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Light

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

News

Technology

Thin reflective film that mimics butterfly wings can keep cars cool

News
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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Chemistry

Octopus-inspired ink changes colour when exposed to light

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A butterfly flies near to a light at night
Life

Slow motion footage reveals why insects are attracted to lights

Video

Technology

Incandescent lamp could save energy by recycling infrared light

News
Caption Illustration of the double-slit experiment, showing a plane wave (top left) passing through a screen with two gaps. The gaps act as new wave sources and the wavefronts bend to create two sets of circular waves radiating outwards. These two new waves create an interference pattern as they interact. At the point where a wave peak from one hits a wave peak from another, or a trough hits a trough, they reinforce each other; their magnitudes are summed. This is known as constructive interference. Where a trough hits a peak, they cancel each other out. This is known as destructive interference.

Physics

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

The double-slit experiment consists of light passing through two slits separated by a small space 鈥� now researchers have performed it with small gaps in time instead

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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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Health

Light exposure may be linked to several mental health conditions

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