Lectiones opticæ & geometricæ : in quibus phænomenon opticorum genuinæ rationes investigantur, ac exponuntur: et generalia curvarum linearum symptomata declarantur (1674)
Barrow, Isaac, 1630-1677, Newton, Isaac, Sir, 1642-1727, ed, Collins, John, 1625-1683, ed, Adams, John, 1735-1826, former owner. BRL, Boston Public Library (John Adams Library) BRL · Londini : Typis G. Godbid, & prostant venales apud Robertum Scott ... · leaf 48
dvis curvas punctum N a focis ducantur rectae H N, K N j fatis celebre efl, quodperpendicularis C N angulum H N K bifecabit. Unde N H . N K ::HC.CK.&comp0nendoNH + NK.NK::HK CK.veliiD.NK::HK.CK. vel permutando HD. H K::NK CK. quareii talis^fuerit ellipfis, ut fit B D . H K:: I. R . etiara erit… … • E cC Optpa^ ay L E C T I 11. 2^ g. Non abfimiliter in Hyperhola^ (cujus itidem axis B D, foci H, K; ;^reliquifque velut antea prsfparatis) oftendetur fore perpetuo N K . C.K:: B D. H K . unde {\ fuerit (ex Hjpsrbo!^ conftructione)- B D. Fig. 2 7,aK::I.R. eri£etiamNK.CK::I.R. quod fi radius MN adC…
Mathematics · Geometry · Geometrical optics
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