The Galactic Society’s Post

Today is June 25. It's the birthday of #JohannesHansDanielJensen, the man who proposed the shell theory of nuclear structure of nucleons - - - (Scientist of the Day - 25 June) In 1949, Jensen proposed the #shell theory of nuclear structure of #nucleons - protons and neutrons - grouped in onion-like layers of concentric shells. He suggested that the nucleons spun on their own axis while they moved in an orbit within their shell and that certain patterns in the number of nucleons per shell made the nucleus more stable. Scientists already knew that the #electrons orbiting the nucleus were arranged in different shells. For his model of the nucleus, Jensen shared the 1963 #NobelPrize in physics (with #MariaGoeppertMayer, who arrived at the same hypothesis independently in the U.S.; and #EugeneWigner for unrelated work in nuclear and particle physics). Jensen was a guest professor at the University of Wisconsin-Madison (1951), the Institute for Advanced Study (1952), University of California, Berkeley (1952), Indiana University (1953), California Institute of Technology (1953), University of Minnesota, Twin Cities (1956), and University of California, San Diego (1961).

⚛️The Gold Foil Experiment by Geiger and Marsden: A Moment in Science History! 💫 In 1909, Hans Geiger and Ernest Marsden, under the guidance of Ernest Rutherford, opened the doors to nuclear physics with a simple gold foil. This experiment revealed the secrets at the heart of the atom, introducing us to the dense nucleus and sparking a revolution in modern physics. This small step showed that most of the atom is empty space and that positive charge is concentrated in a tiny, dense nucleus. This discovery laid the foundations for nuclear energy and technology, marking a giant leap in the advancement of science and humanity. Geiger and Marsden's bold move continues to inspire scientists today. Their discovery underscores the power of science and the boundless nature of curiosity. #SciencePassion #NuclearPhysics #GeigerMarsden #ScientificRevolution #Inspiration Find the original paper attached for those interested in diving deeper into this groundbreaking experiment.

A Primeval Force Once Ruled the Universe—and Scientists Have Revived It Mind-blowing experiments are bringing ancient cosmic conditions into modern labs. BY DARREN ORF JUL 08, 2024 9:00 AM EDT In the very early, very hot moments of the universe, the electromagnetic and weak nuclear forces were actually the same force—the electroweak interaction. Scientists can now study this interaction using particle accelerators, such as the LHC, and a new study recently fined tuned the precision measurements of what is known as the electroweak mixing angle, which tells us a lot—both about these forces and about how the Higgs mechanism delineates mass among particles. This study also highlights the importance of building a future electron-positron collider (a.k.a. a “Higgs factory”), which the particle physics world considers a top priority.

On August 2, 1939, Albert Einstein penned a letter to President Franklin D. Roosevelt, sparking the creation of the Manhattan Project and the development of the atomic bomb. Here's a glimpse into its profound impact: The Letter's Content: Einstein warned of the potential for powerful bombs from uranium, influenced by fears of Germany's intentions. This led to the US embarking on a $2 billion top-secret research project—the Manhattan Project. Significant Outcomes: The project, led by physicist Robert Oppenheimer, culminated in the development of nuclear weapons, forever altering global warfare. The first bombs were used on Hiroshima and Nagasaki in 1945, ending World War II but with devastating consequences. Einstein's Regret: Although Einstein's equation 𝐸 = 𝑚 𝑐 2 E=mc 2 was foundational to nuclear physics, he later expressed deep regret for his indirect role in the bomb's creation. He called his involvement "the one great mistake in my life" and became an advocate for nuclear disarmament. Cultural Impact: The story of the Manhattan Project, highlighted in the recent film "Oppenheimer," continues to resonate, reminding us of the ethical dilemmas and lasting consequences of scientific advancements. As Einstein's historic letter goes up for auction at Christie's, it serves as a stark reminder of the power of scientific discovery and the importance of ethical considerations in its application. 🌍🔬 #ThesocialTalks #ScienceHistory #Einstein #ManhattanProject #AtomicBomb #NuclearWeapons #EthicsInScience

The Dodecahedron Linear String Field Hypothesis: A Path Towards Unified Field Theory and String Theory @SSRN https://lnkd.in/dxupBbuT The Dodecahedron Linear String Field Hypothesis (DLSFH) is a cutting-edge model in theoretical physics that aims to unify the four fundamental forces of nature—gravity, electromagnetism, weak nuclear force, and strong nuclear force—into a single framework. This ambitious goal is part of the broader quest for a Unified Field Theory (UFT), a theory that can explain all physical phenomena under one coherent model.

