<div dir="ltr">It's called a retroreflector:<br><a href="http://en.wikipedia.org/wiki/Retroreflector" target="_blank">http://en.wikipedia.org/wiki/Retroreflector</a><br><br>Cheers,<br><font color="#888888">Zik</font><br>
<br><div class="gmail_quote">On Tue, Jul 29, 2008 at 10:48 AM, Naz Gassiep <span dir="ltr"><<a href="mailto:naz@mira.net">naz@mira.net</a>></span> wrote:<br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
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As I understand it, that is not possible. There is no geometry that can
reflect a path to its origin from any angle and any origin.<br><font color="#888888">
- Naz.</font><div><div></div><div class="Wj3C7c"><br>
<br>
hannah commodore wrote:
<blockquote type="cite">
<pre>Paul van den Bergen wrote:
</pre>
<blockquote type="cite">
<pre>if I understand correctly, NASA left a mirror on the moon
</pre>
</blockquote>
<pre>they did leave a refroreflector on the moon, but by design it only
reflects lasers back to the same location from where they came
<a href="http://en.wikipedia.org/wiki/Lunar_Laser_Ranging_Experiment" target="_blank">http://en.wikipedia.org/wiki/Lunar_Laser_Ranging_Experiment</a>
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</blockquote>
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