(λ denotes the laser wavelength). Using this information, the position of the beam waist z0, the beam waist diameter dbw and the Rayleigh length zR can be calculated: Figure 2 shows an example of ...

The post shows a green laser beam projected over a body of water. It also includes a diagram showing how the distance between a straight laser beam and the water below should increase as the ...

A NASA spacecraft has beamed a near-infrared laser nearly 10 million miles into space breaking new ground for the agency. The laser, which is encoded with test data, was fired from NASA’s Psyche ...

This creates a channel full of charged electrons along the laser beam — and all those electrons attract lightning bolts, which seek the path of least resistance between the clouds and the ground.

CAPE CANAVERAL, Fla. — An orange tabby cat named Taters stars in the first video transmitted by laser from deep space, stealing the show as he chases a red laser light. The 15-second video was ...

"Light from a laser beam can reach a target almost instantly, thereby eliminating the need to calculate an intercept course, as interceptor missiles must do," CRS noted in its report. "By ...

A sufficiently high-intensity laser beam has a complicated relationship with the air it travels through. The changes it makes to the air help focus the laser, while the electrons it knocks loose ...

Can light itself cast a shadow? It may sound like a philosophical riddle, but researchers have found that under certain conditions, a laser beam can act like an opaque object and cast a shadow.

This continued until there were enough phonons to make up a laser-like beam. Several research groups had tested similar designs before. But Jing and his colleagues added an electrode right below ...