Ever wondered what four dimensions really mean? Discover why knots can’t exist in 4D space — and how mathematicians use cubes and clever analogies to understand higher dimensions.

Here’s what you’ll learn when you read this story: Theoretical physicists believe math shows the possibilities of a fourth dimension, but there’s no actual evidence—yet. Albert Einstein believed space ...

Reintroduction : View from the twenty-first century -- Augmenting a 1983 history of the fourth dimension in culture and art (1900-1950) : X-rays and ether physics as the context for the "fourth ...

As 3D printing continues to revolutionize manufacturing, researchers have decided that three dimensions are not enough, and so the concept of 4D printing has begun to emerge. These four-dimensional ...

We all know we live in three-dimensional space. But what does it mean when people talk about four dimensions? Is it just a ...