Clavius, Christoph
,
Gnomonices libri octo, in quibus non solum horologiorum solariu[m], sed aliarum quo[quam] rerum, quae ex gnomonis umbra cognosci possunt, descriptiones geometricè demonstrantur
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GNOMONICES
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">PARALLELOS, ſeu arcus ſignorum Zodiaci, in eodem horo-
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logio ad Horizontem inclinato ponere.</
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<
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xml:space
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">HABITA ratione altitudinis poli inuentæ ſupra planum inclinatum, deſcribentur paralle
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xml:space
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cuum ſigno-
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rum in eodem
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horologio ad
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Horizõtem in-
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clinato.</
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li ſignorum in hoc horologio, quemadmodum in horizontali, vt propoſ. </
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<
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<
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tradidimus & </
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<
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<
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<
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<
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">qui ad auſtralia pertineant, pulchrè quatuor illa Ana-
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<
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">Qui arcus@ ad
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ſigna borealia,
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& qui ad au-
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ſtralia perti-
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neant.</
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lemmata in propoſ. </
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<
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">antecedenti declarant. </
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<
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xml:space
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">Quoniam enim in primo Analemmate puncta qua-
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drantis Borealis F H, (appellamus nunc ſemicirculum borealem Meridiani H F I, & </
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249
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xlink:href
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http://echo.mpiwg-berlin.mpg.de/zogilib?fn=/permanent/library/xxxxxxxx/figures/0374-01
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H G I) proiiciunt vmbram in meridie per centrum E, in portionem meridianæ lineæ M N, ſupe-
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rioris horologij poſitam inter centrum, & </
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<
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">puncta verò quadrantis auſtra-
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lis G I, vmbram proiiciunt per centrum E, in portionem lineæ meridianæ O P, poſitam inter
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<
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centrum, & </
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<
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<
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">efficitur, vt in ſuperiori horologio ex par-
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te boreali eleuato, cuius inclinatio minor eſt altitudine poli, vt in Analemmate primo apparet,
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arcus ſignorum borealium contineantur inter centrum horologij, & </
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cus vero auſtralium ſignorum vltra lineam æquinoctialem: </
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<
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</
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<
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cẽtrum E, in portionẽ meridianæ lineæ M N, ſuperioris horologij vltra lineã æquinoctialem per
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N, productã: </
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<
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">puncta verò quadrantis auſtralis G I, vmbram proiiciunt per E, centrum in portionẽ
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meridianæ lineæ OP, inferioris horologij vltra æquinoctialẽ lineam per P, productã fit, vt in ſupe-
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riori horologio ex parte boreali eleuato, cuius inclinatio maior eſt altitudine poli, vt in ſecundo
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Analẽmate conſpicitur, arcus ſignorum borealium exiſtant vltra lineã æquinoctialem, & </
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inter centrum, & </
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">eandẽ æquinoctialem lineam: </
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<
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beat. </
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<
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">Præterea quia in tertio Analemmate puncta quadrantis borealis F H, vmbram proii-
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ciuntin portionem meridianæ lineæ M N, horologii ſuperioris poſitam inter centrum, & </
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neam æquinoctialem: </
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<
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">puncta verò quadrantis auſtralis G I, vmbram proijciunt in portionem
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meridianæ lineæ O P, poſitam inter centrum, & </
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<
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<
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in horologio ſuperiori ex parte auſtrali eleuato, cuius inclinatio minor eſt complemento altitudi
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nis poli, vt in tertio Analemmate, arcus ſignorum borealium ſint inter centrum, & </
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<
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noctialem, & </
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<
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quoniam in Analemmate quarto puncta quadrantis borealis F I, proijciunt vmbram in portionẽ
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meridianæ lineæ M N, ſuperioris horologii poſitam inter centrum, & </
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cta verò quadrantis auſtralis G H, vmbram proijciunt in portionem lineæ meridianæ O P, </
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