Share your voice Tags Now playing: Watch this: Originally published Feb. 26 at 10:36 p.m. PT.Updated Feb. 27 at 6:54 a.m. PT: Added response from WikiLeaks. At 8:18 a.m.: Added details from Cohen’s hearings on WikiLeaks. At 8:33 a.m.: Added Cohen’s remarks on the Twitter persona “Women for Cohen.” At 9:16 a.m.: Added Cohen comments on Trump’s Twitter account. At 9:44 a.m.: Added comments from lawmakers on WikiLeaks. At 11:16 a.m.: With details on Trump’s campaign involvement with RedFinch Solutions. “A lot of people have asked me about whether Mr. Trump knew about the release of the hacked Democratic National Committee emails ahead of time. The answer is yes,” Cohen said in his opening remarks.In the prepared testimony, Cohen recalled a time when Stone told Trump he had spoken with Assange days before “there would be a massive dump of emails that would damage Hillary Clinton’s campaign.”Cohen added that Trump responded, “Wouldn’t that be great.”WikiLeaks pushed back against the allegations on Twitter, writing that it has “always denied speaking to Roger Stone.”In a statement to multiple news outlets, including Newsweek, Stone refuted the account. “Mr. Cohen’s statement is not true,” he said.Rep. Elijah Cummings, a Democrat from Maryland and the Oversight and Reform Committee chair, said the hearing originally wouldn’t take questions on the subject. However, he said the committee wouldn’t restrict questions about WikiLeaks after the prepared remarks. Rep. Debbie Wasserman Schultz, who was chair of the DNC during the hack, questioned Cohen about details indicating Russian involvement with Trump’s campaign. “He had advanced notice that there was going to be a dump of emails, but at no time did I hear the specificity of what those emails were going to be,” Cohen told lawmakers, referring to the president.Rep. Jim Jordan, a Republican from Ohio, questioned Cohen on his credibility, pointing to a Twitter account, “Women For Cohen,” that the former attorney paid to tweet about his attractiveness. In response to the false persona on Twitter, Cohen laughed and smiled. He told Jordan, “We were having fun,” and said the Twitter account was a joke.The account was created by the IT firm RedFinch Solutions, which Cohen originally hired to rig results in online polls on Trump’s popularity. The firm used bots and algorithms to manipulate poll results for CNBC and Drudge at Trump’s direction, Cohen said.Cohen told lawmakers he feared for his family’s safety because of Trump’s immense influence on Twitter. Noting the president’s huge following — he has more than 58 million followers on the social network — Cohen said he was worried about Trump influencing people on social media to go after his loved ones. “When he goes on Twitter, and he starts bringing in my in-laws, my parents, my wife, what does he think is going to happen?” Cohen said. “He’s sending out the same message, that he can do whatever he wants.”On Wednesday morning, Trump tweeted to describe Cohen as a liar, and he isn’t the only politician attacking Cohen on the social network. Rep. Matt Gaetz, a Republican from Florida, tweeted at Cohen on Tuesday, threatening to blackmail him over infidelity. Gaetz has since deleted the tweet and apologized.Cohen said when Trump tweeted that he was a “rat” on Dec. 16, he was suddenly bombarded with hate messages on Twitter and Facebook.”I’ve had to turn over these messages to Secret Service because they are the most vile, disgusting statements that anyone can receive,” Cohen said.’Not fake news. Old news’Rep. Thomas Massie, a Republican from Kentucky, backed WikiLeaks’ argument that Assange had publicly announced the email leaks before Trump’s campaign learned about it. He held up a printout of an article from The Guardian, in which Assange said WikiLeaks had upcoming leaks regarding Clinton. “Mr. Assange reported to the media on June 12 that those emails would be leaked,” Massie said. “I’m not saying you have fake news, I’m saying you have old news.”The flood of Clinton campaign emails played a significant role in the election, both as headline news and the basis for internet conspiracy theories later on. The US government has since said those emails were given to WikiLeaks by Russian hackers attempting to sway the election in Trump’s favor.The testimony marks the first time someone from the president’s inner circle has testified that Trump had knowledge of the emails before they were released. Previously, Stone — who has been indicted for allegedly lying to Congress — denied those connections.The White House, in a statement to CNN, Newsweek and other publications, noted that Cohen is going to prison for lying. “Sadly, he will go before Congress this week and we can expect more of the same,” Press Secretary Sarah Sanders said. “It’s laughable that anyone would take a convicted liar like Cohen at his word, and pathetic to see him given yet another opportunity to spread his lies.”Representatives for the White House, Cohen and Stone didn’t immediately responded to requests for comment.Russian hackers stole hundreds of thousands of emails from the Clinton campaign and the Democratic National Committee, according to indictments from special counsel Robert Mueller’s investigation. The stolen emails were posted on WikiLeaks, as well as DCLeaks, a page Russian hackers created posing as Americans. The same day that Trump encouraged Russia to hack Clinton’s emails, Russian hackers made their first attempt to spear-phish email accounts from Clinton’s campaign.Below is the opening statement that Cohen submitted to the committee before his hearing. Hacking WikiLeaks Donald Trump 9 4:39 Comments Michael Cohen, President Donald Trump’s former lawyer, is set to publicly testify to Congress Wednesday. Getty Images President Donald Trump’s former attorney Michael Cohen testified that his boss had been aware of an adviser’s communications with WikiLeaks ahead of the release of damaging information about opponent Hillary Clinton’s campaign in 2016.In prepared testimony posted to the House Oversight and Reform Committee’s website, Cohen said that Roger Stone, Trump’s now-indicted adviser, had told the president about his communications with Julian Assange, the editor of WikiLeaks. Cohen is testifying publicly on Capitol Hill Wednesday. The hearing is being streamed live on CBS News. Politics Tech Industry Cohen says Trump knew about WikiLeaks’ dump
