China’s ambassador to the UK has urged the government to ignore external pressure over a politically and diplomatically charged decision to involve the Chinese firm Huawei in building the 5G communications network.
In China’s first official comments on the row, Beijing’s ambassador to London, Liu Xiaoming, urged the UK to make the “right decision independently” over the suppliers for the new network.
Huawei is at the centre of a Whitehall leak inquiry after details emerged of a National Security Council (NSC) meeting during which Theresa May approved giving Huawei a limited role supplying the 5G system.
Some senior cabinet ministers, now suspected of leaking the decision, were reportedly opposed to the move, a stance backed by security chiefs and the UK’s closest allies. The Trump administration is expected to urge the government to reconsider the decision.
The US and Australia have blocked Huawei from work on their own networks because of security concerns, some of which were reportedly raised by cabinet ministers at the NSC meeting about the firm’s involvement.
Writing in the Sunday Telegraph, Liu did not name the US, but the article was clearly aimed at urging the UK to resist pressure from Washington. He wrote: “Countries of global influence, like the UK, make decisions independently and in accordance with their national interests.
“When it comes to the establishment of the new 5G network, the UK is in the position to do the same again by resisting pressure, working to avoid interruptions and making the right decision independently based on its national interests and in line with its need for long-term development.”
Liu urged the UK to resist “protectionism” and added: “The last thing China expects from a truly open and fair ‘global Britain’ is a playing field that is not level.”
He said security concerns around the development of 5G were understandable because it was a new technology and “is not perfect”.
“The risks should be taken seriously but risks must not be allowed to incite fear. They can be managed, provided countries and companies work together,” he wrote.
“Huawei has had a good track record on security over the years, having taken the initiative to invest in a Cyber Security Evaluation Centre, which employs an all-British monitoring team. The company has been working hard to improve its technology and to enhance the security and reliability of its equipment.”
Six Conservative MPs, including Bob Seely, a member of the Commons foreign affairs committee, have written to the culture secretary, Jeremy Wright, with their concerns.
The letter said: “Having China anywhere near our communications systems poses structural risks about the level of Chinese influence in our society. Chinese law demands that Chinese firms work with the Chinese secret services.”
Responding to Liu’s article, Seely tweeted that China had “a bad record on hacking, IP theft and arguably using big data and AI against its own people”.
The manner in which details of the NSC discussion were leaked has prompted a major inquiry.
Members of the cabinet were expected to be summoned for interviews as part of the formal inquiry headed by the cabinet secretary and national security adviser, Sir Mark Sedwill.
Ministers and aides were reportedly issued questionnaires requiring them to explain where they were in the hours following Tuesday’s NSC meeting.
They were also said to have been asked to provide details of all mobile phones in their possession and whether they spoke to the Telegraph, which carried the original report about the Huawei decision.
Much of the attention has focused on five ministers who were said to have voiced objections to the Huawei decision – the home secretary, Sajid Javid; the foreign secretary, Jeremy Hunt; the defence secretary, Gavin Williamson; the international development secretary, Penny Mordaunt, and the international trade secretary, Liam Fox.
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An implantable device that produces energy using ultrasound
A team of researchers affiliated with several institutions in the Republic of Korea has developed a type of implantable device that produces energy using an external ultrasound source. In their paper published in the journal Science, the group describes their device, how it was built and how well it worked when tested on animal tissue.
The development of the pacemaker has undoubtedly saved many lives, but it also has risks for patients that have them implanted into their chests. The devices have to be replaced periodically, putting patients at risk of infection—there is also some degree of pain and irritation involved. For that reason, scientists have searched for ways to generate power inside the body, making batteries unnecessary. In this new effort, the researchers have designed a generator that produces power when exposed to an ultrasound source.
The generator designed by the researchers is a type of triboelectric generator. Such generators harvest energy from the triboelectric effect—where contact electrification occurs when two dissimilar objects touch and are then pulled apart—static electricity is an example of the triboelectric effect. The generator used by the team had two squares of material inside of it that were forced together when exposed to ultrasound. When the ultrasound signal was removed, the materials separated and a small amount of electricity was produced and captured in the generator. By repeating the process over and over in rapid succession, a constant stream of electricity was generated. The team also added other components to their device to allow for interfacing with other devices—and they had to make sure it could withstand being implanted into a living creature.
The researchers tested their generator by implanting it into some pig tissue at various depths and then firing ultrasound at it through the skin. They report that at depths of five millimeters, the generator produced electricity with a current up to 156 microamps and up to 2.4 volts. At depths of a centimeter, the generator was able to produce 98 microamps and 1.9 volts. The researchers note that if such agenerator could be used to run pacemakers and other implantable devices, patients could be spared the necessity of having to undergo surgery to have them replaced periodically.
