Half a croissant, on a plate, with a sign in front of it saying '50c'
h a l f b a k e r y
Clearly this is a metaphor for something.

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Wheel display

 Display messages, pictures and logos on hubcaps or spokes
 
(0) 		  [vote for,
against]

This uses a rotating bank of LEDs like the rotating displays.

This device is mounted on a wheel with the circuitry counterbalancing the lights. A coil mounted on the rim passes a fixed magnet on the fender or fork that tells both allows the device to orient the image the right way up and also provides power.

NB/ This is a novel gimmick or advertising display, but not something I'd put on a Bentley, so please no comments about looking silly.

—FloridaManatee, Jun 03 2004

Baked http://www.xenoline.com/hs.html
Thanks String Stretcher [senatorjam, Oct 04 2004, last modified Oct 21 2004]

spinning disk mechanical tv http://www.tvhistor...%20TV%20Picture.htm
1920's mechanical tv system used a blinking light behind a spinning metal disk with a spiral of holes drilled in it. [macrumpton, Oct 04 2004, last modified Oct 21 2004]

[link]






       It would also be illegal to use whilst driving (on public roads), but i can see this appealing to the neds! The idea gets a (-), but as a marketable product it's a (+).
—MikeOliver, Jun 03 2004
   

       You could put it on a bicycle.
—FloridaManatee, Jun 03 2004
   

       This would look silly. Imagine how much it would ruin the look of a lovely Bentley.   

       (Sorry, couldn't resist)
—dobtabulous, Jun 03 2004
   

       If so, I wasn't around and my search didn't bring it up. If someone posts a link, I'll happily delete the idea.
—FloridaManatee, Jun 03 2004
   

       I made something similar to this in 1976 for an art school project. I attached a row of 75 leds to a spinning arm activated by a row of contacts that skated on a glass disk. On the disk I could make designs in adhesive copper foil that would be reproduced in the leds light.   

       Since then I have seen frisbees and other flying toys that used a similar concept as well a clock that showed the time using an oscillating wand that had leds on it.   

       The whole concept is very similar to the early experimental tvs that used a blinking light behind a spinning metal disk with a spiral of holes drilled in it. [link]
—macrumpton, Jun 04 2004
   
      
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