<?xml version="1.0" encoding="UTF-8"?>
<dia:diagram xmlns:dia="http://www.lysator.liu.se/~alla/dia/">
  <dia:diagramdata>
    <dia:attribute name="background">
      <dia:color val="#ffffff"/>
    </dia:attribute>
    <dia:attribute name="pagebreak">
      <dia:color val="#000099"/>
    </dia:attribute>
    <dia:attribute name="paper">
      <dia:composite type="paper">
        <dia:attribute name="name">
          <dia:string>#A4#</dia:string>
        </dia:attribute>
        <dia:attribute name="tmargin">
          <dia:real val="2.8222000598907471"/>
        </dia:attribute>
        <dia:attribute name="bmargin">
          <dia:real val="2.8222000598907471"/>
        </dia:attribute>
        <dia:attribute name="lmargin">
          <dia:real val="2.8222000598907471"/>
        </dia:attribute>
        <dia:attribute name="rmargin">
          <dia:real val="2.8222000598907471"/>
        </dia:attribute>
        <dia:attribute name="is_portrait">
          <dia:boolean val="true"/>
        </dia:attribute>
        <dia:attribute name="scaling">
          <dia:real val="1"/>
        </dia:attribute>
        <dia:attribute name="fitto">
          <dia:boolean val="false"/>
        </dia:attribute>
      </dia:composite>
    </dia:attribute>
    <dia:attribute name="grid">
      <dia:composite type="grid">
        <dia:attribute name="width_x">
          <dia:real val="1"/>
        </dia:attribute>
        <dia:attribute name="width_y">
          <dia:real val="1"/>
        </dia:attribute>
        <dia:attribute name="visible_x">
          <dia:int val="1"/>
        </dia:attribute>
        <dia:attribute name="visible_y">
          <dia:int val="1"/>
        </dia:attribute>
        <dia:composite type="color"/>
      </dia:composite>
    </dia:attribute>
    <dia:attribute name="color">
      <dia:color val="#d8e5e5"/>
    </dia:attribute>
    <dia:attribute name="guides">
      <dia:composite type="guides">
        <dia:attribute name="hguides"/>
        <dia:attribute name="vguides"/>
      </dia:composite>
    </dia:attribute>
  </dia:diagramdata>
  <dia:layer name="tina" visible="true">
    <dia:object type="Standard - Box" version="0" id="O0">
      <dia:attribute name="obj_pos">
        <dia:point val="5.00356,9.97624"/>
      </dia:attribute>
      <dia:attribute name="obj_bb">
        <dia:rectangle val="4.95356,9.92624;15.0536,30.0262"/>
      </dia:attribute>
      <dia:attribute name="elem_corner">
        <dia:point val="5.00356,9.97624"/>
      </dia:attribute>
      <dia:attribute name="elem_width">
        <dia:real val="10"/>
      </dia:attribute>
      <dia:attribute name="elem_height">
        <dia:real val="20"/>
      </dia:attribute>
      <dia:attribute name="show_background">
        <dia:boolean val="true"/>
      </dia:attribute>
    </dia:object>
    <dia:object type="Standard - Polygon" version="0" id="O1">
      <dia:attribute name="obj_pos">
        <dia:point val="15.0036,10.0262"/>
      </dia:attribute>
      <dia:attribute name="obj_bb">
        <dia:rectangle val="14.9536,6.825;19.1036,30.1275"/>
      </dia:attribute>
      <dia:attribute name="poly_points">
        <dia:point val="15.0036,10.0262"/>
        <dia:point val="19.0536,6.92624"/>
        <dia:point val="19.0536,26.9262"/>
        <dia:point val="15.0036,30.0262"/>
      </dia:attribute>
      <dia:attribute name="show_background">
        <dia:boolean val="true"/>
      </dia:attribute>
    </dia:object>
    <dia:object type="Standard - Polygon" version="0" id="O2">
      <dia:attribute name="obj_pos">
        <dia:point val="9.05356,6.92624"/>
      </dia:attribute>
      <dia:attribute name="obj_bb">
        <dia:rectangle val="4.855,6.87615;19.204,10.077"/>
      </dia:attribute>
