Comments on: SCIENTIFIC TOY AIDS ADVERTISING STUNT (Jul, 1931) http://blog.modernmechanix.com/2008/05/31/scientific-toy-aids-advertising-stunt/ Yesterday's tomorrow, today. Fri, 10 Feb 2012 20:35:08 +0000 hourly 1 http://wordpress.org/?v=3.1.4 By: Slim http://blog.modernmechanix.com/2008/05/31/scientific-toy-aids-advertising-stunt/comment-page-1/#comment-1056314 Slim Mon, 02 Jun 2008 16:33:49 +0000 http://blog.modernmechanix.com/?p=4529#comment-1056314 Many years ago there was one of these in Disneyland. You could vary the speed and see the colors. Many years ago there was one of these in Disneyland. You could vary the speed and see the colors.

]]> By: jayessell http://blog.modernmechanix.com/2008/05/31/scientific-toy-aids-advertising-stunt/comment-page-1/#comment-1056260 jayessell Sun, 01 Jun 2008 19:00:53 +0000 http://blog.modernmechanix.com/?p=4529#comment-1056260 Benham's top. I painted half of the takeup reel of my reel to reel recorder black and when rewinding I did perceive a royal blue. Nice animation: http://www.michaelbach.de/ot/col_benham/index.html Benham’s top.

I painted half of the takeup reel of my reel to reel recorder
black and when rewinding I did perceive a royal blue.

Nice animation:
http://www.michaelbach.de/ot/col_benham/index.html

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