Photoplethysmography (PPG) is an optical sensing technique that measures blood volume changes and underpins devices ranging ...

Sunglasses, to most folks, are functional as well as fashionable, but to an angler, they’re a bit more—especially when those shades are the best polarized sunglasses you can find. Most fishermen learn ...

A new mechanism steers diodes made of a single enantiomer to emit light of right- and left-handed polarizations ...

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Forget LEDs, researchers from the University of Michigan have developed a new type of incandescent light bulb. The device is capable of emitting elliptically polarized light, described as "twisted" ...

Polarized dermatoscopes offer superior image quality and ease of use but are significantly more expensive than nonpolarized ...

Generation of circularly polarized nonlinear signals from chiral metasurfaces with rotational symmetry under arbitrarily polarized excitation. Left and right circularly polarized light, where the ...

The photo showed the first image in polarized light of the supermassive black hole at the center of the Milky Way galaxy. However, it was not the first-ever image of the astronomical object. That was ...

Researchers at Brown University have developed a wearable sensor that uses polarized light to improve the accuracy of ...