      <dia:attribute name="poly_points">
        <dia:point val="9.05356,6.92624"/>
        <dia:point val="19.0536,6.97624"/>
        <dia:point val="15.0036,9.97624"/>
        <dia:point val="5.00356,10.0262"/>
      </dia:attribute>
      <dia:attribute name="show_background">
        <dia:boolean val="true"/>
      </dia:attribute>
    </dia:object>
  </dia:layer>
  <dia:layer name="fonte" visible="true">
    <dia:object type="Standard - Ellipse" version="0" id="O3">
      <dia:attribute name="obj_pos">
        <dia:point val="19.5,17.95"/>
      </dia:attribute>
      <dia:attribute name="obj_bb">
        <dia:rectangle val="19.45,17.9;20.55,19.1"/>
      </dia:attribute>
      <dia:attribute name="elem_corner">
        <dia:point val="19.5,17.95"/>
      </dia:attribute>
      <dia:attribute name="elem_width">
        <dia:real val="1"/>
      </dia:attribute>
      <dia:attribute name="elem_height">
        <dia:real val="1.1000000000000014"/>
      </dia:attribute>
      <dia:attribute name="inner_color">
        <dia:color val="#ff0000"/>
      </dia:attribute>
    </dia:object>
    <dia:object type="Standard - Line" version="0" id="O4">
      <dia:attribute name="obj_pos">
        <dia:point val="20,18.5"/>
      </dia:attribute>
      <dia:attribute name="obj_bb">
        <dia:rectangle val="16.9,18;20.1,19"/>
      </dia:attribute>
      <dia:attribute name="conn_endpoints">
        <dia:point val="20,18.5"/>
        <dia:point val="17,18.5"/>
      </dia:attribute>
      <dia:attribute name="numcp">
        <dia:int val="1"/>
      </dia:attribute>
      <dia:attribute name="line_width">
        <dia:real val="0.20000000000000001"/>
      </dia:attribute>
      <dia:attribute name="line_style">
        <dia:enum val="4"/>
      </dia:attribute>
      <dia:attribute name="end_arrow">
        <dia:enum val="22"/>
      </dia:attribute>
      <dia:attribute name="end_arrow_length">
        <dia:real val="0.5"/>
      </dia:attribute>
      <dia:attribute name="end_arrow_width">
        <dia:real val="0.5"/>
      </dia:attribute>
      <dia:connections>
        <dia:connection handle="0" to="O3" connection="8"/>
      </dia:connections>
    </dia:object>
    <dia:object type="Standard - Line" version="0" id="O5">
      <dia:attribute name="obj_pos">
        <dia:point val="17,18.55"/>
      </dia:attribute>
      <dia:attribute name="obj_bb">
        <dia:rectangle val="14.6937,18.1548;17.3063,20.4952"/>
      </dia:attribute>
      <dia:attribute name="conn_endpoints">
        <dia:point val="17,18.55"/>
        <dia:point val="15,20.1"/>
      </dia:attribute>
      <dia:attribute name="numcp">
        <dia:int val="1"/>
      </dia:attribute>
      <dia:attribute name="line_width">
        <dia:real val="0"/>
      </dia:attribute>
      <dia:attribute name="start_arrow">
        <dia:enum val="1"/>
      </dia:attribute>
      <dia:attribute name="start_arrow_length">
        <dia:real val="0.5"/>
      </dia:attribute>
      <dia:attribute name="start_arrow_width">
        <dia:real val="0.5"/>
      </dia:attribute>
      <dia:attribute name="end_arrow">
        <dia:enum val="1"/>
      </dia:attribute>
      <dia:attribute name="end_arrow_length">
        <dia:real val="0.5"/>
      </dia:attribute>
      <dia:attribute name="end_arrow_width">
        <dia:real val="0.5"/>
      </dia:attribute>
    </dia:object>
    <dia:object type="Standard - Line" version="0" id="O6">
      <dia:attribute name="obj_pos">
        <dia:point val="19.05,17"/>
      </dia:attribute>
      <dia:attribute name="obj_bb">
        <dia:rectangle val="16.7966,16.6115;19.3647,18.9588"/>
      </dia:attribute>
      <dia:attribute name="conn_endpoints">
        <dia:point val="19.05,17"/>
