Caltech physicist Sean Carroll explains dimensions in ways that even a 5-year-old can understand.
Written by a grade-school teacher in 1884, it’s a novel narrated by a square who lives in a two-dimensional world called Flatland populated by lines and shapes.
Flatland is a great way to introduce kids to the concept of dimensions, a technical concept in physics and mathematics that defies our everyday notion of physical space.
Indeed, the novel is arguably one of the best introductions to this heady subject short of having Sean Carroll, a physicist at the California Institute of Technology, explain dimensions to you himself.
Learn why Sean Carroll thinks we all live on multiple worlds.
Carroll starts by introducing the concept of multiple dimensions to a nine-year-old with Tinkertoys and builds upon these simple concepts until you’re convinced you might be able to build an inter-dimensional wormhole if you really wanted to.