Jellby <jel### [at] M-yahoocom> wrote in news:3ffef8d2@news.povray.org:

> Among other things, Tor Olav Kristensen wrote:
> 
>>> The white bands in that image. A Mobius strip is a ribbon loop with
>>> a half twist, giving it one side.
>>> 
>>> http://mathworld.wolfram.com/MoebiusStrip.html
>> 
>> I was a bit surprised that you referred to them as
>> Moebius strips.
>> 
>> But then I saw that the Mathworld page you gave a
>> link to above mentions this specifically:
>> 

>> number of half-twists ... "
> 


> strip, it still has a definite inside and outside (when in the surface
> of the torus). 


Britannica has this definition of a Moebius strip:


identifying, or pasting together, the ends of a
rectangular strip after first having given one of
the ends a one-half twist."

And, of course, it also says this:

"This space exhibits interesting properties, such
as having only one side and remaining still in one
piece when split down the middle."


Tor Olav

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