        <dia:point val="17.1113,18.5702"/>
      </dia:attribute>
      <dia:attribute name="numcp">
        <dia:int val="1"/>
      </dia:attribute>
      <dia:attribute name="line_width">
        <dia:real val="0"/>
      </dia:attribute>
      <dia:attribute name="start_arrow">
        <dia:enum val="1"/>
      </dia:attribute>
      <dia:attribute name="start_arrow_length">
        <dia:real val="0.5"/>
      </dia:attribute>
      <dia:attribute name="start_arrow_width">
        <dia:real val="0.5"/>
      </dia:attribute>
      <dia:attribute name="end_arrow">
        <dia:enum val="1"/>
      </dia:attribute>
      <dia:attribute name="end_arrow_length">
        <dia:real val="0.5"/>
      </dia:attribute>
      <dia:attribute name="end_arrow_width">
        <dia:real val="0.5"/>
      </dia:attribute>
    </dia:object>
    <dia:object type="Standard - Line" version="0" id="O7">
      <dia:attribute name="obj_pos">
        <dia:point val="17,18.7"/>
      </dia:attribute>
      <dia:attribute name="obj_bb">
        <dia:rectangle val="16.5,8.54877;17.525,18.7012"/>
      </dia:attribute>
      <dia:attribute name="conn_endpoints">
        <dia:point val="17,18.7"/>
        <dia:point val="17.025,8.55"/>
      </dia:attribute>
      <dia:attribute name="numcp">
        <dia:int val="1"/>
      </dia:attribute>
      <dia:attribute name="line_width">
        <dia:real val="0"/>
      </dia:attribute>
      <dia:attribute name="start_arrow">
        <dia:enum val="1"/>
      </dia:attribute>
      <dia:attribute name="start_arrow_length">
        <dia:real val="0.5"/>
      </dia:attribute>
      <dia:attribute name="start_arrow_width">
        <dia:real val="0.5"/>
      </dia:attribute>
      <dia:attribute name="end_arrow">
        <dia:enum val="1"/>
      </dia:attribute>
      <dia:attribute name="end_arrow_length">
        <dia:real val="0.5"/>
      </dia:attribute>
      <dia:attribute name="end_arrow_width">
        <dia:real val="0.5"/>
      </dia:attribute>
    </dia:object>
    <dia:object type="Standard - Line" version="0" id="O8">
      <dia:attribute name="obj_pos">
        <dia:point val="17.025,28.55"/>
      </dia:attribute>
      <dia:attribute name="obj_bb">
        <dia:rectangle val="16.5,18.5987;17.525,28.5513"/>
      </dia:attribute>
      <dia:attribute name="conn_endpoints">
        <dia:point val="17.025,28.55"/>
        <dia:point val="17,18.6"/>
      </dia:attribute>
      <dia:attribute name="numcp">
        <dia:int val="1"/>
      </dia:attribute>
      <dia:attribute name="line_width">
        <dia:real val="0"/>
      </dia:attribute>
      <dia:attribute name="start_arrow">
        <dia:enum val="1"/>
      </dia:attribute>
      <dia:attribute name="start_arrow_length">
        <dia:real val="0.5"/>
      </dia:attribute>
      <dia:attribute name="start_arrow_width">
        <dia:real val="0.5"/>
      </dia:attribute>
      <dia:attribute name="end_arrow">
        <dia:enum val="1"/>
      </dia:attribute>
      <dia:attribute name="end_arrow_length">
        <dia:real val="0.5"/>
      </dia:attribute>
      <dia:attribute name="end_arrow_width">
        <dia:real val="0.5"/>
      </dia:attribute>
    </dia:object>
    <dia:object type="Standard - Line" version="0" id="O9">
      <dia:attribute name="obj_pos">
        <dia:point val="17.0125,13.625"/>
      </dia:attribute>
      <dia:attribute name="obj_bb">
        <dia:rectangle val="17.0083,13.125;20.0042,14.15"/>
      </dia:attribute>
      <dia:attribute name="conn_endpoints">
        <dia:point val="17.0125,13.625"/>
        <dia:point val="20,13.65"/>
      </dia:attribute>
      <dia:attribute name="numcp">
        <dia:int val="1"/>
      </dia:attribute>
