The idea that a hidden fourth dimension could be woven into everyday reality is no longer just a science‑fiction trope. Leading theorists now argue that extra dimensions are not only compatible with ...

The fourth dimension isn’t something we can perceive, but it can still be an important tool for physicists. Scientists from the University of Missouri used a 4D “synthetic dimension” to develop a ...

Consider a pencil lying on your desk. Try to spin it around so that it points once in every direction, but make sure it sweeps over as little of the desk’s surface as possible. You might twirl the ...