Explore further © 2010 PhysOrg.com Citation: New charging method could greatly reduce battery recharge time (2010, March 11) retrieved 18 August 2019 from https://phys.org/news/2010-03-method-greatly-battery-recharge.html This figure shows the fraction of non-intercalated lithium ions per time, with the different colors representing different amplitudes of the applied oscillating field (A = 5 kCal/mol). The denominator in the exponential is the average intercalation time in nanoseconds, showing that a larger amplitude field speeds up ion intercalation. Credit: Hamad, et al. Increasing Electric Car Battery Performance More information: Ibrahim Abou Hamad, M. A. Novotny, D. Wipf, and P. A. Rikvold. “A new battery-charging method suggested by molecular dynamics simulations.” Available at arxiv.org. Doi: 10.1039/b920970k.via: Technology Review (PhysOrg.com) — Part of the headache of having to constantly recharge batteries is not just how often they need to be charged, but also the time it takes to charge them. In a new study, researchers have proposed a charging method that could greatly reduce the charging time of lithium-ion batteries, which are used in everything from electronic devices to electric vehicles. The new method uses an additional oscillating electric field (besides the charging field) that should be capable of charging a lithium-ion battery in a fraction of the time compared with traditional methods. Researchers Ibrahim Abou Hamad from Mississippi State University and coauthors have developed the new charging method thanks to revolutionary developments in molecular dynamics simulations. In their study, the researchers simulated the lithium-ion battery-charging process by simulating the intercalation (i.e. “insertion”) of lithium ions into the battery’s graphite anode. Although intercalation is just one part of the charging process (along with diffusion), it dominates the charging time.In the charging process, lithium ions first diffuse within the battery’s electrolyte until they reach the graphite anode. At this interface, ions must overcome an energy barrier in order to be intercalated into the anode. In their simulations, Hamad and his team found that an additional oscillating electric field can lower this energy barrier, enabling lithium ions to intercalate more quickly into the anode. The oscillating field also increases the diffusion rate, which helps further reduce the overall charging time, albeit to a lesser extent.Specifically, when the scientists applied an oscillating square-wave field with a frequency of 25 GHz and an amplitude of 5 kCal/mol to the graphite sheets in the anode, the lithium ions intercalated into the graphite sheets within an average time of about 50 nanoseconds. By changing the amplitude of the oscillating wave, the researchers found that they could further improve charging time by lowering the energy barrier and speeding up intercalation. Their simulations showed that the dependence of the intercalation time on the amplitude is exponential, meaning that a small increase in amplitude leads to a large increase the intercalation speed, which offers the potential for very fast charging times. In the future, the researchers plan to further investigate the new method, including analyzing how changing the frequency of the oscillating field effects the charging time. They noted that the new method might provide an increase in battery power densities, as well. 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.
(PhysOrg.com) — For the first time, researchers have demonstrated that an LED can emit more optical power than the electrical power it consumes. Although scientifically intriguing, the results won’t immediately result in ultra-efficient commercial LEDs since the demonstration works only for LEDs with very low input power that produce very small amounts of light. More information: Parthiban Santhanam, et al. “Thermoelectrically Pumped Light-Emitting Diodes Operating above Unity Efficiency.” Phys. Rev. Lett. 108, 097403 (2012). DOI: 10.1103/PhysRevLett.108.097403Physics Synopsis © 2011 PhysOrg.com Darpa seeks new power dynamic for continuation of Moore’s Law An LED’s power conversion (wall-plug) efficiency varies inversely with its optical output power. Wall-plug efficiency can exceed 100%, the unity efficiency, at low applied voltages and high temperatures. Image credit: Santhanam, et al. ©2012 American Physical Society Journal information: Physical Review Letters The researchers, Parthiban Santhanam and coauthors from MIT, have published their study in a recent issue of Physical Review Letters.As the researchers explain in their study, the key to achieving a power conversion efficiency above 100%, i.e., “unity efficiency,” is to greatly decrease the applied voltage. According to their calculations, as the voltage is halved, the input power is decreased by a factor of 4, while the emitted light power scales linearly with voltage so that it’s also only halved. In other words, an LED’s efficiency increases as its output power decreases. (The inverse of this relationship – that LED efficiency decreases as its output power increases – is one of the biggest hurdles in designing bright, efficient LED lights.)In their experiments, the researchers reduced the LED’s input power to just 30 picowatts and measured an output of 69 picowatts of light – an efficiency of 230%. The physical mechanisms worked the same as with any LED: when excited by the applied voltage, electrons and holes have a certain probability of generating photons. The researchers didn’t try to increase this probability, as some previous research has focused on, but instead took advantage of small amounts of excess heat to emit more power than consumed. This heat arises from vibrations in the device’s atomic lattice, which occur due to entropy.This light-emitting process cools the LED slightly, making it operate similar to a thermoelectric cooler. Although the cooling is insufficient to provide practical cooling at room temperature, it could potentially be used for designing lights that don’t generate heat. When used as a heat pump, the device might be useful for solid-state cooling applications or even power generation.Theoretically, this low-voltage strategy allows for an arbitrarily efficient generation of photons at low voltages. For this reason, the researchers hope that the technique could offer a new way to test the limits of energy-efficiency electromagnetic communication. Explore further Citation: LED’s efficiency exceeds 100% (2012, March 5) retrieved 18 August 2019 from https://phys.org/news/2012-03-efficiency.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.