      <dia:attribute name="line_width">
        <dia:real val="0"/>
      </dia:attribute>
      <dia:attribute name="start_arrow">
        <dia:enum val="1"/>
      </dia:attribute>
      <dia:attribute name="start_arrow_length">
        <dia:real val="0.5"/>
      </dia:attribute>
      <dia:attribute name="start_arrow_width">
        <dia:real val="0.5"/>
      </dia:attribute>
      <dia:attribute name="end_arrow">
        <dia:enum val="1"/>
      </dia:attribute>
      <dia:attribute name="end_arrow_length">
        <dia:real val="0.5"/>
      </dia:attribute>
      <dia:attribute name="end_arrow_width">
        <dia:real val="0.5"/>
      </dia:attribute>
      <dia:connections>
        <dia:connection handle="0" to="O7" connection="0"/>
      </dia:connections>
    </dia:object>
    <dia:object type="Standard - Line" version="0" id="O10">
      <dia:attribute name="obj_pos">
        <dia:point val="5,28.25"/>
      </dia:attribute>
      <dia:attribute name="obj_bb">
        <dia:rectangle val="5,27.75;15,28.75"/>
      </dia:attribute>
      <dia:attribute name="conn_endpoints">
        <dia:point val="5,28.25"/>
        <dia:point val="15,28.25"/>
      </dia:attribute>
      <dia:attribute name="numcp">
        <dia:int val="1"/>
      </dia:attribute>
      <dia:attribute name="line_width">
        <dia:real val="0"/>
      </dia:attribute>
      <dia:attribute name="start_arrow">
        <dia:enum val="1"/>
      </dia:attribute>
      <dia:attribute name="start_arrow_length">
        <dia:real val="0.5"/>
      </dia:attribute>
      <dia:attribute name="start_arrow_width">
        <dia:real val="0.5"/>
      </dia:attribute>
      <dia:attribute name="end_arrow">
        <dia:enum val="1"/>
      </dia:attribute>
      <dia:attribute name="end_arrow_length">
        <dia:real val="0.5"/>
      </dia:attribute>
      <dia:attribute name="end_arrow_width">
        <dia:real val="0.5"/>
      </dia:attribute>
    </dia:object>
    <dia:object type="Standard - Line" version="0" id="O11">
      <dia:attribute name="obj_pos">
        <dia:point val="20,12.35"/>
      </dia:attribute>
      <dia:attribute name="obj_bb">
        <dia:rectangle val="20,12.35;20,21.75"/>
      </dia:attribute>
      <dia:attribute name="conn_endpoints">
        <dia:point val="20,12.35"/>
        <dia:point val="20,21.75"/>
      </dia:attribute>
      <dia:attribute name="numcp">
        <dia:int val="1"/>
      </dia:attribute>
      <dia:attribute name="line_width">
        <dia:real val="0"/>
      </dia:attribute>
    </dia:object>
  </dia:layer>
  <dia:layer name="texto" visible="true">
    <dia:object type="Standard - Text" version="0" id="O12">
      <dia:attribute name="obj_pos">
        <dia:point val="8.6,28"/>
      </dia:attribute>
      <dia:attribute name="obj_bb">
        <dia:rectangle val="8.6,27.1737;11.0762,28.5025"/>
      </dia:attribute>
      <dia:attribute name="text">
        <dia:composite type="text">
          <dia:attribute name="string">
            <dia:string>#100mm#</dia:string>
          </dia:attribute>
          <dia:attribute name="font">
            <dia:font family="sans" style="0" name="Helvetica"/>
          </dia:attribute>
          <dia:attribute name="height">
            <dia:real val="1"/>
          </dia:attribute>
          <dia:attribute name="pos">
            <dia:point val="8.6,28"/>
          </dia:attribute>
          <dia:attribute name="color">
            <dia:color val="#000000"/>
          </dia:attribute>
          <dia:attribute name="alignment">
            <dia:enum val="0"/>
          </dia:attribute>
        </dia:composite>
      </dia:attribute>
    </dia:object>
    <dia:object type="Standard - Text" version="0" id="O13">
