Alastair Graham Walter Cameron

first_imgAlastair Graham Walter Cameron was born in Winnipeg on June 21, 1925, and died in Tucson on October 3, 2005. As a boy his interests ran to science fiction and away from sports. His father was head of the biochemistry department at the Manitoba Medical College; at the age of four Cameron addressed all men as “Doctor,” which he later said was an early example of forming a hypothesis based on limited data.His mother raised him by herself. Working his way through a private high school he became a bookie, taking bets from fellow students, and did quite well. In about 1941 he made a bet with a classmate that man would land on the Moon by the year 1970. Years later the classmate asked Cameron how he had known when the Apollo Program would take place. He replied that he had extrapolated the speed of transportation to the time when that speed would exceed that needed to escape from the Earth.He majored in math and physics at the University of Manitoba, and for his physics Ph.D. at the University of Saskatchewan, where he devised a new method to determine nuclear cross sections. He went on to apply nuclear physics to the origin of the chemical elements, or nucleosynthesis, in stars. In 1955 he married Elizabeth “Betsy” MacMillan. Betsy called Cameron “Alastair,” but in the scientific community he was known only as “Al.”After the Ph.D., Cameron spent two years at the Ames Research Center of the U.S. Atomic Energy Commission. While there he read that the astronomer Paul Merrill had observed a feature in the spectrum of a red giant star that corresponds to the chemical element technetium (Tc). Technetium has no stable isotopes; it was discovered in 1937 only after bombarding molybdenum with energetic particles; hence its name, derived from the Greek for “artificial.” Given the fact that technetium decays rapidly into other elements, Cameron reasoned that it must have been created in the star where Merrill found it. Cameron found this discovery “very exciting” because it provides a clue to the origin of the heavy elements in the Universe. Having never studied astrophysics before, Cameron immersed himself in the literature. In 1954 he relocated to the Chalk River Laboratory of the Canadian Atomic Energy Project, where he calculated cross sections for the many nuclear reactions that occur in the interiors of stars when the temperature is high enough for collisions between charged nuclei to overcome the electrical repulsion between them.The temperature at the center of the Sun is 14 million degrees, high enough to allow the conversion of hydrogen into helium, but not high enough for the reactions that ultimately lead to the creation of elements as heavy as Tc, that require hundreds of millions of degrees.While Cameron was working on nucleosynthesis, other theorists calculated that the Sun would run out of hydrogen in 5 billion years, at which time the temperature in its core would begin to rise, and the Sun would become a red giant star of the type that Merrill observed to contain Tc. Surprisingly, when stars run out of one nuclear fuel, their cores get hotter, not cooler, and then new fuels that react only at higher temperatures kick in. In red giant stars the helium produced earlier is reacting to form even heavier elements.Cameron predicted what elements are produced and in what quantities. He found that indeed technetium is produced along the way, explaining Merrill’s observation. In order to be found in the atmospheres of the Sun and other stars, and in solid bodies such as planets and meteorites, new elements have to first be ejected from the parent star into space where they contaminate interstellar matter destined to form new generations of stars and planets. Thus the full understanding of nucleosynthesis involves the formation of stars and planets, as well as the ejection of heavy elements into space by red-giant winds and supernova explosions. Undaunted by the challenge, Cameron plunged into a full range of theoretical astrophysics.Cameron published his papers on nucleosynthesis in 1957. Experts attribute the birth of the field of nuclear astrophysics to those papers, together with one by a group at Caltech led by William Fowler published the same year. Fowler, an experimentalist, won the Nobel Prize in 1983 for his work in the field, and in his Nobel