Astronomy
Found in 35 Collections and/or Records:
A Jacobo Cassini quaerendum, 1698
Things Gregory wished to discuss with Jacques Cassini, son of Jean Dominique, deviser of the famous curve, in his upcoming trip to England in 1698.
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.
Astronomiae manuscript, 3 June 1702
Part of the package shipped off to the printer.
Astronomiae Physicae et Geometricae Elementa, 28 February 1698
Notes from a London meeting with Sir Isaac Newton on a revised plan for the Astronomiae physicae et geometricae elementa, (1702), Gregory's most important work. An erratum lies at the foot of this document, unrelated to it or to any of the other things on the sheet (which have their own entries in Gregory's index): a jotting about refraction, crystals, and cataracts of the eye. This is dated London, 30 May 1708.
Catalogus librorum non videram 1692, 1692
Ersatz title is "Memorandum to Dr Gray to pick up as he finds opportunity these books". They are partial titles, numbering about a dozen, covering subjects as divers as optics, astronomy, and gardening.
Celestial observations, 6 May 1696
Tabulations of an evening's heavenly observation. The movement of something in the constellation of Leo appears to be the subject.
Corrigenda to the Astronomiae, 1698-1699
Editorial issues in Gregory's major textbook.
De affirmanda parallaxi magni orbis, cogitatum Hugenii, June 1693
A transcription of Christiaan Huygen's argument that because stars' observed radii are so insensibly small, the diameter of the earth's orbit relative to the stars' position is also insensible, and thus the parallax measurement, which ought to prove or disprove the Copernican layout of the heavens, is useless.
De Heliaco orta Sirii anno ante Christum 2783, a.D. Wills..., 1696
This paper, says Gregory himself, is for a Doctor Wills at Oxford, who undertakes to give a solstice long before that adduced by Hyparchus.