Extended length, scooped back hem, and larger print area, for those who like the looooong look.
Regular fit (but as we said, very long).
Model shown is 6' / 183 cm tall and wearing size Large Midweight 4.2 oz. / 145 gsm fabric, solid color t-shirts are 100% cotton, charcoal heather is 52% cotton/48% polyester
Topics: Education, Existentialism, History, Medicine, Nuclear Power
21st-century weather models show how radioactive fallout from atmospheric nuclear tests spread more widely than thought across the US
The Trinity Nuclear Test on 16 July 1945 is a key incident in the blockbuster Oppenheimer movie and in the history of humankind. Many scientists think it marks the beginning of the Anthropocene, a new geological era characterized by humanity’s influence on the Earth. That’s because Trinity’s radioactive fallout will forever appear in the geological record, creating a unique signature of human activity that can be precisely dated.
But there’s a problem. In 1945, radioactive monitoring techniques were in their infancy, so there are few direct measurements of fallout beyond the test site. What’s more, weather patterns were also less well understood, so the spread of fallout could not be easily determined.
As a result, nobody really knows how widely Trinity’s fallout spread across the U.S. or, indeed, how the fallout dispersed from other atmospheric nuclear tests on the U.S. mainland.
Nuclear Mystery
Today, that changes thanks to the work of Sébastien Philippe at Princeton University and colleagues. This team used a state-of-the-art weather simulation for the 5 days after each nuclear test to simulate how the fallout would have dispersed.
The result is the highest resolution estimate ever made of the spread of radioactive fallout across the U.S. It marks the start of the Anthropocene with extraordinary precision, and it throws up some significant surprises. Some parts of the U.S. are known to have received high levels of fallout, and the new work is consistent with this. But the research also reveals some parts of the US that received significant fallout without anybody realizing it.
The findings “provide an opportunity for re-evaluating the public health and environmental implications from atmospheric nuclear testing,” said Philippe and co.
Between 1945 and 1962, the U.S. conducted 94 atmospheric nuclear tests that generated yields of up to 74 kilotons of TNT. (Seven other tests were damp squibs.) 93 of these tests took place in Nevada, but the first, the Trinity test in the Oppenheimer film, took place in New Mexico.
Topics: Civilization, Climate Change, Democracy, Existentialism, Global Warming
In my post on Friday, two weeks ago, I compared the Earth to a plastic or glass bottle in a microwave. Of course, YouTube has an example of someone not taking Thermodynamics seriously. After a LONG two minutes and some change, the explosion is a sad but apt metaphor for the climate change that we have allowed to become a crisis, barreling forward into a full-blown catastrophe. It’s dystopian what’s going on. A short list:
In Italy, they’re discussing “underground climate change” as the summer is so hot it melted the insulation on their power grid underground. They’re also evacuating for wildfires.
If you fall on the pavement in Phoenix, Arizona, you’re taken to the burn unit, as asphalt in Arizona has been measured at 180-degree temperatures. Well, it's below boiling.
Off the coast of climate change-denying Florida, the ocean temperatures are 101.4 degrees Fahrenheit, balmy for a jacuzzi but catastrophic for coral that acts as a natural barrier to hurricanes and “us,” as it is in our food chain. Their death is the bellwether of coming food shortages, which of course, usually precipitates armed conflicts, either internal or international.
At the behest of a classmate from NC A&T, my wife and I attended her family reunion in Fayetteville, NC, a week and weekend before my family reunion in Virginia Beach, Virginia. The similarities I recall were striking (they’ll make sense as to how this relates to our current situation):
Good food! African American Family Reunions are legendary for spreading food, including fried chicken, baked beans, homemade macaroni and cheese, and potato salad.
Fellowship. I saw cousins I hadn’t seen in years. I did a “paint and sip” party, where I hadn’t painted ANYTHING in decades. It was a cathartic activity led by a therapy artist for people suffering from mental health crises like PTSD.
The purpose of the business meeting, in my friend’s and my family’s case, was the discussion where to have the NEXT family reunion. For my family, 2025 will be in California (Columbia, SC as a backup), Pittsburgh, Pennsylvania, in 2027, and Greensboro, NC, in 2029.
In each case, planning for the NEXT family reunions assumes we have a functional planet to plan and experience them on.
Mathematics is said to be applied philosophy, physics applied mathematics, and engineering applied physics.
In America, policy is applied physics coupled with political realities.
Currently, in certain democracies, we have parties that concede to the reality of climate change and those obliged to the Fossil Fuels Industry, which is likely the most destructive industry, only second to military contractors.
Fossil Fuels has known about the effects of their product since the late seventies when I was in high school. They hired the same lawyers who obfuscated the effects of cigarette smoking, enabled by spineless politicians who themselves, like drug dealers, weren’t smokers. The body count rivals the holocaust.
That body count was in the millions of humans volunteering to pollute their bodies. The coming body count will number in the hundreds of millions of climate refugees fleeing from coastal cities and the house-less dying from heat exhaustion.
The hoarding of wealth does not consume me, which is the basis of our current crisis: industries and individuals who are too selfish to think beyond the current business quarter and the next quarter. That’s the span of their attention, and the only thing that will spark their attention is if any action they take is profitable and they can avoid paying taxes that help the rest of humanity they’re a part of.
What is happening astonishes climate scientists. This dystopian hellscape was to occur in the year 2050: a twenty-seven-year acceleration.
Part of planning family reunions is the notion that there is a future and a hope to have children and add to the legacy of families.
Millennials and GEN Z are starting out living longer with their parents than previous generations, not purchasing their first home, not attending worship services, delaying or opting to NOT have children because they’re bereft of a future, or hope, stolen from them by a generation in its twilight, that doesn’t care about the wanton destruction they leave in the wake of their grandchildren due to mental depravity and greed.
“People with hoarding disorder have persistent difficulty getting rid of or parting with possessions due to a perceived need to save the items. Attempts to part with possessions create considerable distress and lead to decisions to save them. The resulting clutter disrupts the ability to use living spaces (American Psychiatric Association, 2013).”
If you’re not used to sharing, you’re likely to use phrases like “socialism” and “communism” (or woke) when the fact is, you don’t care about anyone or anything other than yourself. This self-absorption will only buy them a few weeks at best after a full societal collapse. At that point, “billionaire” and “millionaire” are irrelevant titles with no places to spend.
Part of planning family reunions is the notion that there is a future and a hope to have children and add to the legacy of families.
Because of the avarice of evil men (mostly), I’m starting to have my doubts.
Topics: Climate Change, Energy, Existentialism, Global Warming, Green Tech
Noun: the branch of physical science that deals with the relations between heat and other forms of energy (such as mechanical, electrical, or chemical energy) and, by extension, the relationships between all forms of energy.
Heatstroke is a condition caused by your body overheating, usually as a result of prolonged exposure to or physical exertion in high temperatures. This most serious form of heat injury, heatstroke, can occur if your body temperature rises to 104 F (40 C) or higher. The condition is most common in the summer months.
Heatstroke requires emergency treatment. Untreated heatstroke can quickly damage your brain, heart, kidneys, and muscles. The damage worsens the longer treatment is delayed, increasing your risk of serious complications or death.
