Can light itself cast a shadow? It may sound like a philosophical riddle, but researchers have found that under certain ...

The technique works because the green laser (wavelength 532 nanometers) changes the way the crystal responds to some other ...

This could enable new tech for controlling light with light, opening doors to advanced fabrication, imaging, and illumination ...

Imagine shining two flashlight beams through each other — neither one blocks the other. However, some 3D computer models of laser systems depict the laser beam as a cylinder. Those models give ...

The green laser increases the optical absorption of the blue illuminating laser beam, creating a matching region in the illuminating light and creating a darker area that appears as a shadow of ...

Light normally makes other objects cast shadows – but with a little help from a ruby, a beam of laser light can cast a shadow of its own. The crucial ingredient was a ruby cube. The researchers ...

Taylor Swift is an absolute mastermind when it comes to hiding Easter eggs in her lyrics and visuals, and the video for “Fortnight” is no exception. Now that the song has been nominated for ...

Taylor Swift is an absolute mastermind when it comes to hiding Easter eggs in her lyrics and visuals, and the video for “Fortnight” is no exception. Now that the song has been nominated for ...

Researchers create a visible shadow using only a laser beam, an achievement that seemingly defies conventional physics.

Are you a print subscriber? Activate your account. By Mark Pappas - 11 min 42 sec ago 52 min 1 sec ago By Garett Sloane - 2 hours 30 min ago By Tim Nudd - 3 hours 30 min ago By Ewan Larkin - 4 ...

Those who eat avocados might not be storing them correctly, which could lead to the tasty fruit going off quicker. While keeping avocados submerged in water has become a trendy online tip to ...