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Les Raisons Des Forces Movvantes: 1 (1615)

Caus, Salomon, Salomon, Caus · Norton · leaf 62

An illustration from Les Raisons Des Forces Movvantes: 1, 1615, leaf 62 — s de la tarelle autrement elle ſeroit en danger de rompre , & faudra continuer touſiours de retirer ladite piece , quand elle aura percẽ trois ou qua due pouces , pour vuider touſiours ledit bois , iuſques à ce que le trou ſoit outre , & a pres ſi Pon veut ledit trou plus grand , bon prend 8 brenda…

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$An illustration from Perspectiva horaria sive de horographia gnomonica tum theoretica, tum practica libri quatuor : in quibus gnomonices antiqui fines latius protenduntur: traditurque ratio, & delineatio geometrica expeditissima non solum communium, quae radio directo vel umbra pariter directa; sed etiam aliorum novae inventionis solarium horariorum, quae radio vel umbra tum reflexis tum refractis horas, aliaque ad coelestium motuum notitiam pertinentia indicant : in his vero praecipuam admirationem habet thaumantias catoptrica atque dioptrica, id est reflexus, ac refractusa speculo cylindrico solaris radius, omnes, qui in sphaera cogitari possunt, circulos gnomonice reddens iridis modo ac specie : lux quoque secundum propriam naturam sumpta suas ibi habet partes, ubi e principiis eius physicis ratio redditur reflexionum, ac refractionum eiusdem consequitur vero methodus certissima telescopium efficiendi non modo sphaericum sed etiam hyperbolicum atque ellipticum (1648)$