Scientists have demonstrated that negative refraction can be achieved using atomic arrays -- without the need for artificially manufactured metamaterials. Scientists have long sought to control light ...

The work was published in Science ("Gate-tunable negative refraction of mid-infrared polaritons"). Basic principle of the “polariton transistor”. The van der Waals heterostructure is constructed by ...

I test a series of light experiments to explore reflection, refraction, and optical illusions, demonstrating how light behaves in surprising and educational ways. Trump removes nearly 30 career ...

On one hand, the speed of light is just a number: 299,792,458 meters per second. And on the other, it’s one of the most important constants that appears in nature and defines the relationship of ...