Explore further In a new paper, physicists Ahmed Farag Ali, Mir Faizal, and Barun Majunder have shown that, according to a new generalization of Einstein’s theory of gravity called “gravity’s rainbow,” it is not possible to define the position of the event horizon with arbitrary precision. If the event horizon can’t be defined, then the black hole itself effectively does not exist.”In gravity’s rainbow, space does not exist below a certain minimum length, and time does not exist below a certain minimum time interval,” Ali, a physicist at the Zewail City of Science and Technology and Benha University, both in Egypt, told Phys.org. “So, all objects existing in space and occurring at a time do not exist below that length and time interval [which are associated with the Planck scale]. As the event horizon is a place in space which exists at a point in time, it also does not exist below that scale.”When Ali talks about “all objects,” he literally means everything around us, including ourselves.”We also do not exist physically below that length and time interval,” he said. “However, for us, our house, our car, etc., it does not matter if we do not exist at any one point of space and time, as long as we exist beyond a certain interval. However, for the event horizon it does matter, and this causes the main difference in our calculations.”Gravity’s rainbow Gravity’s rainbow arises from attempts to develop a theory that combines both the theory of general relativity and quantum mechanics. To fully solve the problems related to black holes, or even the beginning of our universe, physicists require a theory of quantum gravity.”Even though no one has been able to discover such a theory, there are various candidates,” Ali said. “These include ideas like taking space and time as fundamentally discrete, or using some mathematical loops as a fundamental quantity to construct space and time, or even replacing particles by tiny strings, and many other exotic ideas. Journal information: Europhysics Letters (EPL) “What many of these models have in common is that it can be inferred from them that the energy of a particle cannot get as large as possible, but that there is a maximum energy that any particle can reach. This restriction can be easily combined with Einstein’s special theory of relativity, and the resultant theory is called the doubly special theory of relativity, or DSR.”As the physicists explain, it is possible to generalize DSR to include gravity, and this theory is called gravity’s rainbow. “General relativity predicts that the geometry of space and time curves in the presence of matter, and this causes gravity to exist,” Ali said. “Gravity’s rainbow predicts that this curvature also depends on the energy of the observer measuring it. So, in gravity’s rainbow, gravity acts differently on particles with different energies. This difference is very small for objects like the Earth. However, it becomes significant for objects like black holes.” Information paradoxThe point of the work is not simply to abolish one of the defining features of a black hole, but rather the results could resolve the 40-year-old black hole information paradox that began with work by Stephen Hawking back in the 1970s. At that time, Hawking proposed that black holes emit radiation as they rotate, causing them to lose mass faster than they gain mass, so that they steadily evaporate and eventually disappear altogether. The paradox in this scenario is that Hawking radiation originates from the mass of objects that fell into the black hole, but (in theory) the radiation does not carry complete information about these objects as it radiates away from the black hole. Eventually this radiation is expected to cause the black hole to evaporate completely. So the question then arises: where does the information about the objects go? In everyday life, shredding or burning paper documents may be common practice to destroy information, but according to quantum theory, information can never be completely destroyed. In principle, the initial state of a system can always be determined by using information about its final state. But Hawking radiation can’t determine the initial state of anything. Many proposals have been put forth to solve this paradox, including the possibility that some information slowly leaks out over time, that information is stored deep inside the black hole, and that Hawking radiation actually does contain complete information. One of the most developed explanations of the paradox is called black hole complementarity, which is based on the idea