A metaphor: If you heat a bottle of water, the liquid inside will heat, causing pressure to deform the bottle if it's plastic or, many times, shatter it if it's glass.
Driving to and from work, I see house-less (I stood corrected by a man in Austin, Texas, who showed me his home, a tent in a field) with their quintessential signs, in the vernacular of the depression era, "panhandling," begging for dollars to get a snack, a beer, a joint, to anesthetize their pain, and plights. There are rare times I present them with those bills, as with most people having credit cards, debit cards, and Apple Pay, I'm not always in a position to help them. My wallet, more often than not, contains coins and folded receipts.
The water off the coast of climate-denying Florida climbed above 90 degrees, putting coral and the ecosystem that we're a part of at risk and giving the furnace to supercharge more deadly storms. Farmers Insurance has left the Sunshine State because insuring houses impacted by rising temperatures and climate disasters is becoming less cost-effective every day. The Sunshine State may no longer be a retirement destination if you can't afford to repair or reconstruct a home shattered by gale-force winds. Disney may HAVE to move.
It's easy to look down on the un-housed, speculate as we drive by in airconditioned cars that they're lazy, that they have mental health issues, that. their families got tired of dealing with them, or, if their families were their financial "lifelines," all lifelines succumb to Entropy and eventually have expiration dates.
Heatstroke is a condition caused by your body overheating, usually as a result of prolonged exposure to or physical exertion in high temperatures. This most serious form of heat injury, heatstroke, can occur if your body temperature rises to 104 F (40 C) or higher. The condition is most common in the summer months.
Heatstroke requires emergency treatment. Untreated heatstroke can quickly damage your brain, heart, kidneys, and muscles. The damage worsens the longer treatment is delayed, increasing your risk of serious complications or death.
What happens when the un-housed collapse? How long will we drive by in weather like Texas or Saudi Arabia, and instead of holding a forlorn sign, instead of asking for a few bucks, we're instead hit through our airconditioning with a stench of rot more rancid than a thousand rodents in a bag? Will we gag? Will we call 911 or the Sanitation Department to collect the dead like refuse? Where will the bodies be buried, or will they be cremated, with the only record: "Jane or John Doe" and the date? Rancid bodies tend to incubate diseases: Are we, through neglect of climate change and apathy, generating the next pandemic?
A 64-year-old woman collapsed and died of heat exhaustion in Big Bend, Texas. A 27-year-old man collapsed and died of heat exhaustion in California. Both were hikers and tragically chose their activity. Circumstances chose the un-housed: all of us are humans on the same planet, in the same bottle, where the water is superheating.
Humanity is related to heat, and all forms of energy, from billionaires to paupers.
One group is far LESS likely to collapse in the streets from heat exhaustion.
Students should strategically consider where to apply to graduate school, and faculty members should provide up-to-date job resources so that undergraduates can make informed career decisions.
The number of bachelor’s degrees in physics awarded annually at US institutions is at or near an all-time high—nearly double what it was two decades ago. Yet the number of first-year physics graduate students has grown much more slowly, at only around 1–2% per year. The difference in the growth rates of bachelor’s recipients and graduate spots may be increasing the competition that students face when interested in pursuing graduate study.
With potentially more students applying for a relatively fixed number of first-year graduate openings, students may need to apply to more schools, which would take more time and cost more money. As the graduate school admissions process becomes more competitive, applicants may need even more accomplishments and experiences, such as postbaccalaureate research, to gain acceptance. Such opportunities are not available equally to all students. To read about steps one department has taken to make admissions more equitable, see the July Physics Todayarticle by one of us (Young), Kirsten Tollefson, and Marcos D. Caballero.
We do not view the increasing gap between bachelor’s recipients and graduate spots as necessarily a problem, nor do we believe that all physics majors should be expected to go to graduate school. Rather, we assert that this trend is one that both prospective applicants and those advising them should be aware of so students can make an informed decision about their postgraduation plans.
The “itch” for graduate school has always been a constant with me. I wanted especially to go after meeting Dr. Ronald McNair after his maiden voyage on Challenger in 1984. Little did I know that he would perish two years later in the same vehicle. Things happened to set the itch aside: marriage, kids, sports leagues. Life can delay your decision, too. My gap was 33 years: 1984 to 2017.
The recent decision by the Supreme Court to overturn another precedent: Affirmative Action in college admissions, affects graduate schools as well as undergraduate admissions. After every effort of progress, whether in race (a social construct) relations, labor, or gender, history, if they allow us to study it, has always shown a backlash. The group that is in power wants to remain in power, and the inequity those of us lower on the totem poll are pointing out they see as the result of the "natural order," albeit by government fiat.
My pastor at the time could have called our congressman and gotten me an appointment. My grades weren't too bad, and being the highest-ranking cadet in the city and county probably would have helped my CV. I chose an HBCU, NC A&T State University, in my undergrad because Greensboro to Winston-Salem was and is a lot closer than the Air Force Academy in Colorado. I would have been away from my parents for an entire agonizing year of no contact: cell phones and video chatting weren't a thing. I also wasn’t a fan of my freshman year being called a “Plebe” (lower-born). I do support the decisions students and their parents make as the best decision for their future. I do not support an unelected body trying to do "reverse political Entropy," turning back the clock of progress to 1953. We are, however, in 2023, and issues like climate change can be solved by going aggressively towards renewables: Texas experienced some of the hottest days on the planet, and their off-the-national grid held because of solar and wind, in an impressive display of irony.
Physics majors who graduate and go to work are prepared for either teaching K-12 or engineering. I worked at Motorola, Advanced Micro Devices, and Applied Materials. I taught Algebra 1, Precalculus, and Physics. So, if it’s any consolation: physics majors will EARN a living and eat! As a generalist, you should be able to master anything you’d be exposed to.
Speaking of Harvard: when I worked at Motorola in Austin, Texas, one of my coworkers was promoted from process engineering to Section Manager of Implant/Diffusion/Thin Films. He attended Harvard, and I, A&T. I still worked in photo and etch, primarily as the etch process engineer on nights. I noticed he had a familiar green book on his bookshelf with yellow, sinusoidal lines on the cover.
Me: I learned Physics I from Dr. Tom Sandin (who recently retired after 50 YEARS: 1968 - 2018). He taught Dr. Ron McNair, one of the astronauts on the Space Shuttle Challenger. Physics II was taught to me by Dr. Elvira Williams: she was the first African American woman to earn a Ph.D. in Physics in the state of North Carolina and the FOURTH to earn a Ph.D. in Theoretical Physics in the nation. Who were your professors?
Him: Look at the time! Got a meeting. Bye!
Life experiences, in the end, overcome legacy and connection. We need a diversity of opinions to solve complex problems. Depending on the same structures and constructs to produce our next innovators isn't just shortsighted: it's magical thinking.
I now do think that 18 might be a little too young for a freshman on any campus and 22 a little too early for graduate school.
Just make the gap a little less than three decades!
