<a href="#calcDt">calcDt</a> | 
<a href="#calcDr">calcDr</a> | 
<a href="#calcViscosity">calcViscosity</a><br>
<p>

These subroutines calculate various hydrodynamic properties.
<p>

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<a name="calcDt">
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<h4>&calcDt</h4>
<b>Summary:</b><br>
Calculates translational diffusion rates from hydrodynamics theory
<p>

<b>Usage:</b><br>
$Dt = &calcDt( "s", $eta, $temp_c, $a );<br>
or<br>
$Dt = &calcDt( "pe", $eta, $temp_c, $a, $b );<br>
or<br>
$Dt = &calcDt( "c", $eta, $temp_c, $a, $b );
<p>

<b>Description:</b><br>
$eta = viscosity of solvent<br>
$temp_c = temperature in celcius<br>
$a = length of the long axis<br>
$b = length of the short axis<br>
<p>
Calculate the translational diffusion rate of the following
hydrodynamical shapes:<br>
Sphere, "s"<br>
Prolate Ellipse, "pe"<br>
Cylinder, "c"
<p>
<b>Example:</b><br>

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<a name="calcDr">
<hr>
<h4>&calcDr</h4>
<b>Summary:</b><br>
Calculates rotational diffusion rates from hydrodynamics theory
<p>

<b>Usage:</b><br>
<p>

<b>Description:</b><br>
This function has yet to be implimented.
<p>

<b>Example:</b><br>

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<a name="calcViscosity">
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<h4>&calcViscosity</h4>
<b>Summary:</b><br>
Calculates solvent viscosity
<p>

<b>Usage:</b><br>
$vis = &calcViscosity( $temp_c, $fraction );
<p>

<b>Description:</b><br>
$temp_c = temperature in celcius<br>
$fraction = fraction of H2O vs D20, fraction=0 for 100% D2O 
and fraction=1 for 100% H2O
<p>

<b>Example:</b><br>

