Tachometry, the measurement of the speed of spin of rotating objects, is a common application. Some of those objects, however, have quirky aspects that make them extra interesting, even scary. One ...

Cold laser therapy beams light energy at your skin to reduce pain and inflammation deep within an area of your body, like your knee. It’s used to treat knee pain from osteoarthritis (OA), as well as ...

I’ve got some bad news for you: Our eyes are not always reliable sources of information. If you’ve ever stepped back from a completed project and wondered why it doesn’t look right, it’s probably ...

If you need high-quality printing in a snap, a laser printer can produce clean, sharp prints in as little as a few seconds. But, after three weeks of testing each device, not all laser printers have ...

Choosing between hairless skin and full-on fuzz comes down to personal preference. But if you’re on the hairless side of the fence and also have an abundance of melanin, the best laser hair removal ...

As someone with pitch-black, thick body hair that seems to regrow within hours of shaving, I’ve always been tempted to bite the bullet and try laser hair removal. The idea of a semipermanent, ...

The age of the laser weapon is finally upon us. The United States Army has officially sent a pair of high-energy laser weapons overseas to defend American troops and US allies against enemy drones, ...

After decades of research and development, the U.S. military is officially using laser weapons in combat zones overseas. The U.S. Army recently disclosed that the service had not only deployed a pair ...