User talk:0x30114

Hello, you have reached 0x30114—please leave a message at the tone. &lt;BEEEEEEEEP/&gt; 0x30114 (talk) 13:42, 24 August 2009 (UTC)

Luneburg lens
Nice Luneburg lens diagram. Could you do a similar Maxwell's fish-eye? The ray paths would be &lt;g id="rays0"> &lt;path d="M 1 0 A 2.125     2.125      0 0 0 -1 0" /> &lt;path d="M 1 0 A 1.25      1.25       0 0 0 -1 0" /> &lt;path d="M 1 0 A 1.04166667 1.04166667 0 0 0 -1 0" /> &lt;/g> but I can't guess the law you used to map the refractive index to the opacity. The refractive index for the fish-eye is
 * $$n = \sqrt{\epsilon_r} = \frac{2}{1 + \left( \frac{r}{R}\right)^{2}}$$. --catslash (talk) 15:48, 27 September 2009 (UTC)

Sorry, I was being obtuse; the rule is: opacity = ln(εr). I will see if I can do this myself. --catslash (talk) 15:01, 2 October 2009 (UTC) Made a diagram of Maxwell's fish-eye myself. In the process I've moved your Luneburg diagram to the Commons - the reason for this was to take advantage of automated tools for handling licensing of derivative works. --catslash (talk) 02:17, 3 October 2009 (UTC)

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