Scientists reveal first-ever image of a black hole
Scientists on Wednesday revealed the first image ever made of a black hole, depicting its hot, shadowy edges where light bends around itself in a cosmic funhouse effect.
Assembling data gathered by eight radio telescopes around the world, astronomers created the picture showing the violent neighborhood around a supermassive black hole, the light-sucking monsters of the universe theorized by Einstein more than a century ago and confirmed by observations for decades.
It looked like a flaming orange, yellow and black ring.
“We have seen what we thought was unseeable. We have seen and taken a picture of a black hole. Here it is,” said Sheperd Doeleman of Harvard.
Read: New map of universe shows 300,000 more galaxies
Jessica Dempsey, a co-discoverer and deputy director of the East Asian Observatory in Hawaii, said it reminded her of the powerful flaming Eye of Sauron from the “Lord of the Rings” trilogy.
Unlike smaller black holes that come from collapsed stars, supermassive black holes are mysterious in origin. Situated at the center of most galaxies, including ours, they are so dense that nothing, not even light, can escape their gravitational pull.
This one’s “event horizon” the point of no return around it, where light and matter begin to fall inexorably into the abyss is as big as our entire solar system.
Three years ago, scientists using an extraordinarily sensitive observing system heard the sound of two much smaller black holes merging to create a gravitational wave, as Albert Einstein predicted.
The new image, published in the Astrophysical Journal Letters and announced around the world in several news conferences, adds light to that sound.
Outside scientists suggested the achievement could be worthy of a Nobel Prize, just like the gravitational wave discovery.
While much around a black hole falls into a death spiral and is never to be seen again, the new image captures “lucky gas and dust” circling at just far enough to be safe and seen millions of years later on Earth, Dempsey said.
Taken over four days when astronomers had “to have the perfect weather all across the world and literally all the stars had to align,” the image helps confirm Einstein’s general relativity theory, Dempsey said.
Einstein a century ago even predicted the symmetrical shape that scientists just found, she said. “It’s circular, but on one side the light is brighter,” Dempsey said.
That’s because that light is approaching Earth.
The measurements are taken at a wavelength the human eye cannot see, so the astronomers added color to the image. They chose “exquisite gold because this light is so hot,” Dempsey said. “Making it these warm gold and oranges makes sense.”
What the image shows is gas heated to millions of degrees by the friction of ever-stronger gravity, scientists said.
And that gravity creates a funhouse effect where you see light from both behind the black hole and behind you as the light curves and circles around the black hole itself, said astronomer Avi Loeb, director of the Black Hole Initiative at Harvard. (The lead scientists in the discovery are from Harvard, but Loeb was not involved.)
The project cost $50 million to $60 million, with $26 million of that coming from the National Science Foundation.
Johns Hopkins astrophysicist Ethan Vishniac, who was not part of the discovery team but edits the journal where the research was published, pronounced the image “an amazing technical achievement” that “gives us a glimpse of gravity in its most extreme manifestation.”
He added: “Pictures from computer simulations can be very pretty, but there’s literally nothing like a picture of the real universe, however fuzzy and monochromatic.”
“It’s just seriously cool,” said John Kormendy, a University of Texas astronomer who wasn’t part of the discovery team. “To see the stuff going down the tubes, so to speak, to see it firsthand.
The mystique of black holes in the community is very substantial. That mystique is going to be made more real.”
There is a myth that says a black hole would rip you apart, but Loeb and Kormendy said the one pictured is so big, someone could fall into it and not be torn to pieces. But the person would never be seen from again.
Black holes are “like the walls of a prison. Once you cross it, you will never be able to get out and you will never be able to communicate,” Loeb said.
The first image is of a black hole in a galaxy called M87 that is about 53 million light years from Earth. One light year is 5.9 trillion miles, or 9.5 trillion kilometers. This black hole is about 6 billion times the mass of our sun.
The telescope data was gathered by the Event Horizon Telescope two years ago, but it took so long to complete the image because it was a massive undertaking, involving about 200 scientists, supercomputers and hundreds of terabytes of data delivered worldwide by plane.
The team looked at two supermassive black holes, the M87 and the one at the center of our own Milky Way galaxy. The one in our galaxy is closer but much smaller, so they both look the same size in the sky. But the more distant one was easier to take pictures of because it rotates more slowly.
“We’ve been hunting this for a long time,” Dempsey said. “We’ve been getting closer and closer with better technology.”
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