Researchers have developed a new method for rapid 3D imaging. Instead of having to scan repeatedly in 2D, the researchers proposed a one-scan technique that uses a light needle to process at depth and ...

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.

Physicists have directly tracked tiny points of darkness in laser light racing faster than light itself, without breaking Einstein’s rules. The new measurements show that these “dark points” in a ...