that an observer falling into a black hole and an observer watching from a distance see two completely different things. The in-going observer sees information (in the form of himself) pass through the black hole’s event horizon, but to a distant observer it appears that the in-going observer never actually reaches the event horizon due to the strange effect in general relativity of time dilation. Instead, the distant observer sees the information being reflected away from the event horizon in the form of radiation. Since the two observers cannot communicate, there is no paradox (though to many people, such a solution may sound even stranger than the paradox itself). Planck-scale limitsIn their new paper, Ali, Faizal, and Majunder show that something very different happens in black hole complementarity when there is no event horizon below a certain length and time interval, as suggested by gravity’s rainbow. Instead of it appearing to the distant observer that it takes an infinite amount of time for the in-going observer to reach the event horizon, in the new theory, that time is finite. In other words, the distant observer eventually sees the in-going observer fall into the black hole. Using this new insight gained from gravity’s rainbow, Ali, Faizal, and Majumder claim that the mysteries surrounding a black hole arise from the fact that space and time are being described at a scale at which they do not exist. “If we restrict our description to scales at which space and time exist, then the apparent paradoxes associated with black holes seem to naturally resolve,” Ali said. “For example, as the information paradox depends on the existence of the event horizon, and an event horizon like all objects does not exist below a certain length and time interval, then there is no absolute information paradox in gravity’s rainbow. The absence of an effective horizon means that there is nothing absolutely stopping information from going out of the black hole.” Beyond black holes In addition to offering a solution to the black hole information paradox, the physicists explain that the existence of minimum length and time intervals reminds us that it is important to know what questions one is allowed to ask in physics to get the correct answer. The scientists explain this idea using the analogy of a metal rod:”We can ask, how much will a rod bend at a given force without breaking the rod? When we apply a force so great that it breaks the rod, it is meaningless to talk of bending that rod. In the same way, in gravity’s rainbow, it becomes meaningless to talk of space below a certain length scale, and time below a certain interval.”The most important lesson from this paper is that space and time exist only beyond a certain scale,” Ali concluded. “There is no space and time below that scale. Hence, it is meaningless to define particles, matter, or any object, including black holes, that exist in space and time below that scale. Thus, as long as we keep ourselves confined to the scales at which both space and time exist, we get sensible physical answers. However, when we try to ask questions at length and time intervals that are below the scales at which space and time exist, we end up getting paradoxes and problems.” (Phys.org) —The quintessential feature of a black hole is its “point of no return,” or what is more technically called its event horizon. When anything—a star, a particle, or wayward human—crosses this horizon, the black hole’s massive gravity pulls it in with such force that it is impossible to escape. At least, this is what happens in traditional black hole models based on general relativity. In general, the existence of the event horizon is responsible for most of the strange phenomena associated with black holes. Citation: Black holes do not exist where space and time do not exist, says new theory (2015, January 30) retrieved 18 August 2019 from https://phys.org/news/2015-01-black-holes-space-theory.html Researcher shows that black holes do not exist More information: Ahmed Farag Ali, Mir Faizal, and Barun Majumder. “Absence of an effective Horizon for black holes in Gravity’s Rainbow.” EPL. DOI: 1209/0295-5075/109/20001Also at: arXiv:1406.1980 [gr-qc] © 2015 Phys.org This artist’s concept depicts a supermassive black hole at the center of a galaxy. The blue color here represents radiation pouring out from material very close to the black hole. The grayish structure surrounding the black hole, called a torus, is made up of gas and dust. Credit: NASA/JPL-Caltech 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.
