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light

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

Health

Light exposure may be linked to several mental health conditions

Multiple factors can contribute to different mental health conditions, but in the largest study of its kind, researchers suggest limited light exposure during the day or high levels of exposure at night may be involved

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Neutron stars

Space

Jet from neutron stars seems to travel seven times the speed of light

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A sleeping man and woman in bed

Health

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

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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

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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

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Han dynasty magic mirror

Physics

Secret images hidden in mirrors and windows using liquid crystals

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Optical equipment

Physics

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

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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 ‘split’ in two to create a weird new form of light

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Extreme Close-Up Of Human Eye

Health

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’s mitochondria, the powerhouses in cells, resulting in slight but lasting improvement to declining eyesight

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Life

Caterpillar populations decline 50 per cent in areas with streetlights

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People in Science

C. V. Raman

Physics

Laser pulses travel faster than light without breaking laws of physics

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Physics

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

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