Lecture credited the independent work of Cameron.In 1961 Cameron moved from Chalk River to the newly formed Goddard Institute for Space Studies in New York City. There he supervised graduate students at Columbia, New York University, and Yale. He taught regularly at Yale, where his students compiled his notes into a monograph that is highly regarded, but unfortunately, was never published. In 1973, upon the founding of the Harvard-Smithsonian Center for Astrophysics (CfA) at 60 Garden Street, Cameron was appointed to a professorship in the Department of Astronomy at Harvard. He also accepted a position as associate director of CfA for Planetary Science, a field to which his interests were increasingly turning because of the continuing discoveries of anomalous abundances of isotopes in meteorites. His model of the Solar Nebula, a disk of gas and dust formed at the time of the origin of the Sun 4.5 billion years ago, provides quantitative temperatures that theorists use in their studies of planet formation.During this period, Cameron is reported to have given a seminar at Caltech covering the entire history of the Sun and planets, from the collapse of an interstellar cloud to the coagulation of dust to form the solid cores of the planets. When asked what he did on the seventh day, Cameron replied, “I rested.”An important result of Cameron’s work was his conclusion that the main product of the buildup of the observed high abundance of the elements near iron in the periodic table is not iron per se, as had been assumed, but radioactive nickel 56. His idea was verified many years later by a NASA spacecraft.In 1982 Cameron became the chair of the Space Science Board of the National Academy of Sciences, which advises NASA on its science program, and at Harvard he served six years as chair of the Department of Astronomy. During this period he also organized annual conferences to bring together astrophysicists and planetary scientists to enhance collaborations between their different specialties.He then decided to attack a long-standing theoretical problem in planetary physics: the origin of the Moon. The Apollo Program had found that unlike the Earth, the Moon has no iron core, but is composed solely of the same material as the mantle of the Earth. At the time theorists could not explain this fact. Cameron proposed that the Moon formed from a disk of debris orbiting the Earth, much as the Solar Nebula orbited the Sun. But where could the debris have come from? Cameron proposed that it was material ejected from Earth’s mantle when a Mars-sized body collided with the Earth early in the history of the solar system. That would explain the Moon’s composition, but how would the debris reach the distance of the Moon? Cameron attacked this problem head on, acquiring faster computers for his office in order to model the collision event. He finally succeeded in showing that such a collision would result in a disk of the correct mass, as well as the angular momenta of the Earth and Moon that are observed today. Cameron’s theory is now the accepted one for the origin of the Moon.Cameron received honors from many scientific societies, among them the Petrie Prize of the Canadian Astronomical Society, the NASA Distinguished Service Medal, the Smith Medal of the National Academy of Sciences, the Hess Medal of the American Geophysical Union, the Leonard Medal of the Meteoritical Society, the Bethe Prize of the American Physical Society, and the Henry Norris Russell Lectureship of the American Astronomical Society—the highest honor an astronomer can receive.Upon his retirement from Harvard in 1999, Cameron accepted an appointment at the Lunar and Planetary Laboratory of the University of Arizona in Tucson. There he and Betsy lived in the Academy Village, a non-profit organization devoted to life-long learning. Sadly, Betsy, his loving wife of forty-six years, died in 2001; they had no children. Those of us who were lucky enough to know Al Cameron well remember him as an exceptionally talented and dedicated scientist, a wise counselor, and a witty person. Few are those who cross one’s path with all of these qualities; Al Cameron was one of them.Respectfully submitted,Alexander DalgarnoJames MoranDimitar SasselovPatrick ThaddeusFriedrich ThielemannGerald WasserburgJohn WoodGeorge Field, Chairlast_img read more

