This morning on BBC Radio 4, the mathematician Roger Penrose, physicist Basil Hiley, and philosopher Simon Saunders had a lively discussion about the “measurement problem in physics” with broadcaster ...

One of the most striking features of quantum physics is that certain properties cannot be measured at the same time. Every measurement may inevitably affect the object's physical state being ...

(via PBS Space Time) The mystery of what happens when we go from a superposition to a definite state is known as the Measurement Problem, and it’s arguably the most mysterious outstanding problem in ...

Quantum mechanics is a probabilistic theory that does not describe individual events. Yet when we perform a single measurement, we find a well-defined outcome. This apparent contradiction, known as ...

When it comes to understanding the Universe, scientists have traditionally taken two approaches in tandem with one another. On the one hand, we perform experiments and make measurements and ...

Quantum physics, celebrated for its predictive success, has also become notorious for being an inscrutable mass of paradoxes. One of the founders of the theory, Niels Bohr, stated that "those who are ...

One of the contentious hallmarks of quantum mechanics is that measuring a system cements it into a reality. Unobserved, a system of particles starts as a wavefunction existing simultaneously in a ...