Mobius strips have for long time fascinated mathematicians.
An example of a Möbius strip can be created by taking a paper strip and giving it a half-twist, and then joining the ends of the strip to form a loop.
If you draw a line along the length of this strip, it would return to its starting point having covered the entire length of the strip (on both sides of the original paper) without ever crossing an edge.
If you cut along this line you end up with a larger Mobius ring with even more twists.
Now draw another line along the middle of this strip till you end up at your starting point. Cutting along this line will give you two interlinked Mobius loops.
It was discovered independently by the German mathematicians August Ferdinand Möbius and Johann Benedict Listing in 1858
Artsits like Maurits Cornelis Escher made use of the Mobius effect in their art works.