Question: Can quantum phypics prove the existance of ghost ?

Michael Cook answered on 28 Jun 2012:

I’m not an expert on quantum physics, but I don’t think it can (although there is a LOT we don’t know about quantum physics).

Quantum physics is a way of trying to understand what happens in the universe in very, very extreme circumstances – at the tiniest levels of detail you can imagine, or at extremely high energy levels. The way we normally expect the world to work (which we call “classical mechanics”) suddenly stops describing what actually happens. Physicists developed these new ideas (“quantum mechanics”) to try and help describe why these strange events take place.

Plenty of people have tried to prove that ghosts exist, but no-one has managed to do so so far! Quantum mechanics is still pretty cool though – did you know it lets us send information completely secretly? It’s more powerful than the most complicated secret code you can think of!