We live in a three-dimensional reality. Because of that, it’s pretty hard to imagine what a four-dimensional reality might be like, but that isn’t stopping physicists from trying to figure it out.

Two-dimensional experiments in 2018 showed evidence of four-dimensional existence. Electrons moved in two dimensions when influenced by a magnetic field, hinting at how a similar effect would ...

These observers experience a vastly different reality. From their perspective ... Their recent research in a four-dimensional spacetime builds on this foundation, illustrating that extended ...