In topology - the branch of mathematics where shapes are allowed to stretch, bend, twist, and shrink, but never tear or glue.
For a topologist, a coffee mug and a donut are essentially the exact same object!
When an object spins around its middle axis, even a tiny wobble keeps growing instead of dying out. Soon, the wobble becomes so big that the object flips over completely. Then the same thing happens again, so it keeps flipping back and forth. This is the Dzhanibekov effect.
Today, November 7th, marks the birth anniversary of Sir Chandrasekhara Venkata Raman, one of India's greatest scientific minds.
At the age of 41, he won the Nobel Prize in Physics for discovering the Raman effect, becoming the first Asian scientist to receive a Nobel Prize in the sciences.
When an object spins in zero gravity about its middle axis, the rotation is inherently unstable, and the object periodically flips 180 degrees mid-flight, a phenomenon known as the Dzhanibekov effect.
When an object spins in zero gravity about its middle axis, the rotation is inherently unstable, and the object periodically flips 180 degrees mid-flight, a phenomenon known as the Dzhanibekov effect.