Tagged With led

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If you're buying a TV this year — and it's a good year to buy a TV — then you have only a few choices to make before you've picked out a great screen. As well as working out whether you want 4K or HDR, and what screen size you're after in the first place, and what inbuilt smart features you want, your main choice is what TV backlighting technology you want your new big-screen telly to use. We're here to tell you the difference between edge-lit and back-lit LED, LCD and OLED, quantum dot and local dimming, and more.

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When you drop lasers and LEDs into liquid nitrogen, the lights cool down and start turning one colour into another. In the GIF above you'll see it start from a urine yellow to a Mountain Dew colour and then to a radiator fluid green and finally some super alien blood goo substance. It's great!

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The coolest water slide in the world and perhaps the universe is this black hole water slide in Bremerhaven, Germany's Bad 1 Water Park. The slide starts off completely dark and then lights up with colourful LEDs throughout the journey that make it seem as if you're travelling through some trippy wormhole or teleportation tunnel or something.

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Christmas lights are a uniquely American tradition. That's not just because the first electric Christmas lights appeared in America. The tradition embodies a certain American-ness, an ingenuity and hunger for innovation, that's easily overlooked. America doesn't just make things. America makes things spectacular.

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It's the Star Trek-inspired future we were promised — walls that glow and change colour, perhaps with just a gentle voice command. And it's finally (almost) possible thanks to a series of advances in OLED sheets. This new lighting solution also uses half as much energy than existing fluorescent lights. It is, however, pretty expensive.

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There's pretty good chance you have a piece of this year's physics Nobel prize-winning invention in your pocket. The blue light-emitting diode (LED) is found in the screens of millions of phones as well as our bright, new energy-efficient LED lightbulbs. Today, the Nobel Prize in physics was awarded to the three scientists who made this revolutionary discovery.