Latest about light
Why do stars twinkle?
Stars appear to twinkle because the light from these distant objects passes through wobbly air in the atmosphere.
How do octopuses change color?
Octopuses are one of the most successful camouflaging animals in the world. But exactly how they pull off their rapid, high-resolution color changes is still a mystery.
Ultraprecise atomic optical clocks may redefine the length of a second
The length of a second hasn't been updated in 70 years, but ultraprecise atomic optical clocks are on track to change that.
Can anything travel faster than the speed of light?
Here's the science behind whether anything can travel faster than the speed of light.
Light pollution: Environmental impact, health risks and facts
Reference Discover the facts about light pollution and its impact on the environment and our health.
How do energy saving light bulbs work?
Reference Energy saving light bulbs: mechanics, efficiency and designs
Your pupils can count … sort of
New research suggests a person's pupil size can change based on the number of objects an individual observes in their visual field.
