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OC 1, 215. “Nunc autem in dioptricis totus sum...”
Berkel, “Illusies”, 83–84. In the 1660s Huygens would start to seek patronage abroad, first in Florence and then, successfully in Paris.
The most thorough-going account still are the ‘avertissements’ by the editors of the Oeuvres Complètes. Southall, “Some of Huygens’ contributions” reported on Huygens’ dioptrics after the publication of volume 13. Harting, Christiaan Huygens had earlier discussed it briefly. In relationship with his astronomical work and his practical dioptrics, Albert van Helden, “Development” and Anne van Helden/Van Gent, The Huygens collection and “Lens production” discuss some topics. In the context of the history of seventeenth-century geometrical optics — which in its own right has little been studied — Shapiro, “‘Optical Lectures’” mention Huygens’ contributions. They are remarkably absent from the Malet, “Isaac Barrow” and “Kepler and the telescope”. Hashimoto, “Huygens, dioptrics” is the only effort to discuss Huygens’ dioptrics in the context of his broader oeuvre.
OC 13, 1–271. The editors of the Oeuvres Complétes have labeled it Dioptrica, Pars I. Tractatus de refractione et telescopiis. Its content stems from the 1650s. The original version of Tractatus does not exist anymore. A copy was made in Paris by Niquet — probably in 1666 or 1667, at the beginning of Huygens’ stay in Paris — on which the text of the Oeuvres Complètes is based. The editors assume Niquet’s copy of Tractatus is largely identical with the original 1653 manuscript; “Avertissement”, XXX.
OC 1, 305–305.
Descartes, Geometrie, 352 (AT6, 424). “Au reste affin que vous sçachiées que la consideration des lignes courbes icy proposée n’est pas sans usage, & qu’elles ont diverses proprietés, qui ne cedent en rien a celles des sections coniques, ie veux encore adiouster icy lľexplication de certaines Ovales, que vous verrés estres tres utiles pour la Theorie de la Catoptrique, & de la Dioptrique.”
Descartes, Geometrie, 358–359 (AT6, 430–431). The left part 2A2 is a mirror that reflects rays intersecting in G so that they (virtually) intersect in F, provided that it diminishes the ‘tendency’ of the rays to a given degree.
Descartes, Geometrie, 353–354 (AT6, 424–426). The curve satisfies the equation F2 − FA = n(G2 − GA).
OC 1, 305. See note 9: the equation becomes AF = nAG.
Reproduced in OC 14, 419.
In Tractatus, he merely mentioned that a spherical surface is aplanatic for certain points: OC13, 64–67.
OC 1, 190–192.
OC 1, 192.
OC 1, 201–205.
OC 1, 204. “... adeo ut nullius radij concursus cum axe contingat ultra punctum O.”
OC 1, 224–226.
OC1, 215.
OC1, 219–223.
OC13, 16–19
OC13, 40–79.
OC13, 70–73.
OC13, 42–47.
OC13, 88–89. Equivalent to the modern formula 1/f=(n−1)(1/R1+1/R2)
OC13, 98–109.
OC13, 122–125.
OC13, 118–123. In modern terms, L is the optical center.
OC13, 114–119.
OC13, 176n1.
OC13, 174–179.
OC13, 186–197.
“This is the great Proposition asserted by most Dioptrick Writers, but hitherto proved by none (for as much as I know)...” Molyneux, Dioptrica nova, 161.
OC13, 244–247.
OC13, 246–253.
Hug29, 151–167.
OC13, 198–199.
OC13, 252n1. See below, section 3.1.2.
OC13, 258–261.
OC1, 280; 301–303; 321–322. Huygens did not pin much faith in Van Schooten’s proposal.
Van Helden, Invention, 35–36; Galileo, Sidereus nuncius, 3–4 (Van Helden’s introduction).
De Waard, Uitvinding, 105–225; Van Helden, Invention, 20–25.
OC13, 436–437.
Van Helden, Invention, 21, 36.
Van Helden, Invention, 26; Galileo, Sidereus nuncius, 6, 9 (Van Helden’s Introduction).
Van Helden, “Galileo and the telescope”, 153–157.
Galileo, Sidereus nuncius, 94 (Van Helden’s Conclusion).
Galileo, Sidereus nuncius, 37–39.
Kepler, Conversation, [19–21].
Kepler, Dioptrice, dedication (KGW4, 331). “... circaque eam alij de palma primae inventionis certarent, alij de perfectione instrumenti sese jactarent amplius, quod ibi casus potissimum insit, hic Ratio dominetur: GALILAEUS vero super usu patefacto in perquirendis arcanis Astronomicis speciosissimum triumphum ageret; ut cui consilium suppeditaverat industria, nec successum negaverat fortuna: Ego doctus honesta quadam aemulatione novum Mathematicis campum aperui exerendi vim ingenij, hoc est causarum lege geometrica demonstrandarum, quibus tam exoptati, tam jucunda varietate multiplices effectus inniterentur.”