      <dia:attribute name="obj_pos">
        <dia:point val="15.75,26.2"/>
      </dia:attribute>
      <dia:attribute name="obj_bb">
        <dia:rectangle val="15.75,25.3738;18.4262,26.7025"/>
      </dia:attribute>
      <dia:attribute name="text">
        <dia:composite type="text">
          <dia:attribute name="string">
            <dia:string>#100 mm#</dia:string>
          </dia:attribute>
          <dia:attribute name="font">
            <dia:font family="sans" style="0" name="Helvetica"/>
          </dia:attribute>
          <dia:attribute name="height">
            <dia:real val="1"/>
          </dia:attribute>
          <dia:attribute name="pos">
            <dia:point val="15.75,26.2"/>
          </dia:attribute>
          <dia:attribute name="color">
            <dia:color val="#000000"/>
          </dia:attribute>
          <dia:attribute name="alignment">
            <dia:enum val="0"/>
          </dia:attribute>
        </dia:composite>
      </dia:attribute>
    </dia:object>
    <dia:object type="Standard - Text" version="0" id="O14">
      <dia:attribute name="obj_pos">
        <dia:point val="15.755,11.125"/>
      </dia:attribute>
      <dia:attribute name="obj_bb">
        <dia:rectangle val="15.7288,10.2988;18.405,11.6275"/>
      </dia:attribute>
      <dia:attribute name="text">
        <dia:composite type="text">
          <dia:attribute name="string">
            <dia:string>#100 mm#</dia:string>
          </dia:attribute>
          <dia:attribute name="font">
            <dia:font family="sans" style="0" name="Helvetica"/>
          </dia:attribute>
          <dia:attribute name="height">
            <dia:real val="1"/>
          </dia:attribute>
          <dia:attribute name="pos">
            <dia:point val="15.755,11.125"/>
          </dia:attribute>
          <dia:attribute name="color">
            <dia:color val="#000000"/>
          </dia:attribute>
          <dia:attribute name="alignment">
            <dia:enum val="0"/>
          </dia:attribute>
        </dia:composite>
      </dia:attribute>
    </dia:object>
    <dia:object type="Standard - Text" version="0" id="O15">
      <dia:attribute name="obj_pos">
        <dia:point val="17.75,13.35"/>
      </dia:attribute>
      <dia:attribute name="obj_bb">
        <dia:rectangle val="17.75,12.5238;19.0763,14.8525"/>
      </dia:attribute>
      <dia:attribute name="text">
        <dia:composite type="text">
          <dia:attribute name="string">
            <dia:string>#50
mm#</dia:string>
          </dia:attribute>
          <dia:attribute name="font">
            <dia:font family="sans" style="0" name="Helvetica"/>
          </dia:attribute>
          <dia:attribute name="height">
            <dia:real val="1"/>
          </dia:attribute>
          <dia:attribute name="pos">
            <dia:point val="17.75,13.35"/>
          </dia:attribute>
          <dia:attribute name="color">
            <dia:color val="#000000"/>
          </dia:attribute>
          <dia:attribute name="alignment">
            <dia:enum val="0"/>
          </dia:attribute>
        </dia:composite>
      </dia:attribute>
    </dia:object>
    <dia:object type="Standard - Text" version="0" id="O16">
      <dia:attribute name="obj_pos">
        <dia:point val="13.655,20.275"/>
      </dia:attribute>
      <dia:attribute name="obj_bb">
        <dia:rectangle val="13.6287,19.4487;14.955,21.7775"/>
      </dia:attribute>
      <dia:attribute name="text">
        <dia:composite type="text">
          <dia:attribute name="string">
            <dia:string>#50
mm#</dia:string>
          </dia:attribute>
          <dia:attribute name="font">
            <dia:font family="sans" style="0" name="Helvetica"/>
          </dia:attribute>
