Schott, Gaspar
,
Mechanica hydraulico-pneumatica. Pars I. Mechanicae Hydraulico-pnevmaticae Theoriam continet.
,
1657
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§ V.
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Heronis error in elevando oleo vi Expulſivâ
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in lucerna.
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>HEro Alexandrinus in libello de Spiritalibus cap. 72. proponit
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hanc Machinam. </
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Lucernæ conſtructio, vt ellychnio impo
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ſito, quando oleum deficiat, ex aure eius oleum in ellychnium infun
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datur, quantum quis voluerit, nullo ipſi appoſito vaſe, ex quo oleum in
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fluat.
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>Qua quidem in conſtructione errorem committit graviſ
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ſimum (ſi tamen ipſius eſt error, & non potiùs Interpretis, qui
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figuras appoſuit) quem hîc detegere oportet, ne alijs etiam ſit
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errandi occaſio. </
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iam libentiùs facio, quòd nec
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Federicus Commandinus, qui
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ex Græco in latinum tranſtulit
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Heronem; nec Ioannes Bapti
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ſta Aleottus, qui Commandini
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interpretationem red didit Itali
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cam; nec Ioannes Baptiſta Porta,
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qui Heronis errorem etiam ob
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ſervavit, genuinam lucernæ de
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lineationem dederunt. </
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verò hîc dare conabimur, allatis
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Heronis verbis ex Commandini
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translatione, addendo nonnulla
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verba majoris claritatis gratia,
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quæ aſteriſcis in margine no
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tantur. </
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>Sic ergo diſcurrit Hero. </
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Conſtruatur lucerna, baſim habens
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concavam, & triangularem inſtar
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pyramidis; ſit que baſis concava
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AB
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CD,
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& in ea diaphragma
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EF. </
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Lu
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cernæ autem caulis ſit
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GH,
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& ipſe
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concavus; ſupra quem ſit concavus
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calathus
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KL,
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plurimum olei conti
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nens. </
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<
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>Ex diaphragmate
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EF
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pro-
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