You’re going to have to pay me… One Billion Dollars! … Sorry, One Hundred Billion Dollars! Photo: Warner Bros; Getty Images, Jonathan Chait, NY Mag, March 8, 2018
Topics: Civics, Civil Rights, Civilization, Climate Change, Democracy, Diversity in Science, Existentialism, Fascism, Human Rights, Women in Science
Megalomania: a mania for great or grandiose performance; a delusional mental illness that is marked by feelings of personal omnipotence and grandeur
Narcissistic Personality Disorder: a personality disorder characterized especially by an exaggerated sense of self-importance, persistent need for admiration, lack of empathy for others, excessive pride in achievements, and snobbish, disdainful, or patronizing attitudes
Useful Idiot: a naive or credulous person who can be manipulated or exploited to advance a cause or political agenda. E.g., It is one task of the KGB [in 1982] to apply its skills of secrecy and deception to projecting the Soviet party's influence. This it does through contacts with legal Communist Parties abroad, with groups sympathetic to Soviet goals, with do-gooders of the type that Lenin once described as "useful idiots" ….
—The Wall Street Journal, all the above from Merriam-Webster.com
Are we suffering from mass psychosis? Does it explain January 6, 2021, and the insanity that has descended from it? Was a substantial fraction of our nation led astray by a megalomaniacal, narcissistic useful idiot?
"A flood of negative emotions" is the business model of a lot of news outlets on the right. Determined to regain the audience lost after the Dominion settlement, Jesse Watters succeeds Tucker Carlson at the 8:00 hour, launching into a racist diatribe against the 44th president because they have to get their viewers back to repocket the $787.5 million dollars they had to pay out. Jesse, the "stable genius," forgot that Hawaii is our 50th state, but that occurred almost immediately after November 4, 2008.
When I was a senior in high school, 150 businesses owned everything we saw in print, on television, and heard on AM or FM radio. Now, with the expansion of the Internet, that ratio reduced EXPONENTIALLY to six corporations. With the expansion of the Internet, propaganda can be projected without a filter. Hitler deftly used radio to reach his masses, our current demagogue used Twitter until he was kicked off, and he was so devoted to this avenue he had to generate a knockoff to continue the conversation with his cult. Megalomaniacs never had it so good.
"Dr. Evil" was the antagonist in the Bond derivative "Austin Powers: International Man of Mystery" and its natural sequel, "The Spy Who Shagged Me." It's the type of flippant character that makes "team normal" think that no one could possibly be that over-the-top. Then, the year 2016 said, "Hold my beer."
Menticide: a systematic and intentional undermining of a person's conscious mind: BRAINWASHING - Merrian-Webster.com
Ms. Senko’s groundbreaking film examines the rise of right-wing media through the lens of her father, whose immersion in its daily propaganda had radicalized him. His new fanaticism rocked the very foundation of their family. She discovered that this phenomenon was occurring with alarming frequency in living rooms across America. The film reveals the consequences that this radicalized media is having on people, families, America, and the world.
Rush Limbaugh, of stogies, four traditional marriages (I guess he needed practice?), bombast and blatant racism (I guess why Clarence Thomas liked him?), was the Grand Pooh-Bah/Grand Dragon of an echo chamber that still persists long after his transition. Under the attack of menticide, 24/7 fearmongering on "the border," "CRT," "DEI," "Immigrants," "LGBT," "People of Color," and "Women with bodily autonomy" are the substitutes for "young bucks," "welfare queens," and "Barack the Magic Negro." Rush and his Zombie clones are ginning up fear on a regular basis, hacking everyone's reptilian brain stem made into mountains of gold and an unstable society. There must always be enemies for those who fear change and shadows.
At its core, this is about resources. Resources are subdivided by hierarchies so that certain universities that are "elite" (and beneficiaries of enslaved peoples) are picked first for employment after graduation. Most academic positions at universities seek the same graduates from the same elite PWI schools. Once the dust settles, universities will resegregate, and sadly will Fortune 500 businesses. Diversity, Equity, and Inclusion only mattered as slogans to avoid lawsuits post-George Floyd. With the end of Affirmative Action, what holds them accountable if, like campuses, the diversity among the workforce declines? Who would care?
Hierarchies have allowed societies from Egypt to England to rank and rate their populations into the worthy and the unworthy, the Brahmin and the Dalits, and the haves and the have-nots. "Occult" typically refers to magic, but it means hidden, and hiding knowledge is what gives a group self-designated as rulers of the rest their edge. "Conserving" the status quo allows for the continued acquisition of wealth beyond avarice and passing it on to their progeny. That means ignoring inequities, and climate crises, particularly heat waves in Texas's case since most of the workers affected happen to be BIPOC. The "Supreme Court" repealed Roe vs. Wade, Affirmative Action yesterday. What was left untouched: athletic programs, legacy enrollments, the children of employees, and millionaire gifts by benefactors like Fred Trump, that got his stupid son into Penn, and Jared Kushner, who, by his grades, couldn't have gotten into Harvard without daddy-the-jailbird's help. Roe and Affirmative Action were both decided by the Warren Court, an Eisenhower appointee. The Roberts "Court," appointed by "W," who lost the popular vote in 2000, and his Republican successor, who appointed three justices, losing the popular vote in BOTH elections, is determined to repeal the 20th Century and is coming for the 21st in LGBT rights. I use quotes in that the Roberts junta is neither supreme in the practice of law nor a court of jurisprudence. It is the extension of libertarian billionaires, the mythology propagandists of "reverse discrimination," and thus fascistic.
Ayn Rand, for the moment, has won. Welcome to 1953.
This paradigm of looking back to "great again" is unsustainable. We cannot solve income disparities going back to the fifties. No new technical designs will come from the back of the bus. The LGBT will not be returning to the closet to make closeted, cisgender couples feel comfortable in their camouflage bigotry, nor has a single-banned drag show stopped a single gun massacre in America. Women will not be returning to the kitchen and the state of barefoot and pregnant because that idyllic "Leave it to Beaver" Levittown never existed, except in "master-planned communities." Justice Ketanji Brown-Jackson's dissent is poetry.
We're not going back.
We have to figure out climate change, sustainability, and feeding eight billion souls that are growing at an exponential pace that will take us to nine billion in 2037 and ten billion in 2057. I won't be here, but my granddaughter will be. A lot of grandchildren will be. Hoping for starships is like wishing on magic lanterns.
There is no functional analog in nature to a billionaire. Insects run their colonies via pheromones, and the most significant member of the colony is the Queen: males are drones and sperm donors. Patriarchy is a human construct.
The U.N.'s Food and Agriculture Organization (FAO) nevertheless estimates that annual investments of $39 billion to $50 billion would be required to achieve a world without hunger by 2030. Source: Brookings Institution.
But they won't. The core of their Hoarding Disorder is maintaining the inequity that puts them at the apex of society's pyramid; they've mistaken a designed system as "natural," making them apex predators. Only the second part is correct.
“Overcoming poverty is not a gesture of charity. It is an act of justice. It is the protection of a fundamental human right, the right to dignity and a decent life.”
— Nelson Mandela
I'm revamping the SAT program, which ended during the pandemic, for as long as it lasts, with an online component. We'll also discuss strategies to apply to the colleges and universities they desire. The youth are relevant to our shared future and survival.
