Imagine walking into a math classroom. Everything is quiet, students are diligently writing and reading and thinking. You hear the rustle of paper, scratching pens, and the occasional student shifting ...

Imagine winding the hour hand of a clock back from 3 o’clock to noon. Mathematicians have long known how to describe this rotation as a simple multiplication: A number representing the initial ...

We experience the world in three spatial dimensions, but superstring theorists and mathematicians commonly work with many more. In this interactive, explore the mathematical meaning of extra ...