Tartaglia, Niccolo, Quesiti et inventioni diverse, 1554

Table of figures

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                vetto uerſo il centro del mondo.
                  <emph.end type="italics"/>
                S. A. I
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                n queſta non ue intendo troppo bene. </s>
                <s id="s.001678">e pero
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                datemi uno eſſempio.
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                N. P
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                er eſſemplificare queſta diffinitione ſia il corpo.a. & il
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                retto deſcenſo di quello uerſo il centro del mondo ſia la linea.a.b. </s>
                <s id="s.001679">& ſia anchora li de­
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                ſcenſi.a.c. </s>
                <s id="s.001680">&. </s>
                <s id="s.001681">a.d. & de queſti dui ne ſia ſignati le due quantita, ouer parti.a.e. </s>
                <s id="s.001682">&. </s>
                <s id="s.001683">a.f.
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                eguale, & dalli dui ponti.e. </s>
                <s id="s.001684">&. </s>
                <s id="s.001685">f. ſiano tirate le
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                due linee.e.g. </s>
                <s id="s.001686">&. </s>
                <s id="s.001687">f.h. equidiſtanti al piano del­
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                l'Orizonte, e perche la parte.a.b.è menore della
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                parte.a.g. </s>
                <s id="s.001688">il deſcenſo.a.f.d.ſe dira eſſer piu obli
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                quo del deſcenſo.a.e.c.perche lui capiſſe manco
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                del deſcenſo retto, cioe della linea.a.b.in una me
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                deſima quantita. </s>
                <s id="s.001689">Et queſto medeſimo ſi debbe in­
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                tendere in tutti li deſcenſi che poteſſe fare il det­
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                to corpo.a. (ouer altro ſimile) ſtante appeſo al
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                al braccio di alcuna libra, cioe che quel deſcenſo
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                ſe dira eſſer piu obliquo, che per lo medeſimo mo
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                do capira manco della linea della direttione, in
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                una medeſima quantita de deſcenſo.
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                S.A. </s>
                <s id="s.001690">E
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                ue
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                  <figure id="id.042.01.169.1.jpg" xlink:href="042/01/169/1.jpg" number="70"/>
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                ho inteſo àſofficientia, e pero ſeguitati ſe haueti altra coſa da diffinire.
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                N. S
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                ignore
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                queſta é la ultima coſa che habbiamo da diffinire ſopra à queſta materia. </s>
                <s id="s.001691">Dimane poi
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                dichiariremo li principij di queſta ſcientia,
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                la promeſſa.
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                S.A. A
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                lla bon'hord.
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                <s id="s.001692">QVESITO. XXI. FATTO CONSE­
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                quentemente dal medeſimo Illuſtrißimo Signor
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                Don Diego Ambaſciator Ceſareo.
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                <s id="s.001693">SIGNOR AMBASCIATORE. H
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                or ſeguitati Tartaglia questi uoſtri
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                principij.
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                N. L
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                iprincipij de qual ſi uoglia ſcientia alcuni uogliano che ſiano det
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                ti dignita, perche quelli approuano altri, & loro non ponno eſſere approuati da altri,
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                alcuni le chiamano ſuppoſitioni, perche ſe ſuppongono per ueri in detta ſcientia, altri
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                piacque chiamarli petitioni, perche uolendo diſputare tal ſcientia, & quella ſoſtentare
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                con dimoſtrationi, biſogna prima adimandar e all'auerſario la conceßione de quelli,
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                perche ſe lui non li uoleſſe concedere (ma negare) ſaria negata tutta la ſcientia, ne ui
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                occorreria à diſputarla altr amente. </s>
                <s id="s.001694">Et perche queſta ultima opinione mi piace alqnan­
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                to piu delle altre due, petitioni le chiamaremo, & coſi anchora in forma de petitioni
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                li proferiremo.
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                <s id="s.001695">QVESITO. XXII. PETITIONE PRIM A.</s>
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                <s id="s.001696">
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                &
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                <s id="s.001697">Ad
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                imandamo che ne ſia conceſſo, che il mouimento natur ale de ogni corpo pon­
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                deroſo, e graue ſia rettamente uerſo il centro del mondo.
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                S. AMB. Q
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                ueſto
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                non è da negare.
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