On a dysfunctional planet, billionaire status is irrelevant.
“Struggle is a never-ending process. Freedom is never really won; you earn it and win it in every generation.”
— Coretta Scott King
“Tyranny, like hell, is not easily conquered; yet we have this consolation with us, that the harder the conflict, the more glorious the triumph.”
Chip off the old block: Intel’s Tunnel Falls chip is based on silicon spin qubits, which are about a million times smaller than other qubit types. (Courtesy: Intel Corporation)
Intel – the world’s biggest computer-chip maker – has released its newest quantum chip and has begun shipping it to quantum scientists and engineers to use in their research. Dubbed Tunnel Falls, the chip contains a 12-qubit array and is based on silicon spin-qubit technology.
The distribution of the quantum chip to the quantum community is part of Intel’s plan to let researchers gain hands-on experience with the technology while at the same time enabling new quantum research.
The first quantum labs to get access to the chip include the University of Maryland, Sandia National Laboratories, the University of Rochester, and the University of Wisconsin-Madison.
The Tunnel Falls chip was fabricated on 300 mm silicon wafers in Intel’s “D1” transistor fabrication facility in Oregon, which can carry out extreme ultraviolet lithography (EUV) and gate and contact processing techniques.
The underground Onkalo repository in Finland is designed to safely and permanently store hazardous, radioactive waste. Credit: Posiva
Topics: Environment, High Energy Physics, Nuclear Power
Finland and the former Yugoslavia adopted nuclear energy only four years apart. In 1971 Finland began construction of its first nuclear plant, Loviisa, and the first of two planned reactors went into commercial operation in 1977. Yugoslavia started building the Krško plant in 1975. In the 1980s, both countries acknowledged the need for a long-term nuclear waste management strategy and started making plans for permanent disposal repositories.
Fast-forward four decades, and Finland is on the verge of becoming the world’s first country to achieve permanent deep geological disposal for spent nuclear fuel, the highly radioactive waste that contains uranium, plutonium, fission products, and other heavy elements. Meanwhile, the fate of the spent fuel generated at Krško, which is jointly owned by former Yugoslavian republics Croatia and Slovenia, is still very much unknown. Both countries have yet to get a handle on even low-level radioactive waste, including contaminated clothes and water filters, which is slowly overwhelming storage facilities and threatening to halt plant operations.
The US has long struggled to find a final resting place for its nuclear waste, to the point that it is now spending billions of dollars to reimburse plant operators for the costs of storing spent fuel. The dramatically different outcomes of Finland and Croatia’s lengthy searches for permanent nuclear waste solutions are reflections of the varied ways in which this long-standing worldwide problem is being tackled by the nations of the European Union. Whereas Finland, Sweden, and France are expected to open permanent underground spent-fuel repositories by the early 2030s, 12 other nuclear EU countries are far behind, planning to open deep geological disposal facilities sometime between the 2040s and the 2100s. According to a 2019 European Commission report on the implementation of its nuclear waste directive, only a few of those nations have made progress in selecting a site.
NANO 761: Introduction to Nano Energy, Lecture 4 - Lithium Ion Battery, Cathode to Anode, Spring 2018, JSNN
Topics: Battery, Climate Change, Green Tech, History, Nobel Laureate, Nobel Prize
John B. Goodenough, a professor at The University of Texas at Austin who is known around the world for the development of the lithium-ion battery, died Sunday at the age of 100. Goodenough was a dedicated public servant, a sought-after mentor, and a brilliant yet humble inventor.
His discovery led to the wireless revolution and put electronic devices in the hands of people worldwide. In 2019, Goodenough made national and international headlines after being awarded the Nobel Prize in chemistry for his battery work, an award many of his fans considered a long time coming, especially as he became the oldest person to receive a Nobel Prize.
“John’s legacy as a brilliant scientist is immeasurable — his discoveries improved the lives of billions of people around the world,” said UT Austin President Jay Hartzell. “He was a leader at the cutting edge of scientific research throughout the many decades of his career, and he never ceased searching for innovative energy-storage solutions. John’s work and commitment to our mission are the ultimate reflection of our aspiration as Longhorns — that what starts here changes the world — and he will be greatly missed among our UT community.”
Until the announcement of his selection as a Nobel laureate, Dr. Goodenough was relatively unknown beyond scientific and academic circles and the commercial titans who exploited his work. He achieved his laboratory breakthrough in 1980 at the University of Oxford, where he created a battery that has populated the planet with smartphones, laptop, and tablet computers, lifesaving medical devices like cardiac defibrillators, and clean, quiet plug-in vehicles, including many Teslas, that can be driven on long trips, lessen the impact of climate change and might someday replace gasoline-powered cars and trucks.
Like most modern technological advances, the powerful, lightweight, rechargeable lithium-ion battery is a product of incremental insights by scientists, lab technicians, and commercial interests over decades. But for those familiar with the battery’s story, Dr. Goodenough’s contribution is regarded as the crucial link in its development, a linchpin of chemistry, physics, and engineering on a molecular scale.
Before I met Professor Steve Wienberg, I had read my cousin Wilbur's copy of "The First Three Minutes." Little did I know that he would autograph it for me or that I would meet him, along with his former student (and my friend, Dr. Mark G. Raizen), at the National Society of Black Physicists in the fall of 2011 in Austin, Texas.
I never met John B. Goodenough, but I did study his theories in a class on battery nanomaterials at my graduate school. "Engineering on a molecular scale" is essentially what I studied in Nanoengineering, as batteries will only store charges longer and get better at the nanomaterials level. This is the way we will make the transition from fossil fuels to cleaner, more income-equitable options.
Ph.D. seemed so far away until the Hooding Ceremony. A few things about the tributes struck and moved me deeply:
He and his wife had no children, but Dr. Goodenough was enthusiastic about teaching, mentoring, and giving back. UT said he often donated any honorarium to the university.
He was from a home that, from the NY Times, was neglectful to him and indifferent.
He suffered from dyslexia and overcame it to achieve a Ph.D. in 1952 and a Nobel Prize at 97 in 2019. Everyone has their struggles, but for the love of science, he overcame them without excuses. A HUGE part of obtaining a degree in a STEM field is pure grit. Some of us quit too early from our dreams or debase our abilities before we even try.
The modern age we take for granted is possible because of humble spirits in laboratories, coding software, at dry erase boards full of equations who pushed a little further than any of their self-doubts. We are fortunate they pressed forward.
Nanos gigantum humeris insidentes - First recorded by John of Salisbury in the twelfth century and attributed to Bernard of Chartres. Also commonly known by the letters of Isaac Newton: "If I have seen further, it is by standing on the shoulders of giants."
John B. Goodenough in 2017. Two years later, when he was 97 and still active in research at the University of Texas at Austin, he became the oldest Nobel Prize winner in history. Credit...Kayana Szymczak for The New York Times
When X-rays (blue color) illuminate an iron atom (red ball at the center of the molecule), core-level electrons are excited. X-ray excited electrons are then tunneled to the detector tip (gray) via overlapping atomic/molecular orbitals, which provide elemental and chemical information about the iron atom. Credit: Saw-Wai Hla
A team of scientists from Ohio University, Argonne National Laboratory, the University of Illinois-Chicago, and others, led by Ohio University Professor of Physics, and Argonne National Laboratory scientist, Saw Wai Hla, have taken the world's first X-ray SIGNAL (or SIGNATURE) of just one atom. This groundbreaking achievement could revolutionize the way scientists detect materials.
