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Husker Report Card: Grading Nebraska's performance against WisconsinEnd of an era as Radio City tower hosts final live broadcast on Christmas eve
Wayne Rooney encourages I’m A Celeb viewers to vote for Coleen to do a trialThe bad news for Chicago Bulls vice president of basketball operations Artūras Karnišovas is that Patrick Williams is out for an undetermined length of time with inflammation in his surgically repaired left foot. The good news is Karnišovas will get to see more of his latest project, Matas Buzelis, who figures to get more minutes as Williams rests his swollen foot. As the Bulls prepared to play the Memphis Grizzlies on Saturday at the United Center in the second game of back-to-backs, the Buzelis buzz was growing, albeit at a low frequency. With Julian Phillips also sidelined Saturday with an illness, someone joked it was turning into “the Matas Buzelis Show.” “Maybe,” coach Billy Donovan said. “I’m here for the whole five positions.” With Williams and Phillips out, Donovan said he would have to utilize more of his bench against the Grizzlies as the Bulls attempted to win back-to-back games for the first time. Karnišovas gave Williams a five-year, $90 million extension in June, showing confidence Williams eventually would blossom into the player the Bulls envisioned when they selected him with the fourth pick in the 2020 draft. Williams was a 19-year old who didn’t start for Florida State but was chosen for his athleticism and upside as a 6-8 forward who can handle the ball. “Long arms, big hands,” Karnišovas said then. “Such an upside and potential. He can play from one through five. Played point guard in high school. Humble kid that is mature beyond his years. This is what the NBA is today.” Williams insisted Friday that he could’ve played if needed, but the Bulls aren’t likely to rush him back so soon into the season. Donovan talked about a “logjam” at the position before Williams’ injury, suggesting Buzelis and Phillips would benefit with more minutes. But instead of starting one of the two on Friday in the 136-122 win over the Atlanta Hawks, Donovan opted for a four-guard lineup, adding Ayo Dosunmu to starters Zack LaVine, Coby White and Josh Giddey. The Bulls’ Matas Buzelis gestures after making a 3-pointer in the third quarter against the Hawks in an NBA Cup game on Nov. 22, 2024, at the United Center. Buzelis scored nine points in the Bulls’ 136-122 win. (Geoff Stellfox/Getty) Still, Buzelis was on the court for two long stretches, scoring nine points with two blocks in 20 minutes while sinking a corner 3 and converting two dunks, including one that brought the house down in the first quarter. LaVine said he told the 20-year-old rookie to keep it up and not to worry about missing shots. “He athletically helps us just from being on the court and playing multiple positions,” LaVine said. Donovan liked the rim protection and the offensive part of Buzelis’s game but added the 6-9, 196-pound rookie needs to understand the realities of going into the paint in the NBA. “When he’s going to the basket, there are going to be people putting bodies in the way,” Donovan said. “And sometimes Euro-stepping leads you into some of those charges. These are things I think he’ll learn.” Related Articles Chicago Bulls | Column: Chicago Bulls are on pace for the worst defensive season in franchise history. Can it be fixed? Chicago Bulls | NBA urges players to take additional precautions to secure their homes following high-profile burglaries Chicago Bulls | ‘I’m being true to myself.’ How Zach LaVine strives for success through selflessness with the Chicago Bulls. Chicago Bulls | 6 takeaways as the Chicago Bulls lost to the Milwaukee Bucks — but won the minutes without Giannis Antetokounmpo Chicago Bulls | Patrick Williams is sidelined again with pain in the same foot — but Chicago Bulls aren’t panicking yet Hopefully those lessons will be learned now, as the 7-10 Bulls have nothing to lose by letting him play and seeing what they’ve got. They’re one trade away from being an official rebuild, and LaVine looks healthier and more tradeable than at any point in 2023-24. The anticipation whenever the ball found its way into Buzelis’s hands Friday was palpable to those of us sitting in the stands, which includes the local media not employed by the Chicago Sports Network. Chairman Jerry Reinsdorf took away the courtside press seating last year in a blatant money grab, similar to what he did at Sox Park many years ago. Anyway, it was obvious Friday that Bulls fans appear desperate for something new and exciting after years of watching the same old thing. Fair or not, Buzelis is going to have to succeed for Karnišovas’s reputation, not to mention for fans’ sanity. But until then, the Bulls will probably be content to ride LaVine as long as they can and look to the future at the trade deadline. White, Dosunmu and Williams will all be part of it, but the rest of the cast is unknown. Karnišovas’s widely panned acquisition of Giddey from the Oklahoma City Thunder for energizer Alex Caruso hasn’t been as one-sided as expected because of Caruso’s poor early-season shooting. Still, Giddey’s defensive play is so sketchy Donovan has been closing tight games with Dosunmu, making Giddey a bystander, literally and figuratively. Dosunmu, growing in confidence daily, has been up for the task. Without Lonzo Ball available , he’s easily their best perimeter defender. “You always want to help the team close a win,” Dosunmu said. “That feels pretty good. We’ve got to do better as a team closing games out, but I like where we’re at. We can be better. We will be better.” They had better be better, or Karnišovas will be the one bearing the brunt of the blame. Bulls guard Ayo Dosunmu is fouled by the Hawks’ Dyson Daniels on a drive to the basket during the first half of an NBA Cup game on Nov. 22, 2024, at the United Center. (Charles Rex Arbogast/AP) Dosunmu