Quoting Graywolf <[EMAIL PROTECTED]>: > The opposite. High (or Extra, or Extreme) dispersion glass requires less > curvature to obtain the same dioter. In a prism the colors would be spread > farther. >
I'm no expert on this, but aren't you confusing refraction (refractive index) with dispersion? Dispersion being spreading, leading to softer images? Low dispertion would mean that a pinpoint stayed a pinpoint, high dispersion would mean a pinpoint spread to a soft blob. ------------------------------------------------------------ This email was sent from Netspace Webmail: http://www.netspace.net.au
