These are simple devices, with an infra-red emitter and a photo-transistor, both facing upwards, but work at an unusual wavelength. “These contain both emitters and detectors for 940nm wavelength,” ...
Formula 1 has seen countless drivers use their clothing to express themselves and build a personal brand that has stood the test of time. Alberto Ascari insisted upon wearing a light blue helmet ...
Previously restricted to the four walls of a facialist’s clinic, LED face masks have now fully broken into the mainstream, with an increasing array of skin-tech brands offering at-home light ...