took over ballhandling duties Friday, which seemed to calm down Giddey, a decent point guard who’s a good distributor and rebounder but has difficulty covering smaller, quicker guards. Giddey had 18 points, eight assists and six rebounds Friday with a plus-19 rating in one of his better overall performances. Donovan said the four-guard starting lineup will be predicated on matchups while Williams is out, but obviously he liked what he saw Friday as the Bulls shot a season-high 57%, including 19-for-43 (44.2%) from 3-point range. LaVine noted the fast pace of both teams on Friday, when the Bulls made 19 turnovers and still cruised to a win to even their NBA Cup record at 1-1. “There were a couple times I didn’t make it past half-court without getting back,” LaVine said with a laugh. “We’re sticking with the identity of what we’re trying to do — guys playing fast. You have to get in shape for it.” The message from Donovan is clear, albeit a little repetitive. “We have to run,” Donovan said. “We have to try to generate stuff in transition. We have to play fast. It’s just what we have to do. ... It gets bodies off of us, helps us get downhill, helps generate some 3s.” On nights like Friday, it’s something to see. But with the real grind of the NBA schedule just beginning, we’ll soon find out how much the Bulls have in their tank.WEST PALM BEACH, Fla. (AP) — An online spat between factions of Donald Trump's supporters over immigration and the tech industry has thrown internal divisions in his political movement into public display, previewing the fissures and contradictory views his coalition could bring to the White House. The rift laid bare the tensions between the newest flank of Trump's movement — wealthy members of the tech world including billionaire Elon Musk and fellow entrepreneur Vivek Ramaswamy and their call for more highly skilled workers in their industry — and people in Trump's Make America Great Again base who championed his hardline immigration policies. The debate touched off this week when Laura Loomer , a right-wing provocateur with a history of racist and conspiratorial comments, criticized Trump’s selection of Sriram Krishnan as an adviser on artificial intelligence policy in his coming administration. Krishnan favors the ability to bring more skilled immigrants into the U.S. Loomer declared the stance to be “not America First policy” and said the tech executives who have aligned themselves with Trump were doing so to enrich themselves. Much of the debate played out on the social media network X, which Musk owns. Loomer's comments sparked a back-and-forth with venture capitalist and former PayPal executive David Sacks , whom Trump has tapped to be the “White House A.I. & Crypto Czar." Musk and Ramaswamy, whom Trump has tasked with finding ways to cut the federal government , weighed in, defending the tech industry's need to bring in foreign workers. It bloomed into a larger debate with more figures from the hard-right weighing in about the need to hire U.S. workers, whether values in American culture can produce the best engineers, free speech on the internet, the newfound influence tech figures have in Trump's world and what his political movement stands for. Trump has not yet weighed in on the rift, and his presidential transition team did not respond to a message seeking comment. Musk, the world's richest man who has grown remarkably close to the president-elect , was a central figure in the debate, not only for his stature in Trump's movement but his stance on the tech industry's hiring of foreign workers. Technology companies say H-1B visas for skilled workers, used by software engineers and others in the tech industry, are critical for hard-to-fill positions. But critics have said they undercut U.S. citizens who could take those jobs. Some on the right have called for the program to be eliminated, not expanded. Born in South Africa, Musk was once on an a H-1B visa himself and defended the industry's need to bring in foreign workers. “There is a permanent shortage of excellent engineering talent," he said in a post. “It is the fundamental limiting factor in Silicon Valley.” Trump's own positions over the years have reflected the divide in his movement. His tough immigration policies, including his pledge for a mass deportation, were central to his winning presidential campaign. He has focused on immigrants who come into the U.S. illegally but he has also sought curbs on legal immigration , including family-based visas. As a presidential candidate in 2016, Trump called the H-1B visa program “very bad” and “unfair” for U.S. workers. After he became president, Trump in 2017 issued a “Buy American and Hire American” executive order , which directed Cabinet members to suggest changes to ensure H-1B visas were awarded to the highest-paid or most-skilled applicants to protect American workers. Trump's businesses, however, have hired foreign workers, including waiters and cooks at his Mar-a-Lago club , and his social media company behind his Truth Social app has used the the H-1B program for highly skilled workers. During his 2024 campaign for president, as he made immigration his signature issue, Trump said immigrants in the country illegally are “poisoning the blood of our country" and promised to carry out the largest deportation operation in U.S. history. But in a sharp departure from his usual alarmist message around immigration generally, Trump told a podcast this year that he wants to give automatic green cards to foreign students who graduate from U.S. colleges. “I think you should get automatically, as part of your diploma, a green card to be able to stay in this country," he told the “All-In" podcast with people from the venture capital and technology world. Those comments came on the cusp of Trump's budding alliance with tech industry figures, but he did not make the idea a regular part of his campaign message or detail any plans to pursue such changes.
