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<eqnpairs>
  <author></author>
  <institution></institution>
  <comments></comments>
  <background></background>
  <template id='dominos 8' left-margin='15.00' top-margin='15.00' right-margin='15.00' bottom-margin='15.00' width='210' height='297' scale='1.00' orientation='portrait'/>
  <gui-settings>
    <active-view view-id='solution'/>
    <active-option view-id='backSide' option-id='backSide.normal size'/>
    <active-option view-id='input' option-id='input.paired.8'/>
    <active-option view-id='output' option-id='output.normal size'/>
    <active-option view-id='solution' option-id='solution'/>
    <active-option view-id='table' option-id='table'/>
  </gui-settings>
  <eqnpair>
<math display = 'block'>
  <mrow>
    <mtext>Electrons orbit the atom</mtext>
  </mrow>
</math>
<math display = 'block'>
  <mtable columnalign='left' linebreak='true'>
    <mtr>
      <mtd>
        <mtext>Atom may absorb the energy</mtext>
      </mtd>
    </mtr>
    <mtr>
      <mtd>
        <mtext>of an incoming photon or</mtext>
      </mtd>
    </mtr>
    <mtr>
      <mtd>
        <mtext>electron if it is exactly</mtext>
      </mtd>
    </mtr>
    <mtr>
      <mtd>
        <mtext>the amount of a transition</mtext>
      </mtd>
    </mtr>
  </mtable>
</math>
  </eqnpair>
  <eqnpair>
<math display = 'block'>
  <mtable columnalign='left' linebreak='true'>
    <mtr>
      <mtd>
        <mtext>The atomic electron moves</mtext>
      </mtd>
    </mtr>
    <mtr>
      <mtd>
        <mtext>up a transition level</mtext>
      </mtd>
    </mtr>
    <mtr>
      <mtd>
        <mtext>"exitation"</mtext>
      </mtd>
    </mtr>
  </mtable>
</math>
<math display = 'block'>
  <mrow>
    <mtext>hf</mtext>
    <mo>=</mo>
    <msub>
      <mtext>E</mtext>
      <mtext>2</mtext>
    </msub>
    <mo>&minus;</mo>
    <msub>
      <mtext>E</mtext>
      <mtext>1</mtext>
    </msub>
  </mrow>
</math>
  </eqnpair>
  <eqnpair>
<math display = 'block'>
  <mtable columnalign='left' linebreak='true'>
    <mtr>
      <mtd>
        <mtext>Then a time later then</mtext>
      </mtd>
    </mtr>
    <mtr>
      <mtd>
        <mtext>electron moves down</mtext>
      </mtd>
    </mtr>
    <mtr>
      <mtd>
        <mtext>a level</mtext>
      </mtd>
    </mtr>
  </mtable>
</math>
<math display = 'block'>
  <mtable columnalign='left' linebreak='true'>
    <mtr>
      <mtd>
        <mtext>it is then E</mtext>
        <mo>=</mo>
        <mtext>hf is</mtext>
      </mtd>
    </mtr>
    <mtr>
      <mtd>
        <mtext>released from</mtext>
      </mtd>
    </mtr>
    <mtr>
      <mtd>
        <mtext>the atom "de</mtext>
        <mo>&minus;</mo>
        <mtext>exitation"</mtext>
      </mtd>
    </mtr>
    <mtr>
      <mtd>
        <mtext>or "fluorescence"</mtext>
      </mtd>
    </mtr>
  </mtable>
</math>
  </eqnpair>
  <eqnpair>
<math display = 'block'>
  <mtable columnalign='left' linebreak='true'>
    <mtr>
      <mtd>
        <mtext>Light is only given out in</mtext>
      </mtd>
    </mtr>
    <mtr>
      <mtd>
        <mtext>discrete packets</mtext>
      </mtd>
    </mtr>
  </mtable>
</math>
<math display = 'block'>
  <mtable columnalign='left' linebreak='true'>
    <mtr>
      <mtd>
        <mtext>they are consist for each</mtext>
      </mtd>
    </mtr>
    <mtr>
      <mtd>
        <mtext>type of atom</mtext>
      </mtd>
    </mtr>
    <mtr>
      <mtd>
        <mtext>and form an individual</mtext>
      </mtd>
    </mtr>
    <mtr>
      <mtd>
        <mtext>fingerprint</mtext>
      </mtd>
    </mtr>
  </mtable>
</math>
  </eqnpair>
  <eqnpair>
<math display = 'block'>
  <mtable columnalign='left' linebreak='true'>
    <mtr>
      <mtd>
        <mtext>The intensity of the emissions</mtext>
      </mtd>
    </mtr>
    <mtr>
      <mtd>
        <mtext>depends upon</mtext>
      </mtd>
    </mtr>
  </mtable>
</math>
<math display = 'block'>
  <mtable columnalign='left' linebreak='true'>
    <mtr>
      <mtd>
        <mtext>the intensity of the stimulated</mtext>
      </mtd>
    </mtr>
    <mtr>
      <mtd>
        <mtext>photons or electrons</mtext>
      </mtd>
    </mtr>
  </mtable>
</math>
  </eqnpair>
  <eqnpair>
<math display = 'block'>
  <mtable columnalign='left' linebreak='true'>
    <mtr>
      <mtd>
        <mtext>A coating on a flourescent</mtext>
      </mtd>
    </mtr>
    <mtr>
      <mtd>
        <mtext>tube aborbs UV photons</mtext>
      </mtd>
    </mtr>
  </mtable>
</math>
<math display = 'block'>
  <mtable columnalign='left' linebreak='true'>
    <mtr>
      <mtd>
        <mtext>but when it de</mtext>
        <mo>&minus;</mo>
        <mtext>excites it</mtext>
      </mtd>
    </mtr>
    <mtr>
      <mtd>
        <mtext>produces visible photons.</mtext>
      </mtd>
    </mtr>
  </mtable>
</math>
  </eqnpair>
  <eqnpair>
<math display = 'block'>
  <mtable columnalign='left' linebreak='true'>
    <mtr>
      <mtd>
        <mtext>The energy from the UV</mtext>
      </mtd>
    </mtr>
    <mtr>
      <mtd>
        <mtext>photons is in effect split</mtext>
      </mtd>
    </mtr>
    <mtr>
      <mtd>
        <mtext>into smaller packets</mtext>
      </mtd>
    </mtr>
  </mtable>
</math>
<math display = 'block'>
  <mtable columnalign='left' linebreak='true'>
    <mtr>
      <mtd>
        <mtext>this makes a fluorescent</mtext>
      </mtd>
    </mtr>
    <mtr>
      <mtd>
        <mtext>tube appear white.</mtext>
      </mtd>
    </mtr>
  </mtable>
</math>
  </eqnpair>
  <eqnpair>
<math display = 'block'>
  <mrow>
    <mtext>the light is emitted with</mtext>
  </mrow>
</math>
<math display = 'block'>
  <mrow>
    <mtext>a broader spectral</mtext>
    <mi>&lambda;</mi>
  </mrow>
</math>
  </eqnpair>
  <eqnpair>
<math display = 'block'>
  <mrow>
    <mtext>animatedscience.co.uk</mtext>
  </mrow>
</math>
  </eqnpair>
</eqnpairs>
