Tartaglia, Niccolo, Quesiti et inventioni diverse, 1554

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              <pb pagenum="23" xlink:href="042/01/045.jpg"/>
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                <s id="s.000607">QVESITO DECIM'OTTAVO FATTOMI
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                dal Signor Iacomo de Achaial' Anno.
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                1542.</s>
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              <p type="head">
                <s id="s.000608">I
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                n Venetia qual ui
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                alla Senſa.
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                </s>
              </p>
              <p type="main">
                <s id="s.000609">SIGNOR IACOMO. I
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                o ho uiſto per iſperientia che tirando con una Arte­
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                gliaria in una muraglia standoui molto propinquo non ui fa coſi gagliardo effet­
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                to, ouer paſſata quanto fa à starui alquanto piu di lontano, et per leragioni da uoi aduc
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                te nella uoſtra nuoua ſcientia, doueria ſeguir tutto al contrario, perche la balla tirata
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                da ogni artegliaria quanto piu ſe allontana dalla bocca del pezzo tanto piu ſe allenta di
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                uelocita, come uoi approuate, cioe che quella ua men ueloce, & doue ua men ueloce, iui
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                fa menor effetto. </s>
                <s id="s.000610">Adunque quanto piu ſi sta propinquo al luoco doue ſe tira tanto mag
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                gior effetto doueria far tal balla nel luoco doue percuote, di quello faria ſtandoui piu
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                lontano, perche tal balla feriſſe di moto piu ueloce, & tamen, come diſopra ho detto.
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                </s>
                <s id="s.000611">Io trouo con la iſperientia riuſcir tutto al contrario, è per tanto ui adimando la cauſa
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                di queſto inconueniente.
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                N. P
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                er ben riſoluere queſto dubbio biſogna notare qual­
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                mente ogni coſa moſſa moue ſempre qualche altra coſa. </s>
                <s id="s.000612">Et pero quando che la balla
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                uien moueſta da quella uentoſita cauſata dal ſalnitrio, la medeſima balla inſteme con la
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                medeſima uentoſita, moue anchora in quel medeſimo iſtante quel aere à ſe conterminale
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                nella canna, & quel medeſimo aere moue & ſpinge l'altro aere à ſe conſequentemente
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                conterminale, & coſi l'altro ſpinge l'altro talmente che la detta balla uien à ſpingere,
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                & à mandare auanti di ſe una gran quantita di aere di forma molto longa, la qual for­
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                ma, quantunque la ſia de aere, per uigor del moto, tal aere ſumme grauita in ſe talmen­
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                te, che per un certo poco ditempo ua penetrando l'altro aere che per iluiaggio ſuo ri­
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                troua, come ſe fuſſe quaſi un trauo di legno, ma tal ſuo penetrar non procede molto
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                tano, perche tal figura aerea, per un poco di tempo, ouer ſpacio procede auanti della
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                balla, ma perche la balla è di materia graue piu facilmente penetra lo aere, di quello fa
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                la detta figura aerea, & pero la balla uien a eſſer di moto molto piu uelocißima della
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                detta figura aerea, & per tanto in breuißimo tempo la detta balla uien à laſciarſe de
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                drio da ſe quella tal fignra aerea (che prima andaua auanti diſe) hor per tornare al no
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                ſtro primo propoſito, quando che con una artegliariaſe tira in una coſa, che kiſia mol­
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                to propinquißima, quella figura aerea, che è ſpinta auanti della balla detta di ſopra)
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                per cuotera prima in quella coſa doue ſe tira, dellaballa, & per non eſſer tal figura ae­
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                rea atta à penetrar quella coſa, eglie neceſſario, che quella prima, & iſtrema parte di
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                tal figura, che prima percuote, à refflettere, & ritornar in drio, in contra alla mede­
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                ſima figura, & alla balla, che ſeguita (maßime quando tal tiro ſia tirato con il pezzo
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                aliuellato) la qual reffleßione (continua) nell'aggiongere della balla con il reſiduo di tal
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                figura aerea che è contigua alla balla fanno uno contraſto grandißimo, cioe il reſiduo
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                della figura aereauol proceder auanti, & non puo parte, per non eſſer atto (come di
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                ſopra è detto) à penetrar quella coſa doue ſe tira, & parte par cauſa di quell'altra par
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                te che è sforzata à ritornar in drio, la qual combustione da un grande impedimento al
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                moto della balla, talmente che la balla non puo far sutto quello effetto, che doueria fa­
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                re. </s>
                <s id="s.000613">Ma quando che il luoco doue ſe tira è d'una mediocre diſtantia, la bala per la ſua </s>
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          </chap>
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