Refraction—the bending of light as it passes through different media—has long been constrained by physical laws that prevent independent control over how light waves along different directions bend.

A simple water drop can act like a lens, bending light through refraction in a clear optics demonstration.

Portland, Ore. — All natural materials bend electromagnetic radiation–from microwaves to visible light–in the same predictable direction: away from a line perpendicular to their surface, or away from ...

What color is the coronavirus? Conventional optical microscopes are unable to generate high-resolution, colored images of viruses and bacteria. Expensive equipment is used to view them in a more real ...