Laura Benanti & Josh Radnor to Star in B’way Revival of She Loves Me

first_img Show Closed This production ended its run on July 10, 2016 Related Shows Tony winner Laura Benanti and current Disgraced star Josh Radnor are set to become good old-fashioned pen pals—the pair will headline She Loves Me on Broadway. Directed by Scott Ellis, the revival features a book by Joe Masteroff, lyrics by Sheldon Harnick and music by Jerry Bock. The production will be part of Roundabout’s 50th Anniversary season and play a limited engagement in spring 2016. Theater, dates, along with further casting and creative team, will be announced later.Benanti took home a Tony for her performance in Gypsy; she was also nominated for Into the Woods and Women on the Verge of a Nervous Break Down. She will next appear on stage in the Rockettes’ New York Spring Spectacular. Her screen credits include Nashville, The Sound of Music LIVE!, The Playboy Club, Go On, Starved, Law and Order: SVU, Royal Pains, Eli Stone, The Big C and Elementary.Radnor is best known for his work on CBS’ How I Met Your Mother; he has written, directed and starred in two films, happythankyoumoreplease and Liberal Arts. Other screen acting credits include Afternoon Delight, ER, Six Feet Under, Law & Order and The Court. He made his Broadway debut in The Graduate.She Loves Me follows Georg (Radnor) and Amalia (Benanti), two parfumerie clerks who aren’t quite the best of friends. Constantly bumping heads while on the job, the sparring coworkers can’t seem to find common ground. But little do they know, the anonymous romantic pen pals they have both been falling for happen to be each other! Will love continue to blossom once their identities are finally revealed? The score features favorites such as “Vanilla Ice Cream,” “A Romantic Atmosphere,” “Dear Friend” and “She Loves Me.”The musical comedy is based on a play by Miklos Laszlo, whose story was also the basis for the 1940 James Stewart film The Shop Around the Corner and the 1998 Tom Hanks and Meg Ryan film You’ve Got Mail. Ellis directed Roundabout’s She Loves Me in 1993, which marked the first Broadway musical in the company’s history. The show was first seen on the Great White Way in 1963 in a production helmed by Harold Prince. Laura Benanti Star Files View Comments She Loves Melast_img read more

Brian d’Arcy James Tapped for Netflix Series 13 Reasons Why

first_img View Comments Brian d’Arcy James is heading to the small screen in a project from two previous collaborators. According to Deadline, the Tony nominee will star in the Netflix series 13 Reasons Why, written by Next to Normal scribe Brian Yorkey and helmed by Spotlight director Tom McCarthy.The 13-episode series will also star Dylan Minnette, Katherine Langford and Kate Walsh. Based on the bestselling young adult novel, it follows a boy named Clay, who receives a box of cassette tapes belonging to Hannah, his late classmate and crush, after she takes her own life. The tapes explain to her peers how they contributed to her suicide. D’Arcy James will play Hannah’s father, a pharmacist who grapples with the loss of his daughter by throwing himself into his work.D’Arcy James, who most recently appeared on Broadway in his Tony-nominated turn in Something Rotten!, has also been cast in Civil, a modern-day Civil War pilot from TNT. His Broadway stage credits include Macbeth, Time Stands Still, Next to Normal, Shrek, The Lieutenant of Inishmore, The Apple Tree, Sweet Smell of Success, Titanic and more. His upcoming screen credits include Felt, Rebel in the Rye and Trouble. Brian d’Arcy James(Photo: Bruce Glikas)last_img read more

The Senator Versus Coal

first_imgThe Senator Versus Coal FacebookTwitterLinkedInEmailPrint分享The coal industry — responsible for much of the CO2 pollution driving climate change — is dying, and State Senator Loni Hancock, D-Berkeley, wants to help bury it. Hancock, whose district encompasses much of the East Bay, from Rodeo to San Leandro, has spent the last half year drafting legislation designed to prevent millions of tons of coal from being transported by train through the East Bay and exported from a marine terminal that is to be built in Oakland near the foot of the Bay Bridge. Hancock also wants to block any future coal export schemes in the state.Hancock made a last ditch effort to convince Utah’s lawmakers that subsidizing an Oakland coal terminal is unwanted and risky. “I strongly oppose your bill to invest $53 million in Utah taxpayers’ money to build a coal-export terminal in California,” Hancock wrote in a March 2 letter to Utah Senator Adams. “Environmental groups from Oakland and the Bay Area strongly oppose the transport of coal and are working together to stop the project.”Hancock also informed Adams of her four anti-coal bills that will be considered by the California Senate in April. “I would think that Utah residents would also question whether their hard-earned tax dollars should be going to build a railroad and port terminal in another state instead of promoting sustainable economic development in Utah,” she wrote.Some Utah lawmakers raised Hancock’s criticisms during debates in the Senate and House of Representatives last week, but Adams’ $53 million coal subsidy was approved by both houses and will likely be signed by Governor Herbert.Hancock said the use of public money is a bad investment in a “dying industry” and can only result in environmental damage and economic losses. She said it appears that the coal industry is attempting to use public money to stay afloat, because private investors have all but abandoned coal.“Institutional investors are pulling out of coal,” said Tom Sanzillo of the Institute for Energy Economics and Financial Analysis, a think tank that promotes renewable energy development. “The industry isn’t collapsing, it has collapsed.”last_img read more

