Sphere
Subject
Subject Source: Library of Congress Subject Headings
Scope Note: Created For = NAHSTE
Found in 4 Collections and/or Records:
De gyratione Globorum de collisione mutua Probl: Halleianum 3, c January 1695
Item
Identifier: Coll-33/Quarto A [7]
Scope and Contents
Treatment of Sir Edmond Halley's method of finding the rotary motions produced in two spheres by an oblique impact. Appears to have been written in a hand other than David Gregory's, [Halley's?] though the title is clearly in his.
Dates:
c January 1695
Memoranda et observata in Batavia 1693 Maio, 17 May 1693
Item
Identifier: Coll-33/Quarto A [31]
Scope and Contents
Batavia is a seventeenth-century cognomen for the Netherlands, to which David Gregory went in the spring of 1693, mostly to talk science with Christiaan Huygens. This document is a list of some books he wished to buy for himself and for friends back home, if he could find them. They covered Palladius, Thucydides, Dionysius of Halicarnassus, Erasmus, "all I can find of the Roman Authors at Amst[erdam]", and others. On the reverse is a list of topics he wished to discuss when he finally sat...
Dates:
17 May 1693
Scheda D.G. de rotatione globi de percussione orta, 12 February 1695
Item
Identifier: Coll-33/Quarto A [25]
Scope and Contents
David Gregory's solution to Sir Edmund Halley's problem, proposed during Gregory's composition of the "Tract on Fluxions", of finding the rotary motion in a sphere struck by another sphere. (Halley's solution is in Coll-33/Quarto A [7].) It is built on some basic lemmas and includes a reference (possibly after the date given) to proposition 40 of the "Tract on Fluxions".
Dates:
12 February 1695
Tractata cum Hugenio - Hage Com. Maio 1693 (from index), 16 May 1693-18 May 1693
Item
Identifier: Coll-33/Quarto A [8]
Scope and Contents
Conversation notes pertaining to a meeting with Christiaan Huygens in the Netherlands. Entry for 16 May 1693, following a jotted chapter citation (see note) and a squib about the glass used in microscopes, is an agenda for the discussion topics, which are to include foliate curves, Huygens' dioptrics (laws of refraction), compound 'astroscopes', gravitational theory of (his Oxford colleague from Switzerland,) Fatio de Duillier, a celestial-motion machine, a new pendulum for Huygens'...
Dates:
16 May 1693-18 May 1693