Boyle, Robert, New experiments physico-mechanicall, touching the spring of the air and its effects, 1660

Page concordance

< >
Scan Original
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
< >
page |< < of 862 > >|
    <archimedes>
      <text>
        <body>
          <chap>
            <p type="main">
              <s>
                <pb xlink:href="013/01/189.jpg" pagenum="159"/>
              from pumping) by the bare application
                <lb/>
              of a hand moderately warm to the deſert­
                <lb/>
              ed part of the Tube, the remaining Wa­
                <lb/>
              ter would be ſpeedily and notably de­
                <lb/>
              preſſ'd. </s>
              <s>And having for a while held a
                <lb/>
              kindled Coal to the outſide of the Tube,
                <lb/>
              (the Pump being ſtill unimploy'd, becauſe
                <lb/>
              the Veſſel chanced to hold extraordinarily
                <lb/>
              well) the Air was by the heat ſo far ex­
                <lb/>
              panded, that it quickly drave the Water
                <lb/>
              to the bottom of the Tube, which was
                <lb/>
              divers Inches beneath the ſurface of the
                <lb/>
              ambient Water. </s>
              <s>Whereby it appears (by
                <lb/>
              the ſame way by which we formerly mea­
                <lb/>
              ſur'd the dilatation of the Air) that the
                <lb/>
              Air, even when it is expanded to between
                <lb/>
              90 and 100 times, its extent will yet rea­
                <lb/>
              dily admit of a much further rarifaction
                <lb/>
              by heat. </s>
            </p>
            <p type="main">
              <s>I conſider'd alſo that in caſe the Bub­
                <lb/>
              bles we have been ſpeaking of, were pro­
                <lb/>
              duc'd by the parcels of Air latitant in the
                <lb/>
              Water, that Air being now got together
                <lb/>
              to the top of the Tube, though the Air
                <lb/>
              were again drawn out of the Receiver,
                <lb/>
              the taking off its preſſure would not diſ­
                <lb/>
              cloſe bubbles as before; and accordingly,
                <lb/>
              the Air being again pump'd out, the Wa­
                <lb/>
              ter in the Tube deſcended as formerly: </s>
            </p>
          </chap>
        </body>
      </text>
    </archimedes>
Impressum