          <dia:attribute name="height">
            <dia:real val="1"/>
          </dia:attribute>
          <dia:attribute name="pos">
            <dia:point val="13.655,20.275"/>
          </dia:attribute>
          <dia:attribute name="color">
            <dia:color val="#000000"/>
          </dia:attribute>
          <dia:attribute name="alignment">
            <dia:enum val="0"/>
          </dia:attribute>
        </dia:composite>
      </dia:attribute>
    </dia:object>
    <dia:object type="Standard - Text" version="0" id="O17">
      <dia:attribute name="obj_pos">
        <dia:point val="17.755,16.775"/>
      </dia:attribute>
      <dia:attribute name="obj_bb">
        <dia:rectangle val="17.7287,15.9488;19.055,18.2775"/>
      </dia:attribute>
      <dia:attribute name="text">
        <dia:composite type="text">
          <dia:attribute name="string">
            <dia:string>#50
mm#</dia:string>
          </dia:attribute>
          <dia:attribute name="font">
            <dia:font family="sans" style="0" name="Helvetica"/>
          </dia:attribute>
          <dia:attribute name="height">
            <dia:real val="1"/>
          </dia:attribute>
          <dia:attribute name="pos">
            <dia:point val="17.755,16.775"/>
          </dia:attribute>
          <dia:attribute name="color">
            <dia:color val="#000000"/>
          </dia:attribute>
          <dia:attribute name="alignment">
            <dia:enum val="0"/>
          </dia:attribute>
        </dia:composite>
      </dia:attribute>
    </dia:object>
    <dia:object type="Standard - Text" version="0" id="O18">
      <dia:attribute name="obj_pos">
        <dia:point val="20.95,17.65"/>
      </dia:attribute>
      <dia:attribute name="obj_bb">
        <dia:rectangle val="20.95,16.8238;25.4262,20.1525"/>
      </dia:attribute>
      <dia:attribute name="text">
        <dia:composite type="text">
          <dia:attribute name="string">
            <dia:string>#Fonte
unidireccional
de radiação#</dia:string>
          </dia:attribute>
          <dia:attribute name="font">
            <dia:font family="sans" style="0" name="Helvetica"/>
          </dia:attribute>
          <dia:attribute name="height">
            <dia:real val="1"/>
          </dia:attribute>
          <dia:attribute name="pos">
            <dia:point val="20.95,17.65"/>
          </dia:attribute>
          <dia:attribute name="color">
            <dia:color val="#000000"/>
          </dia:attribute>
          <dia:attribute name="alignment">
            <dia:enum val="0"/>
          </dia:attribute>
        </dia:composite>
      </dia:attribute>
    </dia:object>
    <dia:object type="Standard - Text" version="0" id="O19">
      <dia:attribute name="obj_pos">
        <dia:point val="6.65,11.75"/>
      </dia:attribute>
      <dia:attribute name="obj_bb">
        <dia:rectangle val="6.65,10.9238;10.9762,12.2525"/>
      </dia:attribute>
      <dia:attribute name="text">
        <dia:composite type="text">
          <dia:attribute name="string">
            <dia:string>#Tina de Água#</dia:string>
          </dia:attribute>
          <dia:attribute name="font">
            <dia:font family="sans" style="0" name="Helvetica"/>
          </dia:attribute>
          <dia:attribute name="height">
            <dia:real val="1"/>
          </dia:attribute>
          <dia:attribute name="pos">
            <dia:point val="6.65,11.75"/>
          </dia:attribute>
          <dia:attribute name="color">
            <dia:color val="#000000"/>
          </dia:attribute>
          <dia:attribute name="alignment">
            <dia:enum val="0"/>
          </dia:attribute>
        </dia:composite>
      </dia:attribute>
    </dia:object>
  </dia:layer>
</dia:diagram>
