after David Gregory generated his index of Quarto A (which he drew up around 1700)....
Dates:
October 1697, with 2 apparently attached documents from 17041693
Observata et Dicta ... cum Huygeno Junio 1693, 30 June 1693
Item
Identifier: Coll-33/Quarto A [14]
Scope and Contents
Remarks en passant about library volumes in history and physics seen in Leiden. A longer passage follows: notes to a conversation with Christiaan Huygens, critiquing Sir Isaac Newton's notions of absolute motion and the propagation of light. Huygens also says that John Flamsteed ought to declare for the absolute speed of light, and that this should persuade Jean Dominique Cassini.
Dates:
30 June 1693
On Cassini's orbit, 10 September 1704
Item
Identifier: Coll-33/Folio E [050]
Scope and Contents
A draft, on the eve of the publication of the Astronomiae, of a discussion in proposition 8 of Cassini's orbit, an apparent compromise between the true and approximate systems.
Dates:
10 September 1704
Quarto A, c1680-c1708
Series — Box Dk.1.2: Series Coll-33/Quarto A; Series Coll-33/Folio B; Series Coll-33/Folio D; Series Coll-33/Folio E
Identifier: Coll-33/Quarto A
Scope and Contents
The papers of David Gregory in Quarto A consist of:
107 manuscript papers and an index, relating to: theoretical physics, including optics, especially treatises on refraction and colour, on mechanics, specifically on velocity, gravitation, centrifugal and centripetal force, and the movement of solids through fluid, and an occasional thought on magnetic attraction. Applied physics, considering ships,...
Dates:
c1680-c1708