I’m super excited to share this: we landed a feature spot in the prestigious Science magazine! This article takes a deep dive into our approach, showing how we're not just dreaming about the future of fusion—we're building it right now. It features insights from our leadership and other industry experts who recognize that what we're doing is game-changing. That's because: -Our four-phase strategy isn't just ambitious - it's revolutionizing the path to fusion energy -Our fusion technology isn't just innovative - it's redefining what's possible in aerospace, space, defense, and isotope applications -We're not just in these markets - we're poised to completely disrupt them It's not every day that a company like ours gets this level of recognition from one of the world's most respected scientific journals. This feature is a testament to our groundbreaking work and the incredible teams making it happen!! https://lnkd.in/grC8CmJN

The Dodecahedron Linear String Field Hypothesis: A Path Towards Unified Field Theory and String Theory @SSRN The Dodecahedron Linear String Field Hypothesis (DLSFH) is a cutting-edge model in theoretical physics that aims to unify the four fundamental forces of nature—gravity, electromagnetism, weak nuclear force, and strong nuclear force—into a single framework. This ambitious goal is part of the broader quest for a Unified Field Theory (UFT), a theory that can explain all physical phenomena under one coherent model. https://lnkd.in/dxupBbuT

Scientists at Sandia National Labs are using the 'Z machine' to simulate the effects of nuclear blasts on asteroids. By creating super-heated plasma and X-rays, they analyzed the impact on silica samples. The findings offer insights into deflecting asteroids with nukes. More detailed simulations are needed for varied asteroid compositions. #Space #Asteroids #Nuclear https://lnkd.in/gRrBMsEt

The atomic bomb was developed by a team of scientists and engineers working on the Manhattan Project during World War II. The project was led by physicist J. Robert Oppenheimer, and included contributions from many other prominent scientists such as Enrico Fermi, Richard Feynman, and Niels Bohr. The development of the atomic bomb was a massive undertaking that involved thousands of people, and its creation was the result of decades of research in the fields of physics and chemistry. The first atomic bomb was successfully tested on July 16, 1945, in Alamogordo, New Mexico, and was later used by the United States to bring an end to the war with Japan. The scientists working on the project faced many challenges, including developing the technology to enrich uranium and to produce plutonium, as well as designing the complex detonation mechanisms needed for the bomb. The first successful test of the atomic bomb took place on July 16, 1945, in Alamogordo, New Mexico. The test, code-named "Trinity," was a success, and the bomb was found to have a destructive power far greater than anyone had imagined. The atomic bomb was later dropped on the Japanese cities of Hiroshima and Nagasaki in August 1945, killing an estimated 200,000 people. The bombings are controversial and remain a subject of debate to this day, with many arguing that the use of nuclear weapons was unnecessary and unethical. However, it is generally accepted that the development of the atomic bomb played a significant role in bringing an end to World War II and shaping the course of history in the 20th century. #eod #security #nuclear

CERN, the world-renowned particle physics laboratory, has decided to expel hundreds of Russian-affiliated scientists by the end of November 2024, in response to Russia’s 2022 invasion of Ukraine. This move brings an end to a long-standing collaboration with Russian institutions, reflecting broader geopolitical tensions impacting the scientific community. However, CERN will maintain its relationship with the Russian-based Joint Institute for Nuclear Research (JINR), meaning some Russian scientists will still participate in CERN projects, raising concerns over the potential military use of the research. While some applaud the decision to sever most ties with Russia, critics, particularly Ukrainian scientists, are worried about the ethical implications of continuing collaborations with JINR, which receives substantial funding from the Russian government. They fear that allowing Russian scientists access to advanced research could support military efforts during the ongoing conflict. As the November 30 deadline nears, the debate intensifies over whether scientific cooperation should take precedence over national security considerations. Full article below 👇🏼 #CERN #nuclear #russia #europe #science https://lnkd.in/en9hmDAG