More than 200 years ago, Count Rumford showed that heat isn’t a mysterious substance but something you can generate endlessly ...

Scientists get peacock feathers to emit laser light after adding dye and green pulses, revealing surprising biophotonic ...

Liquids and solutions are complex environments—think, for example, of sugar dissolving in water, where each sugar molecule ...

Ultrashort laser pulses—that are shorter than a millionth of a millionth of a second—have transformed fundamental science, ...

A new discovery shows that messy, stray light can be used to clean up quantum systems instead of disrupting them. University ...

PowerLight Technologies has completed development and testing of a new wireless power system that uses lasers to recharge ...

Japan has deployed a system that fires laser beams with 100 kilowatts of energy — powerful enough to disable small drones. It was installed on board a 6,200-ton (6.3 million kg) warship.

A scalable nanofabrication method uses electric-field alignment and picosecond laser welding to imprint patterned silver ...

Learn more about whether Cognex Corporation or nLIGHT, Inc. is a better investment based on AAII's A+ Investor grades, which compare both companies' key financial metrics.

Ultrashort bursts of laser light are giving scientists a way to freeze one of chemistry’s most elusive moments, the instant ...

Dermatologists explain the science behind wildly popular treatments like red light therapy, which is now available at home—for a steep price. Full-face LED masks like this one can cost up to several ...

If you have redness that lingers for longer than a couple of weeks, or have temporary darkening or lightening of pigment ...