Image 21 of 24:
<A HREF="../slides/Slide20.html">
<IMG
ALIGN=middle SRC="http://www.astro.umd.edu/~hamilton/icons/LeftArrow.gif">
<A HREF= "../index.html">
<IMG
ALIGN=middle SRC="http://www.astro.umd.edu/~hamilton/icons/info.gif">
<A HREF="../slides/Slide22.html">
<IMG ALIGN=middle SRC="http://www.astro.umd.edu/~hamilton/icons/RightArrow.gif"></A> 

img20.jpg <br><p>

<A HREF="../img20.jpg"><img src ="../thumbnails/mimg20.jpg"></a> 

<hr>
<h1>