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 ...

A cartridge-based console project that blends Arduino fundamentals, retro gaming nostalgia, and modern maker tools.

The development of cheaper, more powerful lasers has always been a cause for excitement among hackers, and fiber lasers are ...

A loose wire on the ship Dali may have been responsible for the power outages that eventually led to the collapse of Baltimore's Francis Scott Key Bridge in 2024, according to the National ...

More than one-fifth of US electricity is used to power artificial lighting. Light-emitting diodes based on group III/nitride semiconductors are bringing about a revolution in energy-efficient lighting ...

Buying a monitor or TV has become a daunting task these days. When manufacturers aren’t branding their products with acronyms like QLED and OLED, they use confusing terms like mini-LED instead.

Banks typically charge for outgoing and incoming wire transfers. Fees range from $0 to more than $50. Many, or all, of the products featured on this page are from our advertising partners who ...

Lasers, LEDs and light sources are devices that create light. LEDs (light emitting diodes) convert an electrical current into light using spontaneous emission in optically active semiconductors.

We independently review everything we recommend. When you buy through our links, we may earn a commission. Learn more› by Wirecutter Staff Sore, wiped out, or stiff after workouts? We break down how ...

We independently review everything we recommend. When you buy through our links, we may earn a commission. Learn more› Blankets don’t have to be cleaned as often as sheets, but a proper wash a few ...