Transfixing tetrahedrons
![](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2014/01/notebook_mysterysolved.jpg?fit=860%2C460&ssl=1)
TWIRLING TWIST A whirling dervish creates mesmerizing shapes using the physics of Earth's spin.
Mehmetcan/Shutterstock
TWIRLING TWIST A whirling dervish creates mesmerizing shapes using the physics of Earth's spin.
Mehmetcan/Shutterstock