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MOBIUS STRIP

 Take a strip of paper.  Give it a half twist and paste the ends.  It will look like a some twisted loop.  This is called mobius strip.

      Now take a pen and draw a line at the centre of the strip.  If you go on drawing the line, you will come and meet the starting point of the line.  This indicates that this object has only one side or surface.  That is , two surfaces have become one long surface.  

      Now take a scissor, start cutting in the middle of the strip.  At the end, you will not get two half loops but two loops linked like a chain.  These are some peculiar properties of a mobius strip.  But there are some applications for this strange strip.  

      It is used as a conveyor belt so that  both the surface will be used evenly and as a result the belt will lost longer.  In computer printer, typewriter ribbons, recording tapes, this strip is used to use both the sides efficiently.

      Today, it is used in nanotechnology also.      
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