Since its discovery by Roentgen in 1895, X-rays have been used everywhere, from medical examinations to security screenings in airports. Even Curiosity, NASA's Mars rover, is equipped with an X-ray device to examine the material composition of the rocks on Mars. An important usage of X-rays in science is to identify the type of materials in a sample. Over the years, the quantity of materials in a sample required for X-ray detection has been greatly reduced thanks to the development of synchrotron X-rays sources and new instruments. To date, the smallest amount one can X-ray a sample is in an attogram, which is about 10,000 atoms or more. This is due to the X-ray signal produced by an atom being extremely weak, so conventional X-ray detectors cannot be used to detect it. According to Hla, it is a long-standing dream of scientists to X-ray just one atom, which is now being realized by the research team led by him.
"Atoms can be routinely imaged with scanning probe microscopes, but without X-rays, one cannot tell what they are made of. We can now detect exactly the type of a particular atom, one atom-at-a-time, and can simultaneously measure its chemical state," explained Hla, who is also the director of the Nanoscale and Quantum Phenomena Institute at Ohio University. "Once we are able to do that, we can trace the materials down to the ultimate limit of just one atom. This will have a great impact on environmental and medical sciences and maybe even find a cure that can have a huge impact on humankind. This discovery will transform the world."
Their paper, published in the scientific journal Nature on May 31, 2023, and gracing the cover of the print version of the scientific journal on June 1, 2023, details how Hla and several other physicists and chemists, including Ph.D. students at OHIO, used a purpose-built synchrotron X-ray instrument at the XTIP beamline of Advanced Photon Source and the Center for Nanoscale Materials at Argonne National Laboratory.
Topics: Civilization, Climate Change, Existentialism, Science Fiction, Star Trek
Critical thinking is the intellectually disciplined process of actively and skillfully conceptualizing, applying, analyzing, synthesizing, and/or evaluating information gathered from, or generated by, observation, experience, reflection, reasoning, or communication, as a guide to belief and action. In its exemplary form, it is based on universal intellectual values that transcend subject matter divisions: clarity, accuracy, precision, consistency, relevance, sound evidence, good reasons, depth, breadth, and fairness.
Magical thinking is the belief that one’s ideas, thoughts, actions, words, or use of symbols can influence the course of events in the material world. Magical thinking presumes a causal link between one’s inner, personal experience and the external physical world. Examples include beliefs that the movement of the Sun, Moon, and wind or the occurrence of rain can be influenced by one’s thoughts or by the manipulation of some type of symbolic representation of these physical phenomena.
Testifying before Congress, Carl Sagan called out the mainstream media of his day as to why there was (and still is) a daily horoscope, but not even a weekly science column. When the Nobel Prizes come out - I try to post them all: science categories, Economics, Literature, and Peace - you're likely going to see more here than you will on traditional media. It is still now rare, as it was during Carl's crusade for science literacy. I can remember when "A&E" and "TLC" were the acronyms for Arts & Entertainment and The Learning Channel, not the homes of Duck Dynasty, or Honey Boo-Boo. Sagan would be woefully disappointed.
Which is more likely a problem that can be tackled and solved: climate change or warp drive? Granted, I'm a Trekkie from TOS days, The Animated Series (TAS), TNG, DS9, VOY, Enterprise, Discovery, Lower Decks, and Strange New Worlds. As much as I enjoy the storytelling, similar to Ali Baba, or Aladdin, I'm not interested in the physics of flying carpets, because that is a plot device, like inertia dampeners or Heisenberg compensators. Yes, there's a lot of theoretical research on warp field mechanics since the 1994 paper by Miguel Alcubierre. At the risk of sounding like a curmudgeon, the efforts will likely yield something close to 0.1 - 0.25c, which is pretty fast, leagues beyond our current rocket speeds. The reason Trek did a LOT of time travel is, superluminal speeds would permit it, and eventually the Grandfather Paradox: A begets B, B begets C, but if C travels back in time, and kills A, did C ever make the trip if he never existed (see: Causality)?
We will probably "boldly go" to the Asteroid Belt, Mars, and the moons of Jupiter or Saturn. With eight billion souls and climbing, we have a lot of physics problems to solve on Gaia.
However, exploration of our solar system cannot happen if, beyond sense, we allow the planet's temperatures to continue to climb.
A.1 Human activities, principally through emissions of greenhouse gases, have unequivocally caused global warming, with the global surface temperature reaching 1.1°C above 1850-1900 in 2011-2020. Global greenhouse gas emissions have continued to increase, with unequal historical and ongoing contributions arising from unsustainable energy use, land use and land-use change, lifestyles and patterns of consumption and production across regions, between and within countries, and among individuals (high confidence). {2.1, Figure 2.1, Figure 2.2}
A.1.1 Global surface temperature was 1.09°C [0.95 to 1.20] °C5 higher in 2011-2020 than 1850-19006, with larger increases over land (1.59 [1.34 to 1.83] °C) than over the ocean (0.88 [0.68 to 1.01] °C). Global surface temperature in the first two decades of the 21st century (2001-2020) was 0.99 [0.84 to 1.10] °C higher than 1850-1900. Global surface temperature has increased faster since 1970 than in any other 50-year period over at least the last 2000 years (high confidence). {2.1.1, Figure 2.1}
A.1.2 The likely range of total human-caused global surface temperature increase from 1850-1900 to 2010-20197 is 0.8°C to 1.3°C, with a best estimate of 1.07°C. Over this period, it is likely that well-mixed greenhouse gases (GHGs) contributed a warming of 1.0°C to 2.0°C8, and other human drivers (principally aerosols) contributed a cooling of 0.0°C to 0.8°C, natural drivers changed global surface temperature by –0.1°C to +0.1°C, and internal variability changed it by –0.2°C to +0.2°C. {2.1.1, Figure 2.1}
Our science focus should be here on Terra Firma and the pursuit of continuing human civilization. Without it, civilization, sustainability, and space travel is impossible.
Critical thinking will help us all survive. We will have to cooperate, make lasting changes, reduce income inequality; eliminate global poverty, remediate houseless citizens, and proceed forward, changing the very structure of our civilization, what we focus on as important and esteem as admirable. Billionaires are not superheroes, and beyond fantasy roles, have no function or analog in nature.
Magical thinking, believing that the climate crisis does not exist, hoarding resources while refusing to pay taxes in one's home country and hiding it in shelters overseas from yours, whistling past the climate graveyard, won't.
Gordon Moore, the co-founder of Intel who died earlier this year, is famous for forecasting a continuous rise in the density of transistors that we can pack onto semiconductor chips. James McKenzie looks at how “Moore’s law” is still going strong after almost six decades but warns that further progress is becoming harder and ever more expensive to sustain.
