<APPLET CODE="http://mathworld.wolfram.com/Live.class" CODEBASE="live" ARCHIVE="http://mathworld.wolfram.com/live.jar" ALIGN=MIDDLE WIDTH=300 HEIGHT=300 ALT="Fresnel surface"> <PARAM NAME="input_file" VALUE="http://mathworld.wolfram.com/fresnel.m"> <PARAM NAME="input_archive" VALUE="http://mathworld.wolfram.com/zip/fresnel.zip">
[Ctrl+A 全部选择 提示：你可先修改部分代码，再按运行]
A quartic surface given by

where

also known as Fresnel's wave surface. It was introduced by Fresnel in his studies of crystal optics. The image above shows one particular case of the Fresnel surface (JavaView).