Voltaire, Elémens de la philosophie de Neuton : mis à la portée de tout le monde

Table of Notes

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          <pb o="119" file="0139" n="139" rhead="DE NEUTON."/>
          <p>
            <s xml:id="echoid-s1577" xml:space="preserve">Chacun d’eux peint ſur ce papier la cou-
              <lb/>
            leur primitive qu’il porte en lui-même. </s>
            <s xml:id="echoid-s1578" xml:space="preserve">Le
              <lb/>
            premier rayon, qui s’ecarte le moins de cet-
              <lb/>
            te perpendicule du priſme, eſt couleur de
              <lb/>
            feu; </s>
            <s xml:id="echoid-s1579" xml:space="preserve">le ſecond orangé; </s>
            <s xml:id="echoid-s1580" xml:space="preserve">le troiſième jaune;
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            </s>
            <s xml:id="echoid-s1581" xml:space="preserve">le quatrième verd; </s>
            <s xml:id="echoid-s1582" xml:space="preserve">le cinquième bleu; </s>
            <s xml:id="echoid-s1583" xml:space="preserve">le
              <lb/>
            ſixième indigo. </s>
            <s xml:id="echoid-s1584" xml:space="preserve">Enfin celui qui s’écarte
              <lb/>
            davantage de la perpendicule, & </s>
            <s xml:id="echoid-s1585" xml:space="preserve">qui s’éleve
              <lb/>
            le dernier au-deſſus des autres, eſt le vio-
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            let.</s>
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            <s xml:id="echoid-s1587" xml:space="preserve">Un ſeul faiſceau de lumiere, qui aupara-
              <lb/>
              <note position="right" xlink:label="note-0139-01" xlink:href="note-0139-01a" xml:space="preserve">Anato-
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              mie de
                <lb/>
              la lu-
                <lb/>
              miere.</note>
            vant faiſoit la couleur blanche, eſt donc un
              <lb/>
            compoſé de ſept faiſceaux qui ont chacun
              <lb/>
            leur couleur. </s>
            <s xml:id="echoid-s1588" xml:space="preserve">L’aſſemblage de ſept rayons
              <lb/>
            primordiaux fait donc le blanc.</s>
            <s xml:id="echoid-s1589" xml:space="preserve"/>
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          <p>
            <s xml:id="echoid-s1590" xml:space="preserve">Si vous en doutez encore, prenez un des
              <lb/>
            verres lenticulaires de lunette, qui raſſem-
              <lb/>
            blent tous les rayons à leur foyer: </s>
            <s xml:id="echoid-s1591" xml:space="preserve">expoſez
              <lb/>
            ce verre au trou par lequel entre la lumie-
              <lb/>
            re; </s>
            <s xml:id="echoid-s1592" xml:space="preserve">vous ne verrez jamais à ce foyer qu’un
              <lb/>
            rond de blancheur. </s>
            <s xml:id="echoid-s1593" xml:space="preserve">Expoſez ce même ver-
              <lb/>
            re au point, où il pourra raſſembler tous
              <lb/>
            les ſept rayons partis-du priſme:</s>
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