But our ability to build such tiny, powerful chips shouldn’t surprise us. After all, the engineer Gordon Moore – who died on 24 March this year, aged 94 – famously predicted in 1965 that the number of transistors we can squeeze onto an integrated circuit ought to double yearly. Writing for the magazine Electronics (38 114), Moore reckoned that by 1975 it should be possible to fit a quarter of a million components onto a single silicon chip with an area of one square inch (6.25 cm2).
Moore’s prediction, which he later said was simply a “wild extrapolation”, held true, although, in 1975, he revised his forecast, predicting that chip densities would double every two years rather than every year. What thereafter became known as “Moore’s law” proved amazingly accurate, as the ability to pack ever more transistors into a tiny space underpinned the almost non-stop growth of the consumer electronics industry. In truth, it was never an established scientific “law” but more a description of how things had developed in the past as well as a roadmap that the semiconductor industry imposed on itself, driving future development.
Topics: Astronautics, ESA, History, NASA, Space Exploration, Spaceflight, Women in Science
The first female cosmonaut flew years before NASA put a man on the Moon and decades before any other country would send a woman into orbit.
On a drab Sunday in Moscow in November 1963, a dark-suited man stood beside his veiled bride, whose bashful smile betrayed the merest hint of nerves. Despite the extraordinarily lavish surroundings of the capital’s Wedding Palace, it might have been any normal wedding, but for one thing: Both groom and bride were cosmonauts, members of Russia’s elite spacefaring fraternity.
Two years earlier, that bride, Valentina Tereshkova, had been a factory seamstress and amateur parachutist with more than 100 jumps to her name when she’d volunteered for the cosmonaut program. Now, the 26-year-old, whom TIME magazine dubbed “a tough-looking Ingrid Bergman,” was among the most famous women in the world, an accolade she had earned just months ago by becoming the first female to leave the planet.
Sixty years on from her pioneering Vostok 6 mission, more than 70 women from around the globe have followed in Tereshkova’s footsteps, crossing that ethereal boundary between ground and space. Some have commanded space missions, helmed space stations, made spacewalks, spent more than a cumulative year of their lives in orbit, and even flown with a prosthesis. And women from Britain, Iran, and South Korea have become their countries’ first national astronauts, ahead of their male counterparts.
Figure 1 Overcoming scientific racism as a Community. (Top) This figure depicts the barriers Black scientists face in academia. (Bottom) The bottom part of the figure depicts Black scientists overcoming those challenges.
Topics: Civil Rights, Diversity, Diversity in Science, Women in Science
We are 52 Black scientists. Here, we establish the context of Juneteenth in STEMM and discuss the barriers Black scientists face, the struggles they endure, and the lack of recognition they receive. We review racism’s history in science and provide institutional-level solutions to reduce the burdens on Black scientists.
Keywords
Juneteenth, diversity, STEMM, scientific racism
Introduction
June 19, 1865, independence day, commonly referred to as Juneteenth, celebrates the freedom of the last large body of enslaved Black Americans following the American Civil War. Although the Emancipation Proclamation, which declared free those slaves residing in states in open rebellion against the United States, took effect more than 2 years prior, it was not until Union troops liberated Texas that more than 250,000 slaves gained their freedom. However, some in the United States remained enslaved through convict leasing and sharecropping. Following Juneteenth came the Reconstruction Era (1865–1877) in the United States, a tumultuous time when the North and South began reunification and ideologies of freedom and equality clashed, leading to the ratification of the 14th and 15th Amendments to the Constitution to protect the rights of Black peoples—defined here as people of ancestral African origin, including peoples of African American, African, Afro-Caribbean, and mixed ancestry—in the face of race riots, lynchings, and black codes (restrictive laws designed to limit the advancement of Black individuals to retain cheap labor), including Jim Crow laws. Black and White America developed along segregated and unequal paths. As segregation and intentional underinvestment occurred across education, many Black individuals did not learn to read or write, hampering career opportunities. Across the mid-to-late 1900s, the powerful civil rights movements led to the repeal of many segregationist laws. Even so, some of their effects remained unchanged: Black individuals still faced discrimination and unequal opportunities for education, and to this day, Black communities lack resources.
It took over 150 years for Juneteenth to be recognized as a federal holiday in the summer of 2021, following multiple police killings of Black individuals that gained media prominence in the preceding year. Juneteenth recognizes and celebrates freedom, civil rights, and the potential for the advancement of Black people in the United States. Yet, it also serves as a day of reflection and hopes that a nation might someday live up to its core founding principle—equality for all. Shortly after freeing Black Americans, the US state legislatures enacted harsh laws to curtail their progress; thus, as formal slavery declined, institutional slavery arose. These laws have had generational impacts: today, Black scientists continue to suffer institutional slavery, leading to lower pay, lesser access to resources, and fewer advancement opportunities. In addition to cultural erasure, undervalue, isolation, stereotype threat, and tokenism, Black scientists face many obstacles to attaining education and persisting in the fields of science, technology, engineering, mathematics, and medicine (STEMM). As the official correspondence from The White House states,“Juneteenth not only commemorates the past. It calls us to action today.” Juneteenth is a rallying call for all, but it is especially a call for action from scientists. Even though scientific innovation prospers from a richly diverse field, science has historically existed as a bastion for harboring racism.
In this commentary, we seek to explain some of the history of Black individuals in the United States. This includes the initial gap in and continued barriers to income attainment, which have inhibited their growth. We discuss the racist institutions that still exist in science, including lack of recognition for awards and disparities in funding rates. We also consider the toll that institutional racism takes on the mental health of Black individuals, which has unfortunately led to suicides. Finally, we note the double binds for those with intersectionality—e.g., those underrepresented by a combination of gender, sexual orientation, disability status, and race. Together, these limitations inhibit the progression of individuals through the elitist STEMM pipeline.1 Given the continued exclusion of Black scientists at different levels of STEMM training, it is important to recognize the relevance of Juneteenth as well as how it may contribute to future improvements. We offer steps that institutions and wider bodies should take to reduce the impact of racism in science (Figure 1). Importantly, we consider Juneteenth a growth pillar and propose steps to improve mentoring, institutional support, and training to reduce remaining institutional barriers.
Excited helium nuclei inflate like balloons, offering physicists a chance to study the strong nuclear force which binds the nucleus’s protons and neutrons. Kristina Armitage/Quanta Magazine
Topics: Modern Physics, Nobel Prize, Particle Physics, Quantum Mechanics, Steven Weinberg, Theoretical Physics
A new measurement of the strong nuclear force, which binds protons and neutrons together, confirms previous hints of an uncomfortable truth: We still don’t have a solid theoretical grasp of even the simplest nuclear systems.
To test the strong nuclear force, physicists turned to the helium-4 nucleus, which has two protons and two neutrons. When helium nuclei are excited, they grow like an inflating balloon until one of the protons pops off. Surprisingly, in a recent experiment, helium nuclei didn’t swell according to plan: They ballooned more than expected before they burst. A measurement describing that expansion, called the form factor, is twice as large as theoretical predictions.
“The theory should work,” said Sonia Bacca, a theoretical physicist at the Johannes Gutenberg University of Mainz and an author of the paper describing the discrepancy, which was published in Physical Review Letters. “We’re puzzled.”
