X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: f996b,ef7a01654d0a7e04 X-Google-Attributes: gidf996b,public From: "Carl R. White" Subject: Re: Simply illusions Date: 1997/12/11 Message-ID: #1/1 X-Deja-AN: 297215981 References: <66bllo$fvj@newstoo.ericsson.se> <3489A50A.3628@slip.net> <3489CE22.5731@mpq.mpg.de> <3489E18E.4B0B@slip.net> <3489EB19.5413@mpq.mpg.de> <348A176F.1792@slip.net> <348B86B7.41C67EA6@on.spammer> <348C2498.6131@mpq.mpg.de> X-Sender: crwhite@dcsun3.comp.brad.ac.uk Organization: University of Bradford Reply-To: ...@comp.brad.ac.uk Newsgroups: alt.ascii-art On Mon, 8 Dec 1997, Andreas Freise wrote: > NOTE : This so-called impossible triangle > _____ > / /\ > / / \ > / / \ > / / /\ \ > / / / \ \ > / / /\ \ \ > / / / \ \ \ > / /__/____\ \ \ > / \ \ \ > /________________\ \ \ > \_____________________\ / Jugg and Grim > I've been thinking for around two years about this one, and I think it is a semi-possibility... Here are the steps for making it: 1. Take a piece of flexible material in the shape of a triangular prism: +------ must be equilateral! V _______.___________________________________________________________ /\ /|\ <--- about 30cm ---> \ / \ | about 3cm \ /____\___\|/____________________________________________________________\ " 2. Take one end, twist it through 120 degrees, and stick it to the other end (making a circle when viewed from above) (I tried this in ascii. I didn't manage it :) ) 3. Stretch the loop over 3 nails, arranged at the points of an equilateral triangle: O / \ / \ / \ / \ O <-- about 9.5cm --> O 4. Fiddle with it until it looks like the diagram at the top of this message... -- Carl R White | e-mail...: crwhite-@-comp.brad.ac.uk | finger...: crwhite-@-dcsun1.comp.brad.ac.uk | web......: http://www.student.comp.brad.ac.uk/~crwhite/ *** Anti-Spam: Header tampered with. Change '-@-' to '@' above. ***