Showing Records: 11 - 20 of 318
About the procession of the Equinoxe and its time, 1696-1700
On the reckoning of time, and how the equinox moves.
Ad Cartesis Specia ... sectionibus Coni, 1680
Notes on Cartesian cone sections, written out during Gregory's stay in Rotterdam.
The item going before, also labelled 134, may actually be 133 (or part of it), which was supposed to have been a treatment by James Gregory on hyperbolae, nautical spirals, and other things. It treats of a hyperbola, at least. Its hand is not David's, but neither is it the hand of item C 136, in James' familiar hand.
Ad Geometriam Indivisibilium, 1680's
Theorems attributed to one 'Cavillarius', possibly Francesco Bonaventura Cavalieri (1598-1647), Jesuit mathematician from Bologna.
Ad Jo: De Witt Elem: Curvarum, 1680
A demonstratio on one of de Witt's notes on Schooten's 1659 Latin edition of Descartes' Geometria. Unrelated jottings on reverse are in a hand other than Gregory's.
Ad Pag. 23. Geom: Cartes: Notula, 1680
A difficulty in Descartes, probably written up in Rotterdam.
Ad pag: 221. Newtoni Nota, May 1694
Gregory's attempt to work out corollary 2 to Newton's proposition 91, from book 1 of the Principia, which compared the ratio of the attraction of a sphere to that of a spheroid, using the integration of the square root of a trinomial.
Ad Philosophiam Neutoni Nota, 15 September 1693
For Gregory's Nota to Newton's Principia. One of several attempts (see C46, C60, and C63) to understand Newton's corollary 2 to proposition 91, book 1, which discovered the ratio of the attraction of a shpere to that of a spheroid, and involved the integration of the square root of a trinomial.
Adnotata et contenta quaedam in Actis Lipsicis, 1692
A record of interesting articles in the Acta between about 1681 and 1692.
Adnotata ... ex Newtone, May 1694
Notes of some of the consultations with Newton in Cambridge from the 4th to the 8th of May, 1694. The topics of those talks included astronomy, mechanics, physics and mathematics. The mathematical topics included conic radii, conjugates of curves, the polar coordinates of an orbit, and the form of the solid of least resistance.
Adnotata Phys: a D. Boyleo 1691 et ab Fatio, 1691
Notes on conversations with Boyle and Fatio, including the former's notions on the quantity of motion in bodies rotated about their own axis, and the latter's theory of gravity.