Straker, “Kepler’s theory of pinhole images”, 276–278.
Cited and translated in: Straker, “Kepler’s theory of pinhole images”, 278.
Straker, “Kepler’s theory of pinhole images”, 275–276; 280–282.
Dupré points out Risner’s programmatic discussion of the science of optics in the preface to the edition which constitute an important, yet still little studied, agenda for seventeenth-century optics. Dupré, Galileo, the Telescope, 54.
See Lindberg, “Laying the foundations”, 14–29.
Alhacen, Optics I, 68 (book 1, section 17) and 77 (book 1, section 46).
Dupré, Galileo, the telescope, 31.
Kepler, Paralipomena, 4 (KGW2, 16). “⋯ hae tenebrae sint Astronomorum oculi, hi defectus doctrinae sint abundantia, hi naevi mentes mortalium preciosissimis pictu ris illustrent.” Translation Donahue, Optics, 16.
Kepler, Paralipomena, 201 (KGW2, 181). “Itaque non oportet nos ad restotas respicere, sed ad rerum singular puncta,⋯” Translation Donahue, Optics, 217.
Rosen, “The invention of eyeglasses”, 13–46.
Lindberg, “Optics in 16th century Italy” 136–141. Maurolyco had preceded Kepler in his analysis of the pinhole image: Lindberg, “Optics in 16th century Italy”, 132–135; Lindberg, “Laying the foundations”.
Kepler, Paralipomena, 200–202 (KGW2, 181–183).
Malet, “Kepler and the telescope” offers a detailed discussion of Dioptrice, without however presenting it as a part of the ‘optical part of astronomy’.
Kepler, Dioptrice, dedication (KGW4, 331).
Kepler, Dioptrice, 11 (KGW4, 363).
Kepler, Dioptrice, 12–15 (KGW4, 363–367).
Kepler, Dioptrice, 45–49 (KGW4, 388–393).
Kepler, Dioptrice, 16–18 (KGW4, 367–369).
Kepler, Dioptrice, dedication (KGW4, 335).
Kepler, Dioptrice, 21–24 (KGW4, 371–372).
Kepler, Dioptrice, 35–42 (KGW4, 381–387).
Kepler, Dioptrice, 42–43 (KGW4, 387–388).
A possible source of inspiration may have come from the analogous configuration of the eye and a convex spectacle glass, as the eye acts as a convex lens does. See also Malet, “Kepler and the telescope”, 119–120.
OC1, 6 (Stampioen’s list of recommended readings spans pages 5–10) and OC6, 215.
Della Porta’s account of refraction by spheres and lenses in De refractione is discussed in Lindberg, “Optics in 16th century Italy”, 143–146.
Della Porta, De Telescopio, 113–114.
Della Porta, De telescopio, 141–142.
Compare Lindberg, “Optics in 16th century Italy”, 146–147.
Ronchi, “Refractione au Telescopio”, 56 and 34. “They know nothing of perspective.” and “... and it pleases me that the idea of the telescope in a tube has been mine;...”
Pedersen, “Sagredo’s optical researches”, 144–148.
KGW4, “Nachbericht”, 476.
Dupré, Galileo, the Telescope, chapters 4 to 6 in particular.
Rashed, “Pioneer”, 478–486.
For Snel see: Hentschel, “Brechungsgesetz”. It is possible that Wilhelm Boelmans in Louvain somewhat later discovered the sine law independently. Ziggelaar, “The sine law of refraction”, 250.
Gaukroger, Descartes, 138–146. Dupré, Galileo, the Telescope, 53–54.
Descartes, AT6, 147. “Des moyens de perfectionner la vision. Discours septiesme.”
Descartes, AT6, 155–160.
Descartes, AT6, 165. “Des figures que doivent avoir les corps transparens pour detourner les rayons par refraction en toutes les façons qui servent a la veuë”
Descartes, AT6, 82–83. Ribe, “Cartesian optics” offers an enlightening account of the artisanal roots of La Dioptrique.
Descartes, AT6, 82.
OC10, 402–403. “Mr. des Cartes n’a connu quel seroit ľeffet de ses Lunettes hyperboliques, et en a presumè incomparablement plus qu’il ne devoit. n’entendant pas assez cette Theorie de la dioptrique, ce qui paroit par sa demonstration très mal bastie des Telescopes.”
Stampioen, Wis-konstigh ende reden-maetigh bewys, 58. “... mijn Knecht Ondersoeck sal hem eens een beter Verre-kijcker sonder cirkeltjes daer toe weten te drayen:... Maer niettemin ť geen dese Mathematicien al over 6 Iaren belooft heeft te doen, blijft nog on-vol-daen.”
Stroud, Minute, 20; Prins, “Hobbes on light and vision”, 129–132. On Hobbes’ derivation of the sine law, see section 5.2.1.
Lohne, ”Geschichte des Brechungsgesetzes”, 166.
