Making sense of irrational numbers - Ganesh Pai

source: TED-Ed    2016年5月23日
View full lesson: http://ed.ted.com/lessons/making-sens...
Like many heroes of Greek myths, the philosopher Hippasus was rumored to have been mortally punished by the gods. But what was his crime? Did he murder guests or disrupt a sacred ritual? No, Hippasus's transgression was mathematically proving the hitherto unprovable. Ganesh Pai describes the history and math behind irrational numbers.
Lesson by Ganesh Pai, animation by Anton Trofimov.