A closed door feels absolute. Light stays in one room, darkness settles in the next, and the boundary seems obvious enough to ...

Invisible infrared waves are emitted by IR LEDs and detected by photodiodes to enable devices like remotes, automatic ...

Quantum physics is the realm of the strange. And one of the strangest discoveries in the field is also one of the most fundamental: Particles fired at barriers with two slits in them can act like ...

Scientists have directly observed optical vortices—'dark points' in light waves—moving faster than light for the first time, confirming a long-standing prediction. The phenomenon does not violate ...

Researchers from Bar-Ilan University have successfully recreated key features of black hole physics in a laboratory setting ...

Light is both a wave and a particle – or so we have thought for about a hundred years. Since the advent of quantum physics, light has been understood to exhibit wave-particle duality. One part of this ...

Plasma, the fourth state of matter, consists of a gas in which electrons are no longer bound to atoms, which allows ...

An international team has demonstrated a new method for producing the most intense light ...

Scientists experimentally confirmed what we’ve known to be true for half a century—darkness can “travel” faster than light.

On a moon where rain falls as liquid methane and rivers carve channels through water ice, the lakes should not be this still.