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Physicists have proposed a way to test quantum gravity that, in principle, could be performed by a laser-based, table-top experiment using currently available technology. Although a theory of quantum gravity would overcome one of the biggest challenges in modern physics by unifying general relativity and quantum mechanics, currently physicists have no way of testing any proposed theories of quantum gravity.

Now a team of seven physicists from various countries, S. Dey, A. Bhat, D. Momeni, M. Faizal, A. F. Ali, T. K. Dey, and A. Rehman, have come up with a novel way to experimentally test quantum gravity using a laser-based experiment. They have published a paper on their proposed test in a recent issue of Nuclear Physics B.

One reason why testing quantum gravity is so challenging is that its effects appear only at very high-energy scales and their corresponding tiny length scales. These extreme scales, which are very near the Planck scale, are roughly 15 orders of magnitude beyond those accessible by the Large Hadron Collider (LHC), by far the world’s highest-energy experiment.

Continue reading “Physicists propose test of quantum gravity using current technology” »

As fast as fiber optic lines have become, they’re still hamstrung by one key limitation: you still need to transmit that data over wires, which limits where you can transmit and the affordability of the fastest connections. Scientists may have a way to eliminate those cables while offering even faster speeds, though. They’ve discovered a way to ‘twist’ photons in a way that not only crams more data into each transmission, but survives interference from turbulent air. If you pass light through a special hologram, you can give photons an optical angular momentum that lets them carry more than just 1s and 0s — and so long as the light’s phase and intensity are right, you can reliably beam that data over long distances.

The research team successfully tested just such a link over a 1-mile stretch in Germany, making sure that it took place in an urban environment where the turbulence from taller buildings could theoretically cause chaos.

There’s still a lot of work to be done before this kind of wireless networking is practical. How do you serve a large number of people, and how is data affected by rain or snow? Still, it’s promising. The technology is clearly limited by the challenges of transmitting light (you couldn’t use this to transmit indoors, for obvious reasons), but it could be instrumental to the next generation of last-mile wireless networks. Instead of having to painstakingly wire homes and offices to achieve multi-gigabit speeds, internet providers could use light-based wireless links for large parts of their network and install cabling only when it’s absolutely necessary.

Continue reading “Twisted light could make wireless data faster than fiber” »

The Ocumetics Bionic Lens essentially replaces a person’s natural eye lens, given them the ability to see three times better than 20/20 vision. Though not yet available to the public, human trials are expected to begin on the lenses in July 2017.

Most of us take our vision for granted. As a result, we take the ability to read, write, drive, and complete a multitude of other tasks for granted. However, unfortunately, sight is not so easy for everyone.

Continue reading “Bionic Contacts: Goodbye Glasses. Hello Vision That’s 3x Better Than 20/20” »

https://youtube.com/watch?v=uzwMQB1Vw0I

Struggling to steer its economy away from oil dependence, Saudi Arabia announced an audacious plan to build a $500 billion super-city that is intended to become a world-class business hub.

Saudi Arabia is moving toward a “new generation of cities,” said Mohammed bin Salman, crown prince of the Middle Eastern kingdom, during one of his rare appearances before the press on October 24. The first of its kind, the city, to be named Neom, would be powered by green energy and have no room for “anything traditional,” he said.

Continue reading “‘New Generation of Cities’: Riyadh to Build High-Tech Utopia in the Desert” »

(Revised post)

Arab News, the official outlet of the Royal Saudis, proudly reported of Saudi Arabia being “the first country to grant a robot citizenship”. Below is a more sober account of this publicity stunt.

Continue reading “Saudi Arabia grants citizenship to robot Sophia” »

Science fiction is the siren song of hard science. How many innocent young students have been lured into complex, abstract science, technology, engineering, or mathematics because of a reckless and irresponsible exposure to Arthur Clarke at a tender age? Yet Arthur Clarke has a very famous quote: “Any sufficiently advanced technology is indistinguishable from magic.”

It’s the prospect of making that… ahem… magic leap that entices so many people into STEM in the first place. A magic leap that would change the world. How about, for example, having humanoid robots? They could match us in dexterity and speed, perceive the world around them as we do, and be programmed to do, well, more or less anything we can do.

Such a technology would change the world forever.

Continue reading “Amazon Is Quietly Building the Robots of Sci-Fi—Piece” »

Could a quantum computer find the Higgs boson faster than humans?

Foot soldiers for years have watched as wars in the air have been transformed by the introduction of drones. Now ground troops are starting to enjoy some of the same benefits.