For many years, physicists didn’t understand how to use the strong force to understand the stickiness of protons and neutrons. One problem was the bizarre nature of the strong force — it grows stronger with increasing distance rather than slowly dying off. This feature prevented them from using their usual calculation tricks. When particle physicists want to understand a particular system, they typically parcel out a force into more manageable approximate contributions, order those contributions from most important to least important, then simply ignore the less important contributions. With the strong force, they couldn’t do that.
Then in 1990, Steven Weinbergfound a way to connect the world of quarks and gluons to sticky nuclei. The trick was to use an effective field theory — a theory that is only as detailed as it needs to be to describe nature at a particular size (or energy) scale. To describe the behavior of a nucleus, you don’t need to know about quarks and gluons. Instead, at these scales, a new effective force emerges — the strong nuclear force transmitted between nucleons by the exchange of pions.
From the Twilight Zone season 3, episode 8, "It's a Good Life." Billy Mumy plays an evil little boy who terrorizes his neighborhood with his magical powers for any slight.
Jesse Pinkman: You don't want a criminal lawyer… you want a "criminal" lawyer,
Jesse Pinkman: What, dude, wouldn't take a bribe? [That] dude in there? Saul Goodman. we're talking about?
Walter White: Yeah. "Morally outraged," he said. Threatened to call the police.
Jesse Pinkman: Wait, and Badger is gonna spill?
Walter White: Like the Exxon Valdez.
Jesse Pinkman: So, what do we do about it?
Aaron Paul: Jesse Pinkman on "Breaking Bad" and "Better Call Saul," IMDB.
From the 2019 documentary, Where's My Roy Cohn,: "Roy Cohn personified the dark arts of American politics, turning empty vessels into dangerous demagogues - from Joseph McCarthy to his final project, Donald J. Trump." IMDB
In order to understand the mind of Donald Trump, one must acquaint themselves with the life and legacy of his mentor, Roy Cohn. He’s the notorious lawyer who tampered with evidence in order to ensure that Julius and Ethel Rosenberg were sent to the electric chair, despite the fact that their shared status as dangerous Russian spies is still hotly debated. Cohn coaxed what was later alleged as a false testimony from Ethel’s brother, David Greenglass, that affirmed her complicity in the eyes of the court. Has enough evidence subsequently come to light connecting her with Julius’ role as a recruiter of Russian spies, and have the nuclear secrets reportedly stolen by Julius been found to be of much value?
Bully. Coward. Victim. The Story of Roy Cohn, Matt Fagerholm, Roger Ebert
David Frum said it succinctly: "The President is a Crook," in this case, the former president tried to, and is still trying to foment an insurrection because he ran and lost in 2020. Then, and now, we have the choice between the man, the presidency, and the rule of law.
The Constitution is essentially a property document. Despite the genius we proffer to the founding fathers, they were humans in the eighteenth century. The citizens they were writing to were wealthy property owners like themselves, many of them attaining that wealth through the ownership and trade of human chattel. Their women didn't have the right to vote until the suffrage movement produced the 19th Amendment, throwing the black women who worked on suffrage "under the bus." My mother and sister didn't get the full right of citizenship until the 1965 Voting Rights Act. I was three years old.
The United States Constitution is a remarkable document written by men steeped in education but fallible. No document nor dogma can anticipate changes in the world and society. Barack Hussein Obama would have shocked them. They would have guffawed at a presidential candidacy of a Hillary Clinton.
Unless you've been on Mars or hiding under a rock, the twice-impeached president has now been twice indicted for criminal activity. After losing to E. Jean Carrol in a case accusing him of sexual assault, he doubled down on a CNN Town Hall, calling her a "whack job," and she and her lawyer rightly sued again. The backlash and poor ratings afterward probably contributed to the firing of CNN's former CEO, Chris Licht.
After getting his first indictment for paying off an adult film star and playboy centerfold, affairs he covered up while his third wife was pregnant with his fifth child, he strutted like a peacock. After being indicted for stealing classified information, he held a rally at his club in Bedminster, New Jersey, where arguably, one of his espionage crimes was recorded on tape.
What. is. WRONG. With. HIM? For that matter, what is wrong with our fellow citizens?
Mary Trump wrote "Too Much And Never Enough" about her malignant narcissist uncle. In chapter 3, titled "The Great I Am," he was sent to military school in Newburg, New York, after getting aggressive with his mother and bullying issues at the age of thirteen.
"Finally, by 1959, Donald's misbehavior—fighting, bullying, arguing with teachers—had gone too far," Mary Trump writes.
Fred Trump was on the board of trustees for the Kew-Forest prep school that Donald Trump was attending.
"Fred didn't mind Donald's acting out, but it had become intrusive and time-consuming for him," Mary Trump wrote. "When one of his fellow board members at Kew-Forest recommended sending Donald to New York Military Academy to rein him in, Fred went along with it."
In the book, Mary Trump wrote that Trump's mother, Mary Anne Trump, "didn't fight for her son to stay home ... a failure Donald couldn't help but notice."
"Over Donald's objections, he was enrolled at NYMA," she writes. "The other kids in the family referred to NYMA as a 'reform school'—it wasn't prestigious like St. Paul's, which (older brother) Freddy had attended."
"Nobody sent their sons to NYMA for a better education, and Donald understood it rightly as a punishment," Mary Trump wrote.
The syndrome is characterized by "excessive, self-centered, and immature behavior". It includes a lack of consideration for other people, recurrent temper tantrums, an inability to handle the delay of gratification, demands for having one's own way, obstructiveness, and manipulation to get their way. Wikipedia
Professor William T. Kelley at the Wharton School of Business, let's just say, didn't think highly of the 45th president's intellect (see Mystery 2). His fellow Wharton students spent their weekends in study groups. Young Trump went back to New York on weekends, tutored likely by criminals that Roy Cohn represented, inspired to create a fantasy world from the Godfather trilogy popular in his youth. John Gotti was the original "Teflon Don" until he, like Al Capone, was eventually caught. He practically struts like Marlon Brando.
"It's not theirs. It's mine!" He is indicted on 37 counts, 31 for espionage. He is a criminal, but in a certain sense, he is the epoch of the spoiled brat grown-up physically. The indictment happened a day before his 77th birthday. He had issues getting lawyers in Florida, aided by his reputation of stiffing anyone who works for him and his childish stubbornness not to follow counsel: silence is golden, but he can't shut up.
On the calendar, he's a late-stage septuagenarian. Emotionally, he is a child. He is Billy Mumy with the magical power to manipulate an entire constituency that the GOP didn't know they had. His wand is explicit bigotry and cruelty; his power is to give those who will follow him over the abyss cover and approval to be their worst selves. No one liked Mumy's character portrayal, and other than fellow sociopaths, no one [really] likes him.
A political party following the machinations of an impulsive being is not sustainable. 2024 will mark 20 years since the GOP won both the electoral college and the popular vote. That can lead a party to desperation. And desperation leads to demagogues and violence.
