Applied physicists in the Harvard John A. Paulson School of Engineering and Applied Sciences (SEAS) have demonstrated a new ...

Imagine shining a flashlight into a material and watching the light bend backward—or in an entirely unexpected direction—as ...

Ray Optics often overwhelms Class 12 students due to formulas and sign conventions. An expert board examiner explains why ...

Stephenson, MD, FACS, shares insights on evolving LAL technology and best practices for managing the ocular surface before ...

MiSight® 1 day is approved for myopia control in more than 40 countries around the world, and is the first and only soft ...

From vision defects to rainbows and sky colour, here’s a quick-scoring, concept-based summary aligned with the CBSE dual exam system.

A team of scientists led by Academician Professor Xiang Zhang, President and Vice-Chancellor of The University of Hong Kong ...

The registrations for NEET 2026 have commenced. In order to appear for the MBBS entrance test, the candidates need to be well aware of the syllabus for the test. The National ...

In this quick science demo, I show how a simple glass of water can make arrows appear to change direction. As I pour water into a curved glass, I explain how refraction bends light and why the glass ...

Discover the limits of human sight: from a 3-mile horizon and candle flames 2.8 km away to seeing galaxies 2.5 million ...

Did you notice the stunning, colorful sight in the sky Monday morning? It wasn't a rainbow. It's called a sundog, a weather phenomenon that only happens when the conditions are just right. Stream NBC ...

Dispersion is an inherent feature of electromagnetic waves. It allows light to behave differently at different wavelengths, which can be useful, but it also creates chromatic aberrations. As bandwidth ...