For years, quantum entanglement was described as something that happens in an instant. Two particles interact, and suddenly they behave like a single shared system, no matter how far apart they are.

Light is an unusually rich carrier of information. Its direction of travel, wavelength, and polarization can all be used to ...

Physics is the search for and application of rules that can help us understand and predict the world around us. Central to physics are ideas such as energy, mass, particles and waves. Physics attempts ...

During the present economic turmoil it may be tempting to make an analogy between energy and money — not least as a reminder that neither can be generated arbitrarily. Few physicists nowadays would ...