Iran’s Khamenei asks India to stop attacks on Muslims after deadly riots

first_imgCritics argue the law discriminates against Muslims and violates the spirit of India’s secular constitution.Hundreds of thousands of people have taken part in protests since December.Earlier this week, the office of the UN High Commissioner for Human Rights said it intended to approach India’s Supreme Court about the citizenship law. Topics : Iranian Supreme Leader Ayatollah Ali Khamenei urged India on Thursday to “confront extremist Hindus” and “stop the massacre of Muslims”, adding to the international fallout over deadly Hindu-Muslim violence in New Delhi.At least 44 people were killed and hundreds injured in the worst communal riots in the Indian capital in decades, triggered by clashes between supporters of a new citizenship law and those against it.”The hearts of Muslims all over the world are grieving over the massacre of Muslims in India,” Khamenei said in a tweet in English, just days after New Delhi rebuked Iran’s foreign minister for commenting on the same issue.center_img “Iran condemns the wave of organized violence against Indian Muslims,” Foreign Minister Mohammad Javad Zarif tweeted on Monday, in response to which New Delhi summoned the Islamic Republic’s ambassador and lodged a protest.”We do not expect such comments from a country like Iran,” ministry spokesman Raveesh Kumar said in a statement later.The citizenship law provides non-Muslims from Afghanistan, Bangladesh and Pakistan a fast track to Indian citizenship.Prime Minister Narendra Modi’s Hindu nationalist government says this is required to help minorities from those mainly Muslim countries.last_img read more

Leppälä elected chair of EIOPA stakeholder group

first_img“The OPSG is in a unique position to help EIOPA and other European institutions to reach the best possible outcomes.”Leppälä is the second secretary general of PensionsEurope to chair the OPSG, following Chris Verhaegen’s term as the group’s inaugural chair, when the organisation was known as the European Federation for Retirement Provision. The OPSG, which met on 28 April for the first time since 21 new members were named, also elected Bernard Delbecque as deputy chairman during its meeting, the EIOPA press office confirmed to IPE.Delbecque was appointed to the OPSG earlier this year.He is director of economics and research at the European Fund and Asset Management Association (EFAMA), which in the past has been a propronent of a pan-European personal pension product – an idea now championed by the European Commission as part of its Capital Markets Union proposals. Matti Leppälä, secretary general at PensionsEurope, has been elected chair of the European Insurance and Occupational Pensions Authority’s (EIOPA) pension stakeholder group (OPSG), succeeding Philip Shier.Leppälä, who has been with the European industry group since 2011, was previously the OPSG’s deputy chair, serving under Benne van Popta and Shier, following the former’s resignation mid-term in 2015.“I am honoured to chair the OPSG for the coming term of two and a half years,” Leppälä said in a statement.“The role of occupational pensions and other private pensions is increasingly important for good pensions in Europe.last_img read more

Search continues for missing Lawrenceburg man

first_imgLawrenceburg, In. — One year after the disappearance of Joshua Batcher, 37, of Lawrenceburg, the family is offering a $10,000 reward for the arrest and conviction of anyone responsible.Indiana State Police say on the morning of April 26, 2017, he left his grandfather’s home on Front Street, got into a gray or green pickup truck and has not been seen since.Detectives encourage the public to come forward with any information that could help solve the case. Investigators say every piece of information, no matter how small, is vital in determining what happened to Batchelor.Information can be left by calling 812-689-5000.last_img

