Musschenbroek, Petrus van
,
Physicae experimentales, et geometricae de magnete, tuborum capillarium vitreorumque speculorum attractione, magnitudine terrae, cohaerentia corporum firmorum dissertationes: ut et ephemerides meteorologicae ultraiectinae
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1 - 30
31 - 60
61 - 90
91 - 120
121 - 150
151 - 180
181 - 210
211 - 240
241 - 270
271 - 300
301 - 330
331 - 360
361 - 390
391 - 420
421 - 450
451 - 480
481 - 510
511 - 540
541 - 570
571 - 600
601 - 630
631 - 660
661 - 667
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INTRODUCTIO AD COHÆRENTIAM
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& </
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">ſimul Tubus F G productus fuit ad longitudinem 100 pedum: </
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">In
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quo apparatu aquâ penitus repleto, tandem a parte inferiori fiſ-
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ſura oriebatur ab S verſus R, quæ tranſverſe deinde ſerpebat ab R
<
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verſus T, ferrumine interim partes bene tenente; </
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<
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xml:space
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">manſerat vero
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apparatus integer tubo tantum ad 80 & </
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<
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xml:space
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pleto.</
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<
s
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">Ita quidem firmitatem ferri demonſtravit Mariottus, utinam ad-
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didiſſet cujuſnam craſſitiei fuiſſet, nam omne ferrum ſtanno obdu-
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ctum non eſt æque craſſum: </
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<
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xml:space
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">quia autem aquæ ductibus potius in-
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ſerviunt tubi plumbei, Experimenta cum hiſce capta erunt majoris
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utilitatis.</
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<
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<
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">Confectum fuit Tympanum plumbeum, cujus diameter in me-
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dio erat 1 pedis, altitudo 18 pollic. </
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<
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xml:space
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">ambo extrema ad ſe appropin-
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quabant, ut modo diametrum 8 pollicum habuerint, quæ inſiſtebant
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laminæ plumbeæ planæ: </
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<
s
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xml:space
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">ex medio ſuperioris exſurgebat tubus
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plumbeus 100 pedes altus, omnis hic apparatus ferrumine conjun-
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gebatur ſecum invicem, ferrumen latitudinem unius pollicis occu-
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pabat, & </
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<
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">altitudinem 8 linearum: </
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">craſſities plumbi componentis
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Tympanum ejuſque baſis erat 2 {1/2} linearum: </
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<
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xml:space
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">apparatus hic impletus
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aqua uſque ad 100 pedes manſit integer, baſi tamen ſuperiori & </
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inferiori ſe incurvante ad altitudinem {1/2} pollicis; </
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Tympani lima abraſum fuit ad altitudinem circiter 6 pollicum & </
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ad latitudinem 4 pollicum, craſſitie plumbi reducta ad 1 lineam,
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vel paulo minus, oriebatur inflatio, findebatur plumbum ad lon-
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gitudinem 3 pollicum, omni effluente per fiſſuram aqua: </
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<
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">adeoque
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plumbum craſſitiei 2 {1/2} linearum firmitate ſuâ pluſquam ſufficit ad
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preſſionem aquæ 100 pedes altæ perferendam in tubo diametri 1
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pedis, hinc tuto ponitur craſſities {2/10} pollicis ſufficientis firmitatis.
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<
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">Romerus memorat in Experimento Verſalleano Tubum plumbeum
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diametri 16 pollicum, craſſitiei 6 {1/3} linearum, altitudinis 50 pedum
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ſufficientem firmitatem habuiſſe ad aquæ preſſioni reſiſtendum,
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quod mirum non eſt, nam ſecundum Experimentum Mariotti mo-
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do allatum, craſſities 3 {1/3} linearum ſufficeret, imo minor adhuc: </
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Ex his Experimentis poterimus craſſities tuborum plumbeorum
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facile determinare, ut habeant datam firmitatem, reſiſtantque
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preſſionibus aquæ in data altitudine, nam demonſtratum eſt in </
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