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Articles sur Light

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Example of nonlinear effect which can be observed in an optical fiber. All the colors of the rainbow are generated at the output while only one color is present at the entrance. We’re talking about supercontinuum.

And suddenly, the dam broke, letting the grains of light gush forth…

To understand what is happening in an optical fibre, physicists can mimic a rupture of the flow of grains of light – the photons – thanks to a laser device.
Earth, shot from space, as it absorbs and reflects rays of light coming from the Sun - the same white-looking rays that give our sky its colour. NASA

Curious Kids: Why is the sky blue and where does it start?

Some people think the sky is blue because of sunlight reflected off the ocean and back into the sky. But that’s not the real reason.
Poul Henningsen’s Artichoke Lamp, viewed from below at London’s Park Plaza Hotel. Doc Searls/Wikimedia Commons

From the mundane to the divine, some of the best-designed products of all time

We asked five design experts – what’s your favorite product of all time, and why?
A visualisation of simulation data showing light successfully trapped at a standstill.

Hold it right there: how (and why) to stop light in its tracks

Freezing light in mid-air isn’t just the realm of Star Wars, as new research shows. But what do you do with the light once it’s trapped? One option is to use it to develop new forms of computers.
A new development could mean vastly increase data transfer over optical fibre cables. Shutterstock

Twisted light could dramatically boost internet speeds

The design of a new chip to detect the twisted nature of light waves could pave the way for next generation of optical communication technologies.
Drawing and reality: designing a metamaterial pattern. On the left is the plan; on the right is the actual object. Bossard/Penn State/Flickr

Beyond invisibility: engineering light with metamaterials

We are beginning to be able to control very precisely how light interacts with matter, creating opportunities for invisibility, soundproofing and even earthquake damage prevention.

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