Laser diodes are semiconductors that generate light and amplify it using repeated reflection or "optical feedback." Once the ...

Carnegie Mellon University's Professor Curtis Meyer and his research colleagues explore an uncharted world inside protons and ...

Mathematical equations have shaped our understanding of the universe, and these nine have played a key role in changing the world.

Emmy Noether showed that fundamental physical laws are just a consequence of simple symmetries. A century later, her insights ...