Kolkata: The state Disaster Management and Civil Defence department has decided to give satellite phones to district authorities, to ensure uninterrupted communication even during natural calamities and other emergency situations.According to a senior official of the state Disaster Management and Civil Defence department, it has often been found that mobile phones lose network connection when there is a natural calamity.In a bid to ensure that inter-district communication and communication with the state government headquarters stay uninterrupted at the time of an emergency, the district authorities will be provided with satellite phones. Also Read – Heavy rain hits traffic, flightsSources said that initially, 16 satellite phones will be distributed among the districts and gradually, connectivity using satellite phones will be established with all the districts.The officials from districts have also been provided with all sorts of training necessary to operate satellite phones. It will ensure uninterrupted connectivity with the districts, even during an emergency.It may be mentioned that the state Disaster Management and Civil Defence department has also planned to set up Quick Response Teams (QRT) for each district, to ensure better help to people during an emergency situation. Also Read – Speeding Jaguar crashes into Merc, 2 B’deshi bystanders killedThe decision to set up QRTs was taken after a District Disaster Management Authority (DDMA) came into existence in each district.Civil Defence Volunteers will be part of the QRTs and the number of volunteers in each team will be depending on the number of sub-divisions in the district. There will be around 25 volunteers for each sub-division. This comes at the time when the department has become immensely successful in reducing the number of deaths due to lightning, by introducing a system in which people get alerted at least 45 minutes before lightning strikes an area. It is helping people to reach a safe place in the time they are getting after receiving the alert.
Kolkata: After filmmaker-actor-singer Farhan Akhtar pointed out a “glaring error” made in a West Bengal school book which depicted him as legendary athlete Milkha Singh, Trinamool Congress MP Derek O’Brien on Monday said the book was not part of government schools’ curriculum. “Thanks Farhan. Ref the wrong pic of Milkha Singh. Checked with education minister of state. He tells me it isn’t a textbook for government schools. Nor is it published by government,” he said in a tweet. Also Read – Rain batters Kolkata, cripples normal life “Trying to track the private publishing company. They ought to correct the mistake in future editions,” the MP added. Farhan, who played the title role in the Indian track and field legend Milkha Singh’s biopic “Bhaag Milkha Bhaag”, replied: “Appreciate your response. Tagged you since you take education very seriously.” On Sunday, Farhan had tweeted, “To the Minister of School Education, West Bengal. There is a glaring error with the image used in one of the school text books to depict Milkha Singhji. Could you please request the publisher to recall and replace this book? Sincerely”. Among his many achievements, Mikha Singh was the first Indian to clinch an individual athletics gold medal at the Commonwealth Games in 1958.
The Embassy of the Republic of Korea, New Delhi supported by the Korean Consulate in Kolkata hosted “Tasty Korea – a Korean Musical Night” at G D Birla Sabhaghar, Kolkata. The event was graced by senior diplomats from the Korean Embassy in New Delhi, the Honorary Consul General of Korea in Kolkata, the diplomatic and consulate community and also professors and students from various universities and schools in Kolkata.This musical night showcased the spectacular new brand of “BIBAP” which is an upgraded musical called “CHEF”. “BIBAP” has been a tremendous draw for the past six years since its premiere in 2011. One can experience 100 % live beat-box and rediscover the art of B-Boying and Acapella with no special effects or recording. This dynamic B-Boying showcases the process of food-making. The upgraded musical “CHEF” is a fun packed show with rich sounds and vivid visualizations. Every facial expression and movement of the performers is thoroughly calculated, naturally incorporating slapstick comedy in the show. Also, ‘CHEF’ presents a legacy of non-verbal performances and is also interactive as it encourages participation from audience members, which in turn generates unexpected hilarity. Also Read – Add new books to your shelfAccording to a representative from the Korean Embassy, “This musical event will boost the ‘nation brand’ in the cultural capital of India which is Kolkata. “Hallyu” or “Korean Wave” is fast becoming a buzz word globally. The term basically refers to various facets of Korean Culture, including Korean music, dance, dramas, movies, food, fashion and cosmetics that are becoming popular across Asia and other parts of the world.”The Korean musical night ended with a raffle where everyone was given a chance to win attractive prizes. The event also promoted the “XXIII Olympic Winter Games – The Pyeong Chang 2018 Olympic and Paralympics.Regardless of one’s prior knowledge about Korea, this Musical Opera brought unique opportunities that made one discover new interests in Korean culture.
