Classically, light can be thought of in two ways: either as a particle or a wave. But what is it really? Well, the ‘observer effect’ makes that question kind of difficult to answer. So before we get ...

Physicists have discovered a new formula that fully quantifies how quantum objects switch between wave-like and particle-like behaviors unlocking both deeper understanding and new applications in ...

Complementarity A new twist on the double-slit experiment. (Courtesy: Shutterstock/Andrey VP) One of the most counterintuitive concepts in physics – the idea that quantum objects are complementary, ...

The experiment Linköping University’s Joakim Argillander and Daniel Spegel-Lexne were part of the team that investigated the relationship between quantum uncertainty and wave–particle duality.

The double-slit experiment is one of the most famous experiments in physics and definitely one of the weirdest. It demonstrates that matter and energy (such as light) can exhibit both wave and ...