This silicon chip creates dozens of laser beams from one source – and could reshape data centers

The technology hinges on what physicists call a frequency comb -- a laser that emits many distinct colors, or wavelengths, evenly spaced across the optical spectrum.
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Scientists create LED light that kills cancer cells without harming healthy ones

A new light-driven cancer therapy uses LEDs and tin nanoflakes to kill tumors safely and affordably. Developed by teams in ...