"Martin Gregorie" wrote in message
...
Big John wrote:
Mike

Make one for pennies and few Oz vs 2.2# and $139.95.

I did a search for info about Luneberg Lenses - found plenty of
definitions/explanations/units for sale but nothing on DIY Luneberg, how
to make a ball with a radially varying refractive index or sources of
materials with suitable refractive index gradations.


--
martin@ | Martin Gregorie
gregorie. | Essex, UK
org |

A corner reflector is easy and effective...

http://www.westmarine.com/webapp/wcs/stores/servlet/producte/10001/-1/10001/142806/0/0/radar%20reflector/All_2/mode+matchallpartial/0/0

If you make one out of foam core board and aluminium foil, be sure to keep
all the angles at 90 degrees. The overall shape can be whatever you want.


--
Geoff
The Sea Hawk at Wow Way d0t Com
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