View full lesson: http://ed.ted.com/lessons/what-is-a-vector-david-huynh

Physicists, air traffic controllers, and video game creators all have at least one thing in common: vectors. But what exactly are they, and why do they matter? David Huynh explains how vectors are a prime example of the elegance, beauty, and fundamental usefulness of mathematics.

Lesson by David Huynh, animation by Anton Trofimov.