Stevin, Simon
,
Mathematicorum hypomnematum... : T. 4: De Statica : cum appendice et additamentis
,
1605
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*DE* H*YDROSTATICES ELEMENTIS*.
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K L biſecet latera A B, D C, cujus triens inferior L M, atque L N ſemiſſis,
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ſeu quod idem eſt N ſit centrum fundi parallelogrammi A B C D: </
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<
s
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xml:space
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intervallum M N itaſecetur in O, ut M O ad O N ſit quemadmodum G A
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ad H I. </
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<
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xml:space
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">Gravitatis centrum preſſus aquæ in fundo A B C D
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in O conſiſtere demonſtrator. </
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xml:space
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">P*RAEPARATIO*. </
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xml:space
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ſuperficiem in P & </
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<
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xml:space
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<
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fig-527.01.139-01
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fig-527.01.139-01a
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number
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198
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<
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file
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527.01.139-01
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http://echo.mpiwg-berlin.mpg.de/zogilib?fn=/permanent/library/xxxxxxxx/figures/527.01.139-01
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tor; </
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<
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">ſit q́ue C Q horizonti paralle-
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la lateri C D perpendicularis ipſiq́;
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</
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<
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xml:space
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">adeò C P æqualis; </
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<
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xml:space
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">denique B R,
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A S, lateri C T, item R T, S V ipſi
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B C æquales conſtituantur & </
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<
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rallelæ.</
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<
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<
s
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xml:space
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">Hanc alteram figuram antece-
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denti E P C D Q æqualem, ſimi-
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lem, & </
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<
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cujus latus C D horizonti ad per-
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<
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fig-527.01.139-02
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fig-527.01.139-02a
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number
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199
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527.01.139-02
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xlink:href
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http://echo.mpiwg-berlin.mpg.de/zogilib?fn=/permanent/library/xxxxxxxx/figures/527.01.139-02
"/>
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pendiculũ immineat ſitq́; </
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gravitatis columnę ABCDRSVT,
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atque Y centrum gravitatis priſma-
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tis R S V T Q; </
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<
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X N, Y M.</
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<
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xml:space
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mate X gravitatis centrum ſit pa-
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rallelepipedi A B C D R S V T, & </
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N baſis A B C D, itemq́ue C T
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horizonti perpendicularis, etiam
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X N horizonti perpendicularis ejusq́; </
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<
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</
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<
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xml:space
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">N eſt columnæ iſtius preſſionis centrum, quod autem M ſit preſſus corporis
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S R T V Q gravitatis centrum è 18 propoſ. </
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<
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ipſorum jugum, iſtud autem in O ita eſt ſectum ut ratio ſegmentorum O M,
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O N eadem ſit quæ A G ad A I, ſed ita quoq e eſt parallelepipedum
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A B C D R S V T ad priſma S R T V Q: </
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<
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ad S R T V Q ſic O M ad O N. </
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<
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trum erit preſſionis hujus ſecundæ figuræ. </
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<
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xml:space
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ctas, primæ ſecundæq́; </
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<
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">figuræ centra ſimili ſitu congruant, O quoque in prima
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figura gravitatis erit centrum.</
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">C*ONCLVSIO*. </
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xml:space
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">Itaque ſi parallelogrammi ad horizontem inclinati, & </
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<
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<
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invenire.</
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<
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lineum D E. </
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<
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xml:space
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le
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cti invenire.</
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