In 1848, French chemist Louis Pasteur discovered that some molecules essential for life exist in mirror-image forms, much like our left and right hands. Today, we know biology chooses just one of these “chiral” forms: DNA, RNA, and their building blocks are all right-handed, whereas amino acids and proteins are all left-handed. Pasteur, who saw hints of this selectivity, or “homochirality,” thought magnetic fields might somehow explain it, but its origin has remained one of biology’s great mysteries. Now, it turns out Pasteur may have been onto something.
In three new papers, researchers suggest magnetic minerals common on early Earth could have caused key biomolecules to accumulate on their surface in just one mirror image form, setting off positive feedback that continued to favor the same form. “It’s a real breakthrough,” says Jack Szostak, an origin of life chemist at the University of Chicago who was not involved with the new work. “Homochirality is essential to get biology started, and this is [a possible]—and I would say very likely—solution.”
Chemical reactions are typically unbiased, yielding equal amounts of right- and left-handed molecules. But life requires selectivity: Only right-handed DNA, for example, has the correct twist to interact properly with other chiral molecules. To get [life], “you’ve got to break the mirror, or you can’t pull it off,” says Gerald Joyce, an origin of life chemist and president of the Salk Institute for Biological Studies.
Over the past century, researchers have proposed various mechanisms for skewing the first biomolecules, including cosmic rays and polarized light. Both can cause an initial bias favoring either right- or left-handed molecules, but they don’t directly explain how this initial bias was amplified to create the large reservoirs of chiral molecules likely needed to make the first cells. An explanation that creates an initial bias is a good start but “not sufficient,” says Dimitar Sasselov, a physicist at Harvard University and a leader of the new work.
Depending on who you’re speaking with at the time, the industry’s adoption of chiplet technology to extend the reach of Moore’s Law is either continuing to roll along or is facing the absence of a commercial market. However, both assertions cannot be true. What is true is that chiplets have been used to build at least some commercial ICs for more than a decade and that semiconductor vendors continue to expand chiplet usability and availability. At the same time, the interface and packaging standards that are essential to widespread chiplet adoption remain in flux.
On the positive side of this question are existence proofs. Xilinx, now AMD, has been using 2.5D chiplet technology with large silicon interposers to make FPGAs for more than a decade. The first commercial use of this packaging technology appeared back in 2011 when Xilinx announced its Virtex-7 2000T FPGA, a 2-Mgate device built from four FPGA semiconductor tiles bonded to a silicon interposer. Xilinx jointly developed this chiplet-packaging technology with its foundry, TSMC, which now offers this CoWoS (Chip-on-Wafer-on-Substrate) interposer-and-chiplet technology to its other foundry customers. TSMC customers that have announced chiplet-based products include Broadcom and Fujitsu. AMD is now five generations along the learning curve with this packaging technology, which is now essential to the continued development of bigger and more diverse FPGAs. AMD will be presenting an overview of this multi-generation, chiplet-based technology, including a status update at the upcoming Hot Chips 2023 conference being held at Stanford University in Palo Alto, California, in August.
Similarly, Intel has long been developing and using chiplet technology in its own packaged ICs. The company has been using its 2.5D EMIB (embedded multi-die interconnect bridge) chiplet-packaging technology for years to manufacture its Stratix 10 FPGAs. That technology has now spread throughout Intel’s product line to include CPUs and SoCs. The poster child for Intel’s chiplet-packaging technologies is unquestionably the company’s Ponte Vecchio GPU, which packages 47 active “tiles” – Intel’s name for chiplets – in a multi-chip package. These 47 dies are manufactured by multiple semiconductor vendors using five different semiconductor process nodes, all combined in one package using Intel’s EMIB 2.5D and 3D Foveros chiplet-packaging techniques to produce an integrated product with more than 100 billion transistors – something not currently possible on one silicon die. Intel is now opening these chiplet-packaging technologies to select customers through IFS – Intel Foundry Services – and consequently expanding the size and number of its packaging facilities.
A new study by KTH Royal Institute of Technology and Stanford University revises of our understanding of quantum vortices in superconductors. Pictured an artist’s depiction of quantum vortices. Credit: Greg Stewart, SLAC National Accelerator Laboratory
Topics: Modern Physics, Quantum Mechanics, Research, Superconductors
Within superconductors, little tornadoes of electrons, known as quantum vortices, can occur, which have important implications in superconducting applications such as quantum sensors. Now a new kind of superconducting vortex has been found, an international team of researchers reports.
Egor Babaev, professor at KTH Royal Institute of Technology in Stockholm, says the study revises the prevailing understanding of how electronic flow can occur in superconductors, based on work about quantum vortices that was recognized in the 2003 Nobel Prize award. The researchers at KTH, together with researchers from Stanford University, TD Lee Institute in Shanghai, and AIST in Tsukuba, discovered that the magnetic flux produced by vortices in a superconductor can be divided up into a wider range of values than thought.
That represents a new insight into the fundamentals of superconductivity and also potentially can be applied in superconducting electronics.
A vortex of magnetic flux happens when an external magnetic field is applied to a superconductor. The magnetic field penetrates the superconductor in the form of quantized magnetic flux tubes, which form vortices. Babaev says that originally research held that quantum vortices pass through superconductors each carrying one quantum of magnetic flux. But arbitrary fractions of quantum flux were not a possibility entertained in earlier theories of superconductivity.
Using the Superconducting Quantum Interference Device (SQUID) at Stanford University Babaev's co-authors, research scientist Yusuke Iguchi and Professor Kathryn A. Moler, showed at a microscopic level that quantum vortices can exist in a single electronic band. The team was able to create and move around these fractional quantum vortices, Moler says.
"Professor Babaev has been telling me for years that we could see something like this, but I didn't believe it until Dr. Iguchi actually saw it and conducted a number of detailed checks," she says.
The galaxy observed by Webb shows an Einstein ring caused by a phenomenon known as gravitational lensing. Credit: S. Doyle / J. Spilker
Topics: Astrobiology, Biology, James Webb Space Telescope, Space Exploration
Researchers have detected complex organic molecules in a galaxy more than 12 billion light-years away from Earth—the most distant galaxy in which these molecules are now known to exist. Thanks to the capabilities of the recently launched James Webb Space Telescope and careful analyses from the research team, a new study lends critical insight into the complex chemical interactions that occurred in the first galaxies in the early universe.
University of Illinois Urbana-Champaign astronomy and physics professor Joaquin Vieira and graduate student Kedar Phadke collaborated with researchers at Texas A&M University and an international team of scientists to differentiate between infrared signals generated by some of the more massive and larger dust grains in the galaxy and those of the newly observed hydrocarbon molecules.
The study findings are published in the journal Nature.
"This project started when I was in graduate school studying hard-to-detect, very distant galaxies obscured by dust," Vieira said. "Dust grains absorb and re-emit about half of the stellar radiation produced in the universe, making infrared light from distant objects extremely faint or undetectable through ground-based telescopes."
In the new study, the JWST received a boost from what the researchers call "nature's magnifying glass"—a phenomenon called gravitational lensing. "This magnification happens when two galaxies are almost perfectly aligned from the Earth's point of view, and light from the background galaxy is warped and magnified by the foreground galaxy into a ring-like shape, known as an Einstein ring," Vieira said.
