Time-varying systems, materials with properties that change over time, have opened new possibilities for the experimental ...

Exploiting a novel technique called phase discontinuity, researchers have induced light rays to behave in a way that defies the centuries-old laws of reflection and refraction. The discovery has led ...

Students use mirror equations to determine the position and type. Students use mirror equations to determine the position, type, and size of mirror images for curved mirrors mathematically. Optical ...

At the interface between two facets of an artificial crystal, sound waves can be transmitted in the opposite direction to that expected, and undergo no reflection. Such wave behaviour could have many ...

Recently, a remarkable discovery has been made. Ancient Chinese scrolls, well-preserved and steeped in history, are shedding new light on our understanding of optics. These ancient texts suggest an ...

Refraction close refractionProcess by which a wave changes speed and sometimes direction upon entering a denser or less dense medium, eg a light ray changes direction when refracted by a lens. from a ...

The new design ' Liquid Glass ' was announced at the keynote speech of the annual developer conference ' WWDC25 ' held by Apple from 2:00 on June 10, 2025. Liquid Glass will be used in all Apple ...

Figure 1: Analytical study of one-dimensional chains of resonant point scatterers. Starting from this unit cell that creates the single negative property, we build two new configurations just by ...

A rainbow may appear as though it is a half circle, with the middle showcasing its colors across the blue landscape of the sky, however, this common weather phenomena completes itself.