Share ALEX SMITH / WIKIMEDIA COMMONSMore than two weeks after the death of Border Patrol Agent Rogelio Martinez, questions remain about how he and a fellow agent were seriously injured while on patrol around Van Horn in west Texas.After the incident, prominent politicians wasted no time weighing in, saying the officers had been attacked. Sen.Ted Cruz called it a “stark reminder of the ongoing threat that an unsecure border poses to the safety of our communities.” President Donald Trump tweeted “We will, and must, build the wall!”The investigation was quickly taken over by the FBI, which steps in whenever there’s a potential assault on a federal officer. Since then, they’ve released few details on the case.Because this is a sensitive story, few people are willing talk about it on tape. But I did catch Rush Carter, who is with the Big Bend Border Patrol sector, where Martinez worked.“The lack of answers makes it really tough…as we move forward and have to take care of our jobs and mourn the loss of Agent Martinez all at the same time,” Carter says.He says agents are eager to hear exactly what happened that night. They’re patrolling as usual, albeit…”with a little bit of sadness in our heart… We still are waiting on the FBI to fill in the blanks because everything else is gonna be speculation.”And here’s been a lot of speculation. Almost immediately after Martinez died, politicians started tweeting condolences, and stating he’d been attacked. Governor Abbott said the agent was murdered and offered a reward to help catch the killer. Cruz and Trump also said Martinez was killed. Trump tweeted “We will seek out and bring to justice those responsible.”Around the same time, I talked to Chris Cabrera with the border patrol union.“What we understand from our agents that responded is Agent Martinez and his partner were struck repeatedly in the head and face with a rock or rocks by either one or a number of individuals,” Cabrera says.Here’s the thing: None of this has been confirmed by the FBI…nothing beyond Martinez and his partner having head injuries.At a press conference a few days after the incident, FBI Agent Emerson Buie chose his words carefully.“We are investigating this matter as a potential assault on a federal officer. And we’re trying to gather the facts. And if the facts support that then we will pursue it legally. If they support that the incident was caused by something else, then we’ll present that,” Buie said.The FBI representatives wouldn’t talk on tape for this story. But they did tell me they’re continuing to follow up on all tips from the public.The surviving agent working with Martinez that night hasn’t been named. Reportedly, he’s suffering from memory loss.And officials are raising doubts about those early claims that this was an attack. The Culberson County sheriff was one of the first responders on the scene. He’s said the evidence doesn’t point to violence – and that Martinez might have fallen to his death.So why, more than two weeks later, are there still so few answers? According to Victor Manjarrez, it’s not totally unusual. Manjarrez is a retired border patrol chief, now with the Center for Law and Human Behavior at UT El Paso.“What makes it so difficult in cases of border patrol agents and in this particular case in Van Horn is they’re so remote areas,” Manjarrez says.Plus, there weren’t any witnesses. Manjarrez says it’s also possible the scene was disturbed as first responders rushed in to help.“You come in and your first mindset’s…where’s that agent or officer that’s down? How can I render assistance?” he says, rather than thinking about preserving evidence for a future investigation.But what is more unusual about Agent Martinez’s death are those immediate statements from top politicians. Alfredo Corchado is covering this story for the Dallas Morning News. Corchado’s been reporting on the border for decades and says he’s never seen anything like this.“Where there’s a real rush to judgment. I think what shocked me from day one, from the moment it happened, was sense of certainty that this had happened, this was the way it happened…without any real factual information,” Corchado says.And that could explain why the FBI is being so cautious.“How do you come back after you have the governor of Texas, Greg Abbott, you have the senator Ted Cruz, you have President Trump, you know, with such certainty that this is what happened. I mean how do you contradict them? And I think the best way, at least from what I’m told, is you have to be 120 percent accurate. I mean you have to get to the truth,” Corchado says.One other possibility Corchado has heard from sources is that Agent Martinez and his partner might have been sideswiped by a tractor trailer. It’s a theory more people are considering, especially since the FBI announced late last week that they’re expanding their investigation. The FBI is now running digital billboards in four border states, seeking out drivers who passed through the Van Horn area the night both agents were injured. FBI officials say could take weeks or even months before they can issue a full report.
