Laser light photons are created by the semiconductors ... “We think that marking barcodes and symbols on products will be one the first industrial applications,” says Yagyu.

Why are there atomic clocks but no nuclear clocks? After all, an atom's nucleus is typically surrounded by many electrons, so ...

The word laser usually conjures up an image of a strongly concentrated and continuous light beam. Lasers that produce such light are, in fact, very common and useful. However, science and industry ...

Scanners in the checkout and little pistol-shaped laser guns, too ... For some, they have become symbols of capitalism in its coldest form. They also often turn up in chilling sequences in ...

A new technique called 'femtosecond-fieldoscopy' developed by the Max Planck Institute enables the precise detection of ...

Instead of using a laser beam, LED printers employ a strip of light-emitting diodes (LEDs) to create the image on the drum. The rest of the process - using toner and fusing it to the paper - is ...

Holiday light projectors can cast everything from snowflakes and snowmen to laser light shows with a kaleidoscope of colors, so it’s easy to find a model that matches your aesthetic. Still ...

News moves fast, and there's not always time to untangle the complex forces driving the day's biggest stories. WSJ Explains breaks down big market moves, business and economic trends, and ...

A laser level can fix that. You wouldn’t fire up the circular saw without using a tape measure and square first, and you shouldn’t eyeball what plumb and level are, either. Sure, you could hang plumb ...

First performed by Thomas Young to demonstrate the wave nature of light, the experiment was later ... Enter LIGO, the Laser Interferometer Gravitational-Wave Observatory. The L-shaped detector ...

This compact short throw dishes out several surprises, most notable among them being its triple-laser light source. It uses separate red, green, and blue lasers to deliver exceptional brightness ...

The best color laser printers are a great investment that can save you time and money compared to cartridge-based inkjet printers. Laser printers use toner, which lasts a long time, delivering a ...