# Paper folding

What happens when you fold a piece of paper in half and then do this repeatedly 50 times?

![folding a piece of paper](https://s3.amazonaws.com/img.courses.warmersun.com/progressandpredictions/paper+fold.png)

The thickness of a piece of paper is roughly 0.1mm.\
So when we fold it in half it becomes 0.2 mm

The Guinness world record of folding a paper is 12 times

[🔗 Guinness World Record for paper folding](https://www.guinnessworldrecords.com/world-records/494571-most-times-to-fold-a-piece-of-paper)

* Folding that piece of paper **30** times leads to 107km - about the thickness of the Earth's atmosphere.
* Folding it **40** times is 5 times the length of the Great Wall of China.
* **50** times is 0.75 times the Earth to Sun distance.


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