<!–Converted with LaTeX2HTML 2022 (Released January 1, 2022) –> <HTML lang="en"> <HEAD> <TITLE>Contents of The Default Medium</TITLE>
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=utf-8"> <META NAME="viewport" CONTENT="width=device-width, initial-scale=1.0"> <META NAME="Generator" CONTENT="LaTeX2HTML v2022">
<LINK REL="STYLESHEET" HREF="surfaces.css">
<LINK REL="next" HREF="node5_mn.html"> <LINK REL="previous" HREF="node3_mn.html"> <LINK REL="up" HREF="node1_mn.html"> <LINK REL="next" HREF="node5_mn.html"> </HEAD>
<BODY bgcolor="#ffffff" text="#000000" link="#9944EE" vlink="#0000ff" alink="#00ff00">
<H1><A ID="SECTION00130000000000000000"> The Default Medium</A> </H1>
<P> The default medium is the medium which surrounds and encompasses all of the objects in the scene; it is the ``air'' through which eye rays usually travel before hitting an object. The properties of the default medium may be modified through the use of the <TT>atmosphere</TT> keyword.
<P>
<BR>
<IMG
STYLE="height: 2.17ex; vertical-align: 176.55ex; " SRC="img14.png"
ALT="
">
<BR>
<P> <PRE> /* * Red sphere on a grey plane, with fog. */ eyep 0. -10. 2. atmosphere fog .8 .8 .8 14. 14. 14. plane 0 0 0 0 0 1 sphere diffuse 0.8 0 0 1.5 0 0 1.5 </PRE>
<P>
<HR>
</BODY> </HTML>