Gravesande, Willem Jacob 's, Physices elementa mathematica, experimentis confirmata sive introductio ad philosophiam Newtonianam; Tom. 1

Table of contents

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[491.] CAPUT VIII. De refractione luminis, poſitis mediis ſuperficie ſphæricâ ſeparatis.
Page: 572 (31)
[492.] Experimentum 1.
Page: 573 (32)
[493.] Experimentum 2.
Page: 578 ((34))
[494.] Experimentum 3.
Page: 578 ((34))
[495.] Experimentum 4.
Page: 578 ((34))
[496.] Experimentum 5.
Page: 578 ((34))
[497.] Experimentum 6.
Page: 582 ((35))
[498.] Experimentum. 7.
Page: 583 ((36))
[499.] Experimentum 8.
Page: 583 ((36))
[500.] Experimentum 9.
Page: 587 ((37))
[501.] CAPUT IX. De Motu Luminis trans Medium denſius. Vbi de Lentium affectionibus.
Page: 588 (38)
[502.] Definitio i.
Page: 588 (38)
[503.] Definitio 2.
Page: 589 (39)
[504.] Experimentum i.
Page: 590 (40)
[505.] Experimentum 2.
Page: 594 (41)
[506.] Experimentum 3.
Page: 594 (41)
[507.] Experimentum 4.
Page: 595 (42)
[508.] CAPUT X. De Viſu, ubi de Oculi conſtructione.
Page: 595 (42)
[509.] Definitio.
Page: 595 (42)
[510.] Experimentum i.
Page: 596 (43)
[511.] Experimentum 2.
Page: 598 (45)
[512.] Experimentum 3.
Page: 598 (45)
[513.] CAPUT XI. De viſione trans vitra, & corrigendis quibuſdam oculorum vitiis.
Page: 602 ((49))
[514.] De Microſcopiis & Teleſcopiis.
Page: 607 ((54))
[515.] Definitio 1.
Page: 607 ((54))
[516.] Definitio 2.
Page: 607 ((54))
[517.] Experimentum 1.
Page: 607 ((54))
[518.] Experimentum 2.
Page: 611 (55)
[519.] Definitio 3. & 4.
Page: 611 (55)
[520.] Definitio 3.
Page: 612 (56)
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              <pb o="335" file="0455" n="500" rhead="MATHEMATICA. LIB. II. CAP. XIX."/>
            num edere, licet aër ab eo agitatus nullam cum aëre ex-
              <lb/>
            teriori communicationem habeat; </s>
            <s xml:id="echoid-s11987" xml:space="preserve">ex quo ſequitur aëris a-
              <lb/>
              <note position="right" xlink:label="note-0455-01" xlink:href="note-0455-01a" xml:space="preserve">1177.</note>
            gitatione fibras, ex quibus corpora conſtant, moveri; </s>
            <s xml:id="echoid-s11988" xml:space="preserve">qui
              <lb/>
            motus in aërem exteriorem transfertur.</s>
            <s xml:id="echoid-s11989" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s11990" xml:space="preserve">Hæc ſoni tranſſatio ex fibrarum motu tremulo maxime
              <lb/>
            notabilis eſt; </s>
            <s xml:id="echoid-s11991" xml:space="preserve">& </s>
            <s xml:id="echoid-s11992" xml:space="preserve">quouſque hujus motus communicatio ſeſe
              <lb/>
            extendat, unico Experimento patebit.</s>
            <s xml:id="echoid-s11993" xml:space="preserve"/>
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        <div xml:id="echoid-div1730" type="section" level="1" n="418">
          <head xml:id="echoid-head564" xml:space="preserve">
            <emph style="sc">Experimentum</emph>
          4.</head>
          <p>
            <s xml:id="echoid-s11994" xml:space="preserve">Differt hoc cum Experimento 1. </s>
            <s xml:id="echoid-s11995" xml:space="preserve">in hoc ſolo, loco
              <lb/>
              <note position="right" xlink:label="note-0455-02" xlink:href="note-0455-02a" xml:space="preserve">1178.</note>
            machinæ plumbeæ COC campana funibus alligatur extre-
              <lb/>
              <note position="right" xlink:label="note-0455-03" xlink:href="note-0455-03a" xml:space="preserve">TAB. XLVI.