Kolkata: The Wildlife Wing of the state Forest department seized 20 birds of three scheduled species of parakeets from Galif Street on Sunday.No one could be arrested as offenders probably had sensed danger and abandoned the cages full of birds to save themselves. According to sources, acting on a sources information sleuths from Forest department conducted a special raid on Sunday morning at Galif Street. Forest department officials posed as prospected buyers of pets and was taking a round of the pet market for possible catch. After almost an hours, some of them noticed few cages covered with pieces of cloth which were abandoned. Suspecting something fishy, sleuths started keeping strong vigil on the cages. But after waiting for a long time no one came to pick up those cages. Also Read – Rs 13,000 crore investment to provide 2 lakh jobs: MamataLater, forest officials removed the cloth pieces and found three species of birds identified as rose ringed parakeets, alexandrine parakeets and grey headed starling. Immediately, the birds were seized and it was found there are 20 birds from the schedule of forest department regulations which are banned for trade. Later, the birds were taken to the wild life rehabilitation centre in Salt Lake. A case has been lodged. A forest officials said they are continuously trying to inform people not to buy any scheduled birds as it is illegal. The aim is to save and conserve wildlife by awareness of common people. Earlier this month, state Forest department and Wildlife Crime Control Bureau (WCCB) jointly carried out a raid at Galif Street, after the officials got a tip off that several endangered species of birds were being sold by a few persons. A large number of birds were recovered during the raid and nine persons are arrested by the officials of forest department and WCCB.
In 1987 Fred Rogers and his team went on a remarkable journey. They were leaving the cosy TV set of Mister Rogers’ Neighborhood and trading net curtains for The Iron Curtain. This unassuming gentleman in his cardigan and tennis shoes, so beloved of U.S. audiences, was in many ways a definitive American. At that point the show had been running for over 20 years, and was set to last more than a decade after.Mister Rogers, a gentle Republican, represented a wholesome slice of life which for some was rather bland.Photograph of Mister Rogers in the late 1960s.In an article looking at new documentary Won’t You Be My Neighbor, The Telegraph writes that “Mister Rogers’ Neighborhood – there’s no getting around it – was as square as square could be… In one episode, they offered to give the children a sense of how long a minute was. They set an egg timer, and just sat there in silence, on air, for a whole minute.”Fred Rogers speaks before a United States Senate Commerce Committee hearing in support of public broadcasting, May 1, 1969.His presence in Red Square suggests a truly strange chapter in the history of American television and, as some of his Soviet hosts suspected but was never confirmed – espionage.Yet Mister Rogers was merely doing what he’d always done. Reaching out the hand of friendship in his own particular way, accompanied by the likes of puppet Daniel Striped Tiger and the very human deliveryman Mr McFeely, played by David Newell.A sweater worn by Rogers, on display in the Smithsonian Institution’s Museum of American History. Photo by Rudi Riet – Flickr CC BY SA 2.0Newell was also Rogers’ PR man, and it was him who’d suggested the Russian adventure. Their destination was Spokoinoi Nochi, Malyshi, which translates as Good Night Kiddies. Like Mister Rogers’ Neighborhood, the series was a stalwart of national television that had been entertaining children since the Sixties.The New York Times reported on the junior version of East meets West, describing the Russian program as “a mixture of homey morals about manners and kindness, and creative animation involving everything from clay figurines to textured puppets that live out Russian fairy tales, old and new.”Photo of Fred Rogers as a senior in high school.Legendary journalist Ted Koppel had pointed out the similarity, inspiring Newell to mention a crossover to producers. And so Mister Rogers went to meet presenter Tatyana Vedeneyeva and her friends like Khryusha the piglet and Styopa the rabbit.Vedeneyeva returned the favor by guesting in Mister Rogers backyard. They didn’t end the Cold War but it was still a significant moment in TV history. Mister Rogers had entered an exclusive zone and overall things went smoothly.Rogers and François Clemmons reprising their famous foot bath in 1993. Photo by Dr. François S. Clemmons CC BY-SA 4.0That isn’t to say there weren’t bumps in the road. Some initial Moscow frostiness was reportedly thawed when Rogers began playing with Daniel the Tiger during talks. And when the crew wanted to film at a Russian doll factory the request was firmly denied.Producer Margie Whitman revealed to the Times, “They told us why we couldn’t go there, and then said that a few months ago they probably wouldn’t have been able to give us the real reason.”Rogers being presented the Presidential Medal of Freedom by President George W. Bush in the East Room of the White House on July 9, 2002.A key reason Rogers was granted permission could have been his relative inconspicuousness. Despite being part of American family life for decades, his profile outside the Land of the Free was pretty low.The Telegraph comments, “in the pre-internet age, even while soap operas, crime shows and sitcoms criss-crossed the Atlantic, children’s programming seldom traveled… Yet Fred Rogers, who died in 2003, was a figure of titanic influence on several generations of American children.”Rogers screens the tape replay with Betty Aberlin and Johnny Costa in 1969.Mister Rogers’ Neighborhood lasted for 912 episodes. The show and its central figure arguably lacked pizazz, though it did have an aspiring performer named Michael Keaton working behind the scenes.