Can a single particle have a temperature? It may seem impossible with our standard understanding of temperature, but columnist Jacklin Kwan finds that it’s not exactly ruled out in the quantum realm ...

If a cup of water spills on the floor, the water can’t unspill—that is, it’s inconceivable that each water molecule would exactly reverse its course to slip back into the cup. To do so would be to ...

First comes cause, then comes effect – or does it? This order of events has previously been upended in the quantum realm, with the possibility of both A-causes-B and B-causes-A happening ...

New technologies are enabling scientists to tackle previously elusive physics problems. The macroscopic realm, which consists of everything from falling balls to orbiting planets, can be explained by ...

“You could say that the particles have no individual properties, they only have common properties,” explains Prof. Joachim Burgdörfer from TU Wien, shedding light on the mysterious phenomenon of ...