Newton, Isaac, Philosophia naturalis principia mathematica, 1713

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                  <s>Computum ineundo prodcunt pondus globi in vacuo (76 1/12)
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                  gran,
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                    <lb/>
                    <arrow.to.target n="note329"/>
                  exceſſus hujus ponderis ſupra pondus in aqua (71 17/48)
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                  gran,
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                  diameter
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                  globi 0,81296
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                  dig,
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                  octo tertiæ partes hujus diametri 2,16789
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                  dig,
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                    <lb/>
                  ſpatium 2 F 2,3217
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                  dig,
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                  ſpatium quod globus pondere (5 1/16)
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                  gran,
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                  tempore 1″, abſque reſiſtentia cadendo deſcribat 12,808
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                  dig,
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                  &
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                  tempus G 0′,301056. Globus igitur, velocitate maxima quacum
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                  poteſt in aqua vi ponderis (5 1/16)
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                  gran.
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                  deſcendere, tempore 0′,301056
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                  deſcribet ſpatium 2,3217
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                  dig.
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                  & tempore 15″ ſpatium 115,678
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                  dig.
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                  Subducatur ſpatium 1,3862944 F ſeu 1,609
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                  dig.
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                  & manebit ſpatium
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                  114,069
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                  dig.
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                  quod proinde globus eodem tempore in vaſe latiſli­
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                  mo cadendo deſcribere debet. </s>
                  <s>Propter anguſtiam vaſis noſtri de­
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                  trahi debet ſpatium 0,895
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                  dig.
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                  circiter. </s>
                  <s>Et ſic manebit ſpatium
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                  113,174
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                  dig.
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                  quod globus cadendo in hoc vaſe, tempore 15″ de­
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                  ſcribere debuit per Theoriam quamproxime. </s>
                  <s>Deſcripſit vero digi­
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                  tos 112 per Experimentum. </s>
                  <s>Differentia eſt inſenſibilis. </s>
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                <p type="margin">
                  <s>
                    <margin.target id="note329"/>
                  LIBER
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                  SECUNDUS.</s>
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                <p type="main">
                  <s>
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                  Exper.
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                  3. Globi tres æquales, quorum pondera ſeorſim erant
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                  121
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                  gran.
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                  in aere & 1
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                  gran.
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                  in aqua, ſucceſſive demittebantur; &
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                  cadebant in aqua temporibus 46″, 47″, & 50″, deſcribentes alti­
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                  tudinem digitorum 112. </s>
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                <p type="main">
                  <s>Per Theoriam hi globi cadere debuerunt tempore 40″ circiter. </s>
                  <s>
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                  Quod tardius ceciderunt, vel bullulis nonnullis globo adhærenti­
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                  bus, vel rarefactioni ceræ ad calorem vel tempeſtatis vel manus
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                  globum demittentis, vel erroribus inſenſibilibus in ponderandis
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                  globis in aqua, vel denique minori proportioni reſiſtentiæ quæ a
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                  vi inertiæ in tardis motibus oritur ad reſiſtentiam quæ oritur ab
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                  aliis cauſis, tribuendum eſſe puto. </s>
                  <s>Ideoque pondus globi in aqua
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                  debet eſſe plurium granorum ut experimentum certum & fide dig­
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                  num reddatur. </s>
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                <p type="main">
                  <s>
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                  Exper.
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                  4. Experimenta hactenus deſcripta cæpi ut inveſtigarem
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                  reſiſtentias fluidorum antequam Theoria, in Propoſitionibus pro­
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                  xime præcedentibus expoſita, mihi innoteſceret. </s>
                  <s>Poſtea, ut Theo­
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                  riam inventam examinarem, paravi vas ligneum latitudine interna
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                  digitorum 8 2/3, profunditate pedum quindecim cum triente. </s>
                  <s>De­
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                  inde ex cera & plumbo incluſo globos quatuor formavi, ſingulos
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                  pondere 139 1/4 granorum in aere & 7 1/8 granorum in aqua. </s>
                  <s>Et hos
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                  demiſi ut tempora cadendi in aqua per pendulum, ad ſemi-minuta
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                  ſecunda oſcillans, menſurarem. </s>
                  <s>Globi, ubi ponderabantur & po­
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                  ſtea cadebant, frigidi erant & aliquamdiu frigidi manſerant; quia
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                  calor ceram rarefacit, & per rarefactionem diminuit pondus globi
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                  in aqua, & cera rarefacta non ſtatim ad denſitatem priſtinam per </s>
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