Researchers have demonstrated high-efficiency mid-infrared grating waveguide structures fabricated via nanoimprint ...

Optical physics is the study of the fundamental properties of light and its interaction with matter. This includes classical optical phenomena such as reflection, refraction, diffraction and ...

Where the world is explained. Making sense of the big stories - looking behind the spin. Exploring the important questions about long-running stories and the latest global news. An honest, unvarnished ...

Human activities are causing world temperatures to rise, posing serious threats to people and nature. Things are likely to worsen in the coming decades, but scientists argue urgent action can still ...

The Media Show: Is the right of reply under threat? How social media is reshaping the right of reply in journalism.