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Light

Invisibility cloak

Technology

AI-designed invisibility cloak could hide small communication devices

Artificial intelligence has helped design an invisibility cloak. The cloak could hide communication devices from detectors that use microwaves or infrared light

News
Exposure to high levels of light at night may be linked to certain mental health conditions

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Light exposure may be linked to several mental health conditions

News
A sleeping man and woman in bed

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Some doses of blue light from screens may not affect your sleep

News
A beam of red light shines through a series of four lenses within a telescope-like device

Technology

Anti-laser can make any object suck in light

News
Fig. 2. Intensity and phase information of a simulated photonic toroidal vortex. a, Side view of three-dimensional iso-intensity profile of a photonic toroidal vortex. The colorful painting denotes the rotating spatiotemporal spiral phase ( ?r ,t ? ). The topological charge of the spiral phase is 1. The direction of local OAM density (jOAM) is marked with arrows. b, Front view of the iso-intensity profile of a photonic toroidal vortex

Physics

Whirlpools made of light can be twisted into the shape of a doughnut

News
Han dynasty magic mirror

Physics

Secret images hidden in mirrors and windows using liquid crystals

News
Optical equipment

Physics

A gas made from light becomes easier to compress as you squash it

News
MN6GWA iridescence on the surface of some soap bubbles illuminated from below

Life

How the shimmering secrets of iridescence could keep us cool

Features
Split photon

Physics

Photons could be 鈥榮plit鈥� in two to create a weird new form of light

News
Extreme Close-Up Of Human Eye

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Red light therapy could improve eyesight that has declined due to age

Exposure to deep red or near-infrared light can improve the function of the eye鈥檚 mitochondria, the powerhouses in cells, resulting in slight but lasting improvement to declining eyesight

News

Life

Caterpillar populations decline 50 per cent in areas with streetlights

News

C. V. Raman

Physics

Laser pulses travel faster than light without breaking laws of physics

News

Physics

Clouds of atoms trap light in a way that could store quantum data

News