Brookhaven researchers have revealed that a laser beam can cast a shadow through nonlinear optical processes, challenging ...

A quirk in scientific 3D modeling has led to the discovery that laser light ... In their high-energy state, those electrons can absorb blue light from the second laser. The green laser beam thus ...

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 ...

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

From Lumie to Philips, we tried and tested the best sunrise alarm clocks, with wake-up lights to combat seasonal affective ...

Throughout the history of computing, the development of monitor technology has been pivotal in shaping the interaction between users and their machines. What began as clunky, cumbersome tubes has ...

Shadows are a natural consequence of opaque walls in an illuminated Universe. Light shines; photons travel until they hit an ...

"What started as a funny discussion over lunch led to a conversation on the ... laser increases the optical absorption of the blue illuminating laser beam, creating a matching region in the ...

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An air ambulance pilot has warned against the dangers of "reckless" laser pens after his aircraft was targeted while on the way back ...

It should be noted that blue light also affects something called gamma-aminobutyric acid (GABA), which is the main chemical ...