Barrow, Lectiones, [82–83].
Compare Shapiro, “The Optical Lectures”, 130 & 133–134.
Compare Shapiro, “The Optical Lectures”, 150–151; and Malet, “Isaac Barrow”, 286.
Shapiro, “The Optical Lectures”, 149–150.
Barrow, Lectiones, [168].
Newton, Optical Papers 1, 427.
Halley, “Instance”, 960.
See: Albury, “Halley, Huygens, and Newton”, 455–457.
Galileo, Sidereus nuncius, 112–113 and 92–93 (Van Helden’s conclusion). See Dupré, Galileo and the telescope, 175–178.
Schuster, “Descartes opticien” and Van Berkel, “Descartes’ debt”.
Beeckman, Journal, II, 209–211; 294–296. For lens grinding see down, page 57.
For the second idea see Beeckman, Journal, II, 367–368. For a later consideration see for example: III, 296.
Beeckman, Journal, II, 296; 357.
Beeckman, Journal, III, 109–110.
Van Helden, Measure, 118–119.
Compare Dear, Discipline and Experience, 210–216.
Van Helden, “Astronomical telescope”, 26–32. See also below section 3.1.1.
Rigaud, Correspondence, 46: “This is that admirable secret, which, as all other things, appeared when it pleased the All Disposer, at whose direction a spider’s line drawn in an opened case could first give me by its perfect apparition, when I was with two convexes trying experiments about the sun, the unexpected knowledge.”
McKeon, “Les débuts I”, 258–266.
Old Corr 3, 293: “... prendre les diametres du soleil, de la lune et des planetes par une methode que nous avons, Monsieur Picard et moy, que ie croy la meilleure de toutes celles que ľon a pratiquer Jusques a present,...”
McKeon, “Les débuts I”, 266–269.
McKeon, “Les débuts I”, 286. In Micrographia (1665) Hooke had suggested that a scale may be inserted into the focal plane of telescopes. Hooke, Micrographia, 237.
OC21, 348–351.
Van Helden, Measure, 120–121.
OC21, 352–353.
McKeon, “Les débuts I”, 286; Van Helden, Measure, 118.
McKeon, “Renouvellement”, 122.
McKeon, “Renouvellement”, 126.
Flamsteed, Gresham lectures, 34–39 (Forbes’s introduction).
Old Corr 9, 326–327.
Old Corr 10, 520.
Old Corr 4, 448.
Van Helden, “Huygens and the astronomers”, 156-157; Van Helden, Measure, 127–129.
Flamsteed, Gresham lectures, 154.
Flamsteed, Gresham lectures, 119 & 132. Flamsteed later deleted the part between brackets.
Flamsteed, Gresham lectures, 120–127.
Flamsteed, Gresham lectures, 136.
Flamsteed, Gresham lectures, 140–143.
Flamsteed, Gresham lectures, 40; 146n2 (Forbes’ introduction).
Flamsteed, Gresham lectures, 8–9; 40 (Forbes’ introduction).
Flamsteed, Gresham lectures, 39 (Forbes’ introduction).
Flamsteed, Gresham lectures, 149.
Flamsteed, Gresham lectures, 4–5 (Forbes’ introduction).
Molyneux, Dioptrica nova, (Admonition to the reader).
Molyneux mentioned Kepler, Cavalieri, Hérigone, Dechales, Fabri, Gregory and Barrow.
Molyneux, Dioptrica nova, (Admonition to the reader).
Molyneux, Dioptrica nova, 19–23.
Molyneux, Dioptrica nova, 20.
Molyneux, Dioptrica nova, 22.
Molyneux, Dioptrica nova, 9.
Molyneux, Dioptrica nova, 24. From the preceding it will be clear, that following Molyneux’s line of thought this distance should be zero, for both points are by definition the same.
Molyneux, Dioptrica nova, 36–38.
Molyneux, Dioptrica nova, 38.
Picolet, “Correspondence”, 38–39.
«... peuuent aussi estre sujets a certaines refractions qu’il faut bien connoistre.” Quoted in McKeon, “Renouvellement”, 126–128. It is found in: A. Ac. Sc., Registres, t. 3, fol 156 ro — 164 vo spéc. 157 vo.
Blay, “Travaux de Picard”, 329–332. Blay cites several references.
Blay, “Travaux de Picard” 343. “Ce que nous venons ďexpliquer touchant la construction des lunettes ďapproche, n’est que par rapport α ľusage que ľon en fait dans les instruments qui servent α ľobserver,...”
Divers Ouvrages de Mathematique et de Physique, par Messieurs de ľAcademie Royale des Sciences (1693), 375–412.
OC13, “Avertissement”, 7.
Blay, “Travaux de Picard”, 340.
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(2005). Chapter 2 1653 — ‘Tractatus’. In: Lenses and Waves. Archimedes, vol 9. Springer, Dordrecht. https://doi.org/10.1007/1-4020-2698-8_2
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