Abstract: Conical refraction (CR) is a phenomenon observed when light is transformed into a hollow slanted cone propagating along an optical axis of a biaxial crystal and emerges as a cylinder of ...

New York City will again honor the lives lost on 9/11 with the Tribute in Light display, shining beams of light into the sky that can be seen for dozens of miles. The 9/11 memorial display, which also ...

A Blood Moon happens during a total lunar eclipse, when Earth blocks the Sun's light and the Moon turns red because of the sunlight bending through Earth's atmosphere [Getty Images] Sky-watchers ...

If you're eyeing a low-blue-light PC monitor for late-night gaming sessions, you might want to wait for Lenovo's NaturaSynth concept, unveiled this week at IFA. I’m the deputy managing editor of the ...

Scientists just measured something that sounds impossible. When light passes through atoms, it can spend what appears to be less than zero time interacting with them. Yes, negative time. And no, this ...

Physicists at MIT recreated the double-slit experiment using individual photons and atoms held in laser light, uncovering the true limits of light’s wave–particle duality. Their results proved ...

A Quebec judge has given the go-ahead for the lawsuit brought forward by victims of the brainwashing experiments performed at the Allan Memorial Institute in Montreal. They say the experiments ...

Abstract: Hierarchical fuzzy systems (HFSs), as a type of deep-structured fuzzy model, exhibit strong expressive power, excellent scalability, high flexibility, and desirable interpretability, making ...

We independently select these products—if you buy from one of our links, we may earn a commission. All prices were accurate at the time of publishing. Disco balls aren’t just a whimsical, ...

For decades, scientists have used near-infrared light to study the brain in a noninvasive way. This optical technique, known as fNIRS (functional near-infrared spectroscopy), measures how light is ...

Is red light therapy the holy grail of holistic health remedies, or is it a scam? I took a deep dive to discover the benefits and drawbacks of this popular wellness practice. Aly Lopez was a writer on ...

University of Illinois Physics Professor Paul Kwiat and members of his research group have developed a new tool for precision measurement at the nanometer scale in scenarios where background noise and ...