© 2014 Phys.org (left) Levitation and manipulation of particles. (right) Scooping up and holding particles. Credit: arXiv:1312.4006 [physics.class-ph] Laser tripod for better levitation Journal information: arXiv More information: Three-dimensional Mid-air Acoustic Manipulation by Ultrasonic Phased Arrays, arXiv:1312.4006 [physics.class-ph] arxiv.org/abs/1312.4006AbstractThe essence of levitation technology is the countervailing of gravity. It is known that an ultrasound standing wave is capable of suspending small particles at its sound pressure nodes. The acoustic axis of the ultrasound beam in conventional studies was parallel to the gravitational force, and the levitated objects were manipulated along the fixed axis (i.e. one-dimensionally) by controlling the phases or frequencies of bolted Langevin-type transducers. In the present study, we considered extended acoustic manipulation whereby millimetre-sized particles were levitated and moved three-dimensionally by localised ultrasonic standing waves, which were generated by ultrasonic phased arrays. Our manipulation system has two original features. One is the direction of the ultrasound beam, which is arbitrary because the force acting toward its centre is also utilised. The other is the manipulation principle by which a localised standing wave is generated at an arbitrary position and moved three-dimensionally by opposed and ultrasonic phased arrays. We experimentally confirmed that expanded-polystyrene particles of 0.6 mm and 2 mm in diameter could be manipulated by our proposed method. (Phys.org) —A trio of researchers with the University of Tokyo in Japan has expanded the science of sound wave levitation by adding more speakers and controlling the focal point of the waves that are created. In so doing, as they describe in their paper they’ve uploaded to the preprint server arXiv, they have created a means for levitating and moving objects in three dimensional space. Three-Dimensional Mid-Air Acoustic Manipulation The levitating device the team created is also very clean—it produces no noise that the human ear can hear and manipulating objects in three dimensional space is as easy as moving a joystick. It doesn’t of course herald in the age of hover-boards as seen in “Back to the Future,” but it definitely opens the door to new possibilities, limited only perhaps, by the amount of energy an application is willing to exert in order to levitate ever heavier objects. Scientists have come up with several ways to levitate objects—using compressed air, or magnetics, are just two examples—most such efforts have left a lot to be desired, however, when the goal has been clean (no noise, simple ways to move an object, etc.) levitation. That has led researches to investigate using ultrasonic waves. Up till now, researchers have been able to use the energy of sound waves to push an object from a surface up into the air, and then to hold it there. Because the object isn’t moved in any other direction, this type of levitation is considered two dimensional. In this new effort, the research team has taken the idea further by adding more speakers and a control mechanism that allows for moving the focal point of the sound waves generated. Objects are captured in the focal point and are then moved around by causing the focal point to be moved.In their experiments, the researchers first levitated and moved around very tiny Styrofoam balls. They demonstrated an ability to move the balls at will in virtually any direction—in tandem. Subsequent tests revealed that their apparatus was capable of levitating and moving tiny electric parts, a piece of wood and a metal nut. The nut was perhaps most impressive as it represented a much heavier object. The researchers explain that two of the speakers are used for levitation, while two more are used to move the focal point. Explore further Citation: Researchers use sound waves to levitate objects in three dimensions (2014, January 6) retrieved 18 August 2019 from https://phys.org/news/2014-01-levitate-dimensions.html This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no part may be reproduced without the written permission. The content is provided for information purposes only.