[GreenKeys] For all the machinists out there...

[Richard Knoppow]

    I don't remember where I first saw this, perhaps in a book on 
optical illusions. It would be interesting to know its history. It may 
be one of M.C.Escher's pictures. A google search produced lot of 
illusory constructions:
https://www.google.com/search?q=optical+illusions+impossible+constructions&client=ubuntu&hs=pf8&channel=fs&tbm=isch&tbo=u&source=univ&sa=X&ved=0ahUKEwjI_6jb3qvQAhWBaSYKHW8xC6IQsAQIIw&biw=1366&bih=628

  Also see: https://en.wikipedia.org/wiki/Impossible_trident

On 11/15/2016 6:58 AM, Dave Horsfall wrote:
> I haven't seen this pic for over 40 years...  One of our school
> assignments was to draw it, but thankfully we didn't have to make it :-)
>
> http://www.moillusions.com/instructions-from-hell/
>

-- 
Richard Knoppow
1oldlens1 at ix.netcom.com
WB6KBL