December 23, 2024 This article has been reviewed according to Science X's editorial process and policies . Editors have highlightedthe following attributes while ensuring the content's credibility: fact-checked peer-reviewed publication trusted source proofread by University of Michigan Bright, twisted light can be produced with technology similar to an Edison light bulb, researchers at the University of Michigan have shown. The finding adds nuance to fundamental physics while offering a new avenue for robotic vision systems and other applications for light that traces out a helix in space. "It's hard to generate enough brightness when producing twisted light with traditional ways like electron or photon luminescence," said Jun Lu, an adjunct research investigator in chemical engineering at U-M and first author of the study on the cover of this week's Science . "We gradually noticed that we actually have a very old way to generate these photons—not relying on photon and electron excitations, but like the bulb Edison developed." Every object with any heat to it, including yourself, is constantly sending out photons (particles of light) in a spectrum tied to its temperature. When the object is the same temperature as its surroundings, it is also absorbing an equivalent amount of photons—this is idealized as " blackbody radiation " because the color black absorbs all photon frequencies. While a tungsten lightbulb's filament is much warmer than its surroundings, the law defining blackbody radiation—Planck's law—offers a good approximation of the spectrum of photons it sends out. All together, the visible photons look like white light, but when you pass the light through a prism, you can see the rainbow of different photons within it. This radiation is also why you show up brightly in a thermal image, but even room-temperature objects are constantly emitting and receiving blackbody photons, making them dimly visible as well. Typically, the shape of the object emitting the radiation doesn't get much consideration—for most purposes (as so often in physics), the object can be imagined as a sphere. But while shape doesn't affect the spectrum of wavelengths of the different photons, it can affect a different property: their polarization. Usually, photons from a blackbody source are randomly polarized—their waves may oscillate along any axis. The new study revealed that if the emitter was twisted at the micro or nanoscale, with the length of each twist similar to the wavelength of the emitted light, the blackbody radiation would be twisted too. The strength of the twisting in the light, or its elliptical polarization, depended on two main factors: how close the wavelength of the photon was to the length of each twist and the electronic properties of the material—nanocarbon or metal, in this case. Twisted light is also called "chiral" because the clockwise and counterclockwise rotations are mirror images of one another. The study was undertaken to demonstrate the premise of a more applied project that the Michigan team would like to pursue: using chiral blackbody radiation to identify objects. They envision robots and self-driving cars that can see like mantis shrimp , differentiating among light waves with different directions of twirl and degrees of twistedness. "The advancements in physics of blackbody radiation by chiral nanostructures is central to this study. Such emitters are everywhere around us," said Nicholas Kotov, the Irving Langmuir Distinguished Professor of Chemical Sciences and Engineering, director of NSF Center of Complex Particles and Particle Systems (COMPASS) and corresponding author of the study. Discover the latest in science, tech, and space with over 100,000 subscribers who rely on Phys.org for daily insights. Sign up for our free newsletter and get updates on breakthroughs, innovations, and research that matter— daily or weekly . "These findings, for example, could be important for an autonomous vehicle to tell the difference between a deer and a human, which emit light with similar wavelengths but different helicity because deer fur has a different curl from our fabric." While brightness is the main advantage of this method for producing twisted light—up to 100 times brighter than other approaches—the light includes a broad spectrum of both wavelengths and twists. The team has ideas about how to address this, including exploring the possibility of building a laser that relies on twisted light -emitting structures. Kotov also wants to explore further into the infrared spectrum. The peak wavelength of blackbody radiation at room temperature is roughly 10,000 nanometers or 0.01 millimeters. "This is an area of the spectrum with a lot of noise, but it may be possible to enhance contrast through their elliptical polarization," Kotov said. Kotov is also the Joseph B. and Florence V. Cejka Professor of Engineering, a professor of macromolecular science and engineering and a member of U-M's Biointerfaces Institute. Lu is an incoming assistant professor of chemistry and physics at the National University of Singapore. The device was built in the COMPASS Lab located at the North Campus Research Complex of U-M and studied at the Michigan Center for Materials Characterization. More information: Jun Lu et al, Bright, circularly polarized black-body radiation from twisted nanocarbon filaments, Science (2024). DOI: 10.1126/science.adq4068 Journal information: Science Provided by University of Michigan
Unlocking green hydrogen fuel supply chainsAP Business SummaryBrief at 2:10 p.m. ESTShohei Ohtani wins his third MVP and first in the NL following a historic offensive season with the Los Angeles Dodgers