We’re used to dealing with three physical dimensions and one extra dimension of time as we move through the Universe, but two teams of scientists have shown that a fourth spatial dimension could reach beyond the limits of up and down, left and right, and forwards and backwards.
As you might expect given this is bending the laws of physics, the experiments involved are partly theoretical and very complex, and touch on our old friend quantum mechanics.
By placing together two specially designed 2D setups, two separate teams of researchers — one in Europe and one in the US — were able to catch a glimpse of this fourth spatial dimension through what’s known as the quantum Hall effect, a certain way of restricting and measuring electrons.
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