Schott, Gaspar
,
Mechanica hydraulico-pneumatica. Pars I. Mechanicae Hydraulico-pnevmaticae Theoriam continet.
,
1657
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Fons ad S.
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Georgium
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Venetijs.
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Protheoria III.
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PROTHEORIA
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TERTIA.
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Devi Rarefactiva; ſeu de tertio Hydro-pnev
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maticarum Machinarum Principio.
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§. I.
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Rarefactionis vis, & effectus mirabiles.
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>RArefactionem ingentes ſuppeditare vires vt
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alijs corporibus, ita aquæ & aëri, ad ea in omnem ſi
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tus differentiam impellendam, multòque magis ad
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hydro-pnevmatica omnis generis technaſmata mo
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lienda; is ſolus ignorare poteſt, qui ſtupendos ipſius effectus igno
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rat. </
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>videmus quotidie, miramurque, ac plangimus ſtragem,
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quam
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χῃταὶ</
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nitrato & ſulphureo pulvere intra bombarda
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rum militarium anguſtias rarefacto edunt, in ſternendis non ho
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minibus tantùm, ſed ædibus, turribus, propugnaculis, atque
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adeo vrbibus integris. </
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>Non Iovis tantummodo fulmina imita
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tur rarefactio in bombardis, ſed Plutonis etiam iras æmulatur in
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ſubterraneis cuniculis; tantò pernicioſiore ſtrage, quantò mi
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nùs patente. </
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ad vſque propugnaculum, cui ruinam minantur, viam anfra
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ctuoſam, anguſtamque, magneticæ pixidis ductu, uti inter alios
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docet P. Athanaſius Kircherus lib. 2. de Arte Magnet. par. 2. cap. 1.
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Probl. 7. & nos in Pantometro Kircherianolib. 5. Ichnographi
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co Probl. 8. </
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<
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>Sub loco deinde ruinæ deſtinato Cameram con
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ſtruunt laxiorem, eamque implent pulveris tormentarij vaſis,
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& oſtium claudunt, relicto exiguo foramine, perque viam totam
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ignis pabulum ſternunt, & egreſſi ignem applicant; qui ſerpens
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per viam accendit pulveris maſſam omnem Camerâ concluſam,
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itàque rarefacit, dilatatque, ut anguſtiarum impatiens, & laxio
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rem quærens locum, impoſitam ſibi molem diſiiciat horribili
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fremitu, nec minori terrore, quàm damno. </
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<
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magis ſimile terræ motui, qui & ipſe rarefactionis eſt effectus </
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