Usually, scientific topics have very strange names that might not be so funny or attractive, but this isn’t the case of the Tennis Racket Theorem, also known as the intermediate axis theorem.
This subject is strictly linked to a very weird event a Russian Cosmonaut called Vladimir Dzanibekhov observed while in space in 1985. By removing a screw in the orbiting station during an experiment, he made it turn around an axis, but suddenly the bolt started to change the direction of rotation by itself, without any external help. He was really surprised, and the event took its name after the scientist: the Dzanibekhov Effect.
But what is the link with the Tennis racket Theorem? Have you ever tried to flip a phone or a racket? Isn’t there something really strange and inexplicable? Have you noticed it? Well, if not, this video will introduce you to the bizarre behavior of rotating objects. Did you know that the flipping of a little bolt was able to scare scientists to death, suggesting a possible ending of human life on Earth? Do you want to know more about that? Stick with me and I’ll tell you everything in a moment.

Some puzzling questions have been already made, but in order to give an appropriate answer to all of them it’s surely better to start from something that has been discovered many years ago.
Classical physics, primarily created by Newton in the sixteenth century, was the most important field of research in science until the late 19th century.


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Credits: Ron Miller, Mark A. Garlick / MarkGarlick.com
Credits: Nasa/Shutterstock/Storyblocks/Elon Musk/SpaceX/ESA/ESO/ Flickr

Video Chapters:
00:00 Intro
01:29 Classical physics
05:47 Euler's equation
12:00 Conclusion

#insanecuriosity #earth #tennisrackettheory