                <lb/>
              fig. 2.</note>
            mitatibus laminæ æneæ ad inſtar gnomonis duplicis inflexæ,
              <lb/>
            quæ cum orbe Antliæ Pneumaticæ ope cochleæ cohæret.
              <lb/>
            </s>
            <s xml:id="echoid-s11996" xml:space="preserve">De cetero, evacuato aëre, campana eodem modo ac in 1. </s>
            <s xml:id="echoid-s11997" xml:space="preserve">
              <lb/>
            Experimento agitatur; </s>
            <s xml:id="echoid-s11998" xml:space="preserve">& </s>
            <s xml:id="echoid-s11999" xml:space="preserve">parva tantum inter ſonos, admiſſo
              <lb/>
            aut exhauſto aëre, percipitur differentia.</s>
            <s xml:id="echoid-s12000" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s12001" xml:space="preserve">Motus tremulus partium campanæ communicatur filo
              <lb/>
              <note position="right" xlink:label="note-0455-04" xlink:href="note-0455-04a" xml:space="preserve">1179.</note>
            æneo bd, quo funes, quibus campana ſuſpenditur, moven-
              <lb/>
            tur, motuſque transfertur in laminam æneam inflexam;
              <lb/>
            </s>
            <s xml:id="echoid-s12002" xml:space="preserve">cochlea, qua hæc cum orbe æneo Machinæ Pneumaticæ
              <lb/>
            conjungitur, orbem hunc tangit, & </s>
            <s xml:id="echoid-s12003" xml:space="preserve">huic motum tremu-
              <lb/>
            lum communicat, quo aër agitatur, & </s>
            <s xml:id="echoid-s12004" xml:space="preserve">ſonus campanæ au-
              <lb/>
            ditur.</s>
            <s xml:id="echoid-s12005" xml:space="preserve"/>
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            <s xml:id="echoid-s12006" xml:space="preserve">Ut per ſolida corpora, ſic & </s>
            <s xml:id="echoid-s12007" xml:space="preserve">per fluida propagatur ſonus,
              <lb/>
              <note position="right" xlink:label="note-0455-05" xlink:href="note-0455-05a" xml:space="preserve">1180.</note>
            in quo tamen caſu admodum debilitatur.</s>
            <s xml:id="echoid-s12008" xml:space="preserve"/>
          </p>
        </div>
        <div xml:id="echoid-div1734" type="section" level="1" n="419">
          <head xml:id="echoid-head565" xml:space="preserve">
            <emph style="sc">Experimentum</emph>
          5.</head>
          <p>
            <s xml:id="echoid-s12009" xml:space="preserve">Vitro A includitur companula C quæ malleis m, m, motu ro-
              <lb/>
              <note position="right" xlink:label="note-0455-06" xlink:href="note-0455-06a" xml:space="preserve">1181.</note>
            tulæ agitatis, percutitur; </s>
            <s xml:id="echoid-s12010" xml:space="preserve">rotæque motus elafterio, illis ſimili,
              <lb/>
              <note position="right" xlink:label="note-0455-07" xlink:href="note-0455-07a" xml:space="preserve">TAB. XLVII.
                <lb/>
              fig. 2.</note>
            quæ in horologiis portatilibus uſu veniunt, per duo aut tria
              <lb/>
            minuta prima continuatur, vitrum operculo ligneo O obtegi-
              <lb/>
            tur, & </s>
            <s xml:id="echoid-s12011" xml:space="preserve">cerâ molli ingreſſus aquæ cohibetur. </s>
            <s xml:id="echoid-s12012" xml:space="preserve">Vitrum hoc-
              <lb/>
            ce vitro majori B, cujus fundus, ad altitudinem unius aut
              <lb/>
            duorum pollicum, mercurio obtegitur, immittitur, & </s>
            <s xml:id="echoid-s12013" xml:space="preserve">
              <lb/>
            vitrum B aquâ repletur. </s>
            <s xml:id="echoid-s12014" xml:space="preserve">Sonus auditur debilitatus tamen.</s>
            <s xml:id="echoid-s12015" xml:space="preserve"/>
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            <s xml:id="echoid-s12016" xml:space="preserve">Nulla autem inter campanam & </s>
            <s xml:id="echoid-s12017" xml:space="preserve">aërem externum, niſi
              <lb/>
            per fluida, aquam aut mercurium, communicatio datur.</s>
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