For 60 years, physicists thought they knew exactly how coherent a laser could get. Now the ultimate quantum limit to laser coherence has been found, and it's much much bigger than anybody thought.
Duckweed is the perfect space food: small, fast-growing and nutritious. By studying how light levels changed the production of radiation-fighting antioxidants, researchers made it even better.
Twisted sound beams suggest an advanced civilisation may be able to harness immense amounts of power from a black hole.
Physicists can use bright, hot lasers to slow atoms down so much that they measure -459 degrees Fahrenheit.
To boost your immune defenses against corona and other viruses, one of the most effective things you can do is maintain your natural circadian rhythms. Here's how to do that.
A simple chemical reaction turns the red pigment of beets into a new, nontoxic blue dye.
Moths and insects cluster around lights at night. Why?
Long before Apple vs. Microsoft or Facebook vs. Google, there was Edison vs. Westinghouse.
Light bulbs can turn electricity into light (and a bit of heat) – an expert explains how they do it.
Just the tiniest bit of light can let you see in the 'dark.' Here's how your eyes do it.
Hardware could exploit the properties of scattered light so that computations happen at high speed and with low power consumption.
Indoor plant factories have high energy costs since LEDs replace the sunlight outdoor plants get for free. Scientists found a way to dial back how much light is needed by breaking it into tiny bursts.
Gravity exists because the universe is full of 'stuff' – here's how it came to be.
Most people are familiar with lasers. But what about a laser made with sound rather than light? A couple of physicists have now created one that they plan to use for measuring imperceivable forces.
Photons stream from the sun and interact with all matter on Earth. Depending on what the light touches, some of the photons will get absorbed or soaked up. And some will bounce back.
Nature can produce fractals, computers can, too. Could light be a fractal? The answer is yes.
Researchers have found a way to reduce light damage to artworks by up to 47% by optimising LEDs to prevent light from being absorbed by the artwork.
Everything you can touch is made of molecules – but feelings, sound and light are something different.
What colours we see depends not just on how things are in the world around us, but also on what happens in our eyes and our brains.
Despite the primacy of Christmas in American culture, the visibility of Hanukkah in pop culture reminds Jews that they have their own holiday in which they can take pride.