JUST-IN: Lionel Messi ‘will report to Barca training on Monday’

first_img Read Also: Anthony Joshua targets Barca switch to replace Lionel Messi Koeman, 57, faces a fine line between indulging a potentially disruptive presence and possibly alienating even more of his squad. Messi is reportedly being chased by the likes of Manchester City, Manchester United, Chelsea and Inter Milan as the race for his signature hots up. FacebookTwitterWhatsAppEmail分享 Lionel Messi will report to Barcelona training on Monday August 31, despite making public his intention to leave the Spanish giants, reports claim. According to the UK Sun report, the Argentine shocked the football world on Tuesday, August 25 by confirming that he will try and leave the club this summer. And he believes he can go for free, by exercising a clause in his contract to do so. But ahead of the inevitable legal battle with Barcelona, the 33-year-old’s representatives have advised him against doing anything that could give his club any extra ammunition in the court room. So according to TyC Sports, Messi will turn up when Barca return to pre-season training on Monday – despite previous indications that he wouldn’t. And new boss Ronald Koeman, whose disastrous first meeting with his captain precipitated the transfer request, will have a big decision to make regarding the six-time Ballon d’Or winner.Advertisement The Dutchman will decide whether to allow him to train with the rest of the first-team squad – or to have him work separately. Loading… Promoted ContentBest & Worst Celebrity Endorsed Games Ever MadeThese Maisie Williams Facts Are Bound To Shock You8 Superfoods For Growing Hair Back And Stimulating Its GrowthWhat Is A Black Hole And Is It Dangerous For Us All?The Very Last Bitcoin Will Be Mined Around 2140. Read MoreEver Thought Of Sleeping Next To Celebs? This Guy Will Show YouFascinating Ceilings From Different CountriesNothing Compares To Stargazing Places Around The WorldThis Guy Photoshopped Himself Into Celeb Pics And It’s Hysterical10 Risky Jobs Some Women DoWhat Happens To Your Brain When You Play Too Much Video Games?10 TV Characters Who Were Destined To Become Iconiclast_img read more

Mayweather drops hint about McGregor rematch

first_img Loading… “It’s actually quite interesting because I’m left-handed and McGregor and Khabib are both left-handed. “So him choosing to spar me, that might be the reason why. “That’s something someone said to me the other day and I was like, ‘you know what, that makes sense’, so it’s very possible. “The McGregor fight generated so much money, why not do something like that again or fight another UFC fighter if he’s making millions of dollars?” Mayweather retired from professional competition after defeating the Irishman and he holds a 50-0 record. He hasn’t slowed down in retirement however and Douglin added he gets called in to train during the early hours of the morning. “He [Mayweather] called me up around 1am,” he continued. “I know he likes to train at night. So I got up and told my mother that Mayweather wanted to spar. “I do think this could happen, I think he’s going to fight UFC guys.Advertisement Boxing legend Floyd Mayweather is said to be training for a huge rematch with Conor McGregor after sparring with a left-hander. Mayweather squared off with UFC superstar McGregor for a huge inter-promotional fight back in 2017. ‘Money’ emerged as winner but McGregor has claimed he would come out on top in a rematch. Denis Douglin is currently sparring with the undefeated boxer and he thinks he was chosen due to being a southpaw, the same as McGregor. The 32-year-old Vegas Insider: “[A fight against McGregor or Khabib?]center_img “We got to the gym before him, I was walking around taking pictures and stuff. He walked in at 2am with so much energy and so excited, and he let me know that he was going to beat me up.“He was making fun of me saying harmless stuff like: ‘Oh, you think you’re so bad, you got all of those muscles, but I’m still going to beat you up’.“I love the fact that he was excited to beat me up, it was like an honour to have Mayweather talking bad about me.“The first three rounds were great work, still talking trash back and forth to each other, and then in the fourth round he said: ‘let’s turn the bell off, we’re going to spar until you quit’.”McGregor, meanwhile, retired from MMA in June but hasn’t ruled out a potential return to boxing.When asked about a rematch with Mayweather, the ‘Notorious’ told TMZ: “I would like to rematch him under boxing rules, again.Read Also: Joshua to face Pulev on Dec 12, Fury vs Wilder holds a week later“And I believe I would win. Actually, there I go again with that fake humbleness. I know I would win!“When I went into the fight, in the early rounds I was whooping him, in the early rounds. I went back to my corner after the first round and I said, ‘This is easy!’… and then he had to switch up his style.”FacebookTwitterWhatsAppEmail分享 Promoted ContentCouples Who Celebrated Their Union In A Unique, Unforgettable WayWhich Country Is The Most Romantic In The World?You’ve Only Seen Such Colorful Hairdos In A Handful Of Anime6 Incredibly Strange Facts About HurricanesPeople Born In The 90-s Know What It Is8 Things That Will Happen If An Asteroid Hits EarthCristiano Ronaldo Turns His Hotels Into Coronavirus Hospitals?Portuguese Street Artist Creates Hyper-Realistic 3D Graffiti7 Theories About The Death Of Our UniverseThe Very Last Bitcoin Will Be Mined Around 2140. Read More10 Risky Jobs Some Women DoThe Best Cars Of All Timelast_img read more

