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light

Definition

Seasonal affective disorder (SAD)

Seasonal affective disorder (SAD) may be caused by a lack of sunlight during the winter months. Its symptoms are similar to other forms of depression and it may be treatable via lifestyle measures and light therapy

Technology

Extremely thin lightweight lenses take amazing images of the universe

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Technology

Thin reflective film that mimics butterfly wings can keep cars cool

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Gold nuggets - thin gold wafers can generate their own glow

Physics

Gold flakes glow when they are bathed in light and now we know how

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Physics

Quantum randomness of empty space can be controlled with a laser

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Sunlight coming out of the optical fibre

Physics

Sunlight could cool an atom to its coldest possible temperature

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Can recreating black holes in the lab solve the puzzles of space-time?

Physics

Can recreating black holes in the lab solve the puzzles of space-time?

Features

Octopus-inspired ink changes colour when exposed to light

Chemistry

Octopus-inspired ink changes colour when exposed to light

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A butterfly flies near to a light at night

Video

Slow motion footage reveals why insects are attracted to lights

Video

Technology

Incandescent lamp could save energy by recycling infrared light

A lighting device that reuses its infrared light to conserve energy is as efficient as some LED lights, which could contribute to fewer carbon emissions while retaining a natural glow

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Physics

Light interacts with its past self in twist on double-slit experiment

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Life

Prawn larvae conceal their eyes with reflectors to hide from predators

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Technology

Light-based computer could outpace traditional electrical chip designs

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Technology

AI-designed invisibility cloak could hide small communication devices

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