“[He] was one of the nicest, authentically good people you’ve ever met,” Keaton said in a 2014 ABC News interview. “Really good dude [with] kind of a sneaky, sly great sense of humor.”In covering Won’t You Be My Neighbor, The Telegraph wrote, “Its subject was a man who, as (director Morgan) Neville tells me, loved dirty jokes but would never tell one himself.”The Fred Rogers Memorial Statue in Pittsburgh, Pennsylvania.Rogers sometimes used his familiar and trusted corner of the Public Service airwaves to highlight important issues. He would keep youngsters up to speed with current events, tackle thorny topics such as death and challenged racism.His legacy has its detractors, with some claiming “the entitlement and rage of the modern American adult is directly linked to Fred Rogers; that he’s the father of ‘generation snowflake.’”For Neville however, he’s a voice the American public needs. He made his documentary to promote that message of dignified conduct to the world. Neville wondered “Where’s this voice in our culture today? Where’s this voice advocating for civility and empathy and these kinds of things which are so rare. It was not a nostalgic instinct at all: it was how do I get this voice into 2018?”Read another story from us: The Real Catcher in the Rye – Factors Which Led to J.D. Salinger’s Life of SeclusionThe forthcoming movie You Are My Friend, starring Tom Hanks as Rogers, should promote the show in a way it never managed back in the day. And if viewers dig a little deeper, they’ll see a lot more than just a man in a cardigan.
Doug Gottlieb, host of The Doug Gottlieb Show, in for Colin:NBA players can have successful careers and not win a titleTrail Blazers star point guard Damian Lillard got into a Twitter back and forth with a fan who was encouraging him to jump ship from Portland so he can win a title. Lillard fired back that he would prefer to try to win a title and Portland, or not win one at all.It’s a contrarian position in the modern of NBA superteams and player movement, but realistically, how many teams are going to have a legitimate shot to win a title? Two, maybe three, for the foreseeable future. For a player like Lillard, it makes more sense to live a great quality of lif in a city like Portland, rather than chase titles for a career.Don’t hate LaVar Ball for having big dreamsYesterday, Big Baller Brand released the Lonzo Ball signature Zo2 shoe and was collectively laughed at on Twitter for its $500 price tag. A million Twitter jokes, and countless blog articles later, LaVar Ball’s absurd idea received tens of millions of dollars in free advertising, and dominated a portion of the sports media news cycle.Even though LaVar Ball gives you a hundred reasons not to like him, don’t hate on the man for having a dream. He’s the mom and pop store trying to fight Walmart.“If somebody’s not laughing at you your dreams might not be big enough.” Guests:Peter Schrager – Fox NFL Insider joins the show to discuss Jay Cutler moving into the Fox broadcasting booth; the fallout from all the confusion with Bears with the Trubisky pick;Jason Terry – Milwaukee Bucks guard NBA Champion joins the show to discuss the NBA Playoffs; NBA longevity; why he thinks the $500 Ball’s are ridiculous; what it’s like watching the Greek Freak up close; and why playoff LeBron is still on another level than anyone else.Adrian Wojnarowski – Founder and Editor-in-Chief of The Vertical joins the show to discuss Steve Kerr’s health; if the Warriors can win the title without Steve Kerr; if the Spurs and Clippers are in for significant offseason overhauls; and if LaVar Ball will be a problem for Lonzo Ball in the NBA.
Alabama was forced to play with only 3 men on the floor for the final 10 minutes against Minnestoa on Saturday, thanks to their entire bench getting ejected in a fight, a player fouling out, and another rolling an ankle.Even though the Tide trailed by 13 when they went down to 3 players, and by 15 with just over 6 minutes left, freshman NBA prospect Collin Sexton scored 19 of his career-high 40 points while shorthanded, and even gave the Tide a chance to tie the game at 83 with a minute to go.Alabama lost the game, 89-84, but incredibly outscored Minnesota 30-22 with 3 players.Sexton’s performance in the loss is as gutty as a performance as you’re gonna see this year at any level. Here he is lighting up Minnesota while playing 3 on 5. The final six minutes are out of control.