Syracuse’s international players find solace in showing game emotions in native languages

first_img Facebook Twitter Google+ Published on April 16, 2017 at 10:33 pm Contact Andrew: | @A_E_Graham A steady din carries through Drumlins Tennis Center on game days. The faint hum from dozens of fluorescent lights, the chatter of fans and coaches and the steady rhythm of “thwacks” coming from each court as a rally ensues all contribute to the noise.When a rally subsides and a point is won, it’s often punctuated by the hollers and screams of a Syracuse player, especially when they speak multiple languages.“Half the people on the team have a specific thing they always say,” said Gabriela Knutson, a Czech Republic native.Six different players for Syracuse (7-12, 4-8 Atlantic Coast) are fluent in at least one language other than English. That offers players a unique avenue to express emotions and vent aggression without fans, opponents, and most importantly, officials, catching on to what they are saying. Three players — Knutson, Anna Shkudun and Masha Tritou — admitted that they use the mask of other dialects to let the occasional, or frequent, curse word fly.“It just feels great you know,” Greece native Tritou said. “I’m taking it out of my system and I just feel more relaxed after that, and I’m like, ‘OK, now, play.’”AdvertisementThis is placeholder textOf all the multilingual players, Shkudun is the most vocal. The Ukrainian native alternates between English, Russian, and Ukrainian. It gives her a chance to vent her frustrations of missing a shot long or planting a return in the net without letting the whole venue know quite what she’s saying.But she knows it’s not entirely a secret.“It’s cool that no one really understands,” Shkudun said, “but at the same time, some people can guess.”While Shkudun, Tritou and Knutson all admitted to cursing, none divulged what they say.Codie Yan | Staff PhotographerWhat they all did convey is even though they can say almost whatever they please, it is almost never directed at their opponent. Cursing is reserved for themselves. Tritou does it often, Knutson and Shkudun each a little bit here and there. Libi Mesh, who grew up in Israel, said she tries not to, and checks herself carefully when she feels emotions are reaching a boiling point.“I try not to say bad stuff on the court,” Mesh said. “… I could, but I try to avoid it.”Knutson is far less worried about controlling her language, and she knows that there are many things said in Czech that would otherwise have her holding her tongue in English.“I think it comes naturally at that point,” Knutson said.Besides the obvious ability to curse, players often bellow far more tame, words and phrases.Of all the things players shout, Shkudun’s “v kort,” which is roughly Russian for “play inside the court,” is probably the most specific.One phrase that bridges all speech patterns and cultures on the team is the classic, “come on!” Shkudun and Tritou can be heard yelling it in Russian as “davai” while Mesh opts between Russian and the Hebrew alternative of “kadima.” Tritou — who speaks Dutch, Greek, Russian and English — will occasionally blurt it out in Dutch as “kom op.”Knutson often shouts “legs” in Czech to herself, accompanied by an open palm to her thigh. Her mother, Ilona, used to urge her on as a child, encouraging use of her lower body. Knutson’s Czech iteration of legs, “nohy,” is closely related to Shkudun’s Russian rendition of “nogi.” Mesh’s Hebrew version, “raglaim,” stands out.“Whatever happens,” Mesh said, “whatever language comes out, it’s what comes out.”SU head coach Younes Limam stresses body language with his team, and their actual language plays a role in that. Limam want his players to mask any nerves or discomfort by getting fired up and giving an occasional yell or shout. Similarly, if a player wins a big point, he wants them to celebrate it and own the moment.As for the swearing, Limam doesn’t get involved.“I try not to know,” Limam said. Commentslast_img read more