In physics, the well-known observer effect describes how the act of measurement changes what’s being measured. An electron can’t be detected without interacting with a photon, yet that interaction ...

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 ...

Editor's foreword -- Painting : In the interrogative mode -- Four shades of white : Ha Chong Hyun among others -- Color and its names : Joseph Marioni's approximately monochromatic paintings -- The 1 ...