Bošković, Ruđer Josip, Abhandlung von den verbesserten dioptrischen Fernröhren aus den Sammlungen des Instituts zu Bologna sammt einem Anhange des Uebersetzers

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    <echo version="1.0RC">
      <text xml:lang="de" type="free">
        <div xml:id="echoid-div51" type="section" level="1" n="18">
          <pb o="146" file="0150" n="150" rhead="Anhang"/>
        </div>
        <div xml:id="echoid-div52" type="section" level="1" n="19">
          <head xml:id="echoid-head31" xml:space="preserve">Auflöſung des Triangels d k a
            <lb/>
          d k : k a # = # R : tang. k d a</head>
          <note position="right" xml:space="preserve">
            <lb/>
          Log. k a = # 43,08 # = # 1,6342757
            <lb/>
          Log. R = # # # 10,0 &c
            <lb/>
          # # # 11,6342757
            <lb/>
          Log. k d = # 32,2 # = # 1,5078559
            <lb/>
          ## Log. tang. k d a # = # 10,1264198
            <lb/>
          ## der nächſte # = # 10,1263063 von 53° 13′.
            <lb/>
          </note>
        </div>
        <div xml:id="echoid-div53" type="section" level="1" n="20">
          <head xml:id="echoid-head32" xml:space="preserve">Auflöſung des Triangels d m e
            <lb/>
          d m : m e # = # R : tang. m d e</head>
          <note position="right" xml:space="preserve">
            <lb/>
          Log. m e = # 34,97 # = # 1,5436956
            <lb/>
          Log. R = # # # 10,0 &c
            <lb/>
          # # # 11,5436956
            <lb/>
          Log. d m = # 122,7 # = # 2,0888446
            <lb/>
          ## Log. tang. m d e # = # 9,4548510
            <lb/>
          ## der nächſte # = # 9,4546276 von 15° 54′.
            <lb/>
          </note>
          <p>
            <s xml:id="echoid-s1812" xml:space="preserve">Die ganze Brechung der violeten Straalen iſt
              <lb/>
            der Unterſchied der itzt gefundenen Winkel</s>
          </p>
          <note position="right" xml:space="preserve">
            <lb/>
          53° # 13′
            <lb/>
          15 # 54
            <lb/>
          37 # 19 # = # r′
            <lb/>
          </note>
          <p>
            <s xml:id="echoid-s1813" xml:space="preserve">der brechende Winkel c des Priſma war 51° 30′.</s>
            <s xml:id="echoid-s1814" xml:space="preserve">Formel m = {ſin. {c + r/2}/ſin. {1/2} </s>
          </p>
        </div>
      </text>
    </echo>
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