ORIGINS Cluster’s Post

On this in science The discovery of cosmic rays was announced on this day in 1925 In 1911 and 1912 Austrian physicist Victor Hess made a series of ascents in a balloon to take measurements of radiation in the atmosphere. He was looking for the source of an ionizing radiation that registered on an electroscope – the prevailing theory was that the radiation came from the rocks of the Earth. To test the theory, in 1909 German scientist Theodor Wulf measured the rate of ionization near the top of the Eiffel tower (at a height of about 300 metres) using a portable electroscope. Though he expected the ionization rate to decrease with height, Wulf noted that the ionization rate at the top was just under half that at ground level – a much less significant decrease than anticipated. Victor Hess's balloon flights took such measurements further. In 1911 his balloon reached an altitude of around 1100 metres, but Hess found "no essential change" in the amount of radiation compared with ground level. Then, on 17 April 1912, Hess made an ascent to 5300 metres during a near-total eclipse of the Sun. Since ionization of the atmosphere did not decrease during the eclipse, he reasoned that the source of the radiation could not be the Sun – it had to be coming from further out in space. High in the atmosphere, Hess had discovered a natural source of high-energy particles: cosmic rays. Hess's findings were confirmed in 1925 by Robert Millikan, who dubbed the mysterious radiation “cosmic rays.” Hess shared the 1936 Nobel prize in physics for his discovery, and cosmic rays have proved useful in physics experiments – including several at CERN #science #scienceandtechnology #sciencecommunication #physics #cosmicenergy #chemistry #research #inovation #stem #stemeducation

Finally its published" Futuristic Trends in Physical Sciences Volume 3 Book1 Physical Sciences book series aims to bring together leading academic scientists, researchers and research scholars to exchange and share their experiences and research results on all aspects of Physical Sciences. The field of advanced physical sciences has not only helped the development in various fields in Science and Technology but also contributes the improvement of the quality of human life to a great extent. The focus of the book would be on state-of-the-art technologies and advances in Physical Sciences. It also focuses on a range of issues but not limited to Astrophysics ,Atmospheric and Space Physics,Atomic & MolecularPhysics,Biophysics,Condensed Matter & Materials Physics,General & Interdisciplinary Physics,Quantum Science & Technology,Nonlinear Dynamics & Complex Systems,Nuclear Physics,Optics and Spectroscopy ,Particle Physics,Plasma Physics,Relativity & Cosmology, Statistical Physics Futuristic Trends in Physical Sciences e-ISBN: 978-93-5747-862-5 IIP Series, Volume 3, Book 1

🌌 Exploring the Interplay of Physics and Existence 🌌 Advances in Theoretical & Computational Physics (ATCP) is proud to announce the publication of an intriguing article by Hans J. Fahr, titled: "Is the Evolution of Mankind and the Universe Solely a Physical Selfrunner?" 📜 Citation: Fahr, H. J. (2024). Is the Evolution of Mankind and the Universe Solely a Physical Selfrunner? Adv Theo Comp Phy, 7(4), 01-08. 🔍 Key Highlights: This groundbreaking work delves into the intricate relationship between the physical laws of the universe and the evolution of human existence. Are we merely driven by natural self-running mechanisms, or is there more to the equation? Discover how this study sheds new light on humanity’s place in the cosmos and stimulates thought-provoking discussions. 🌟 Read the full article and join the conversation about the profound questions shaping physics and philosophy. 📩 We invite researchers worldwide to contribute to our upcoming issues. Share your insights and push the boundaries of knowledge! #Physics #TheoreticalPhysics #HumanEvolution #Cosmology #ScientificResearch

Scientists explore the optical signatures of molecules at relativistic speeds 🚀   In their recent research, a team of scientists addressed the challenging question: How does the motion of essential biomolecules such as B-DNA and chlorophyll at relativistic speeds affect their optical properties?   By combining quantum chemistry with optical simulations, the team studied the transmission circular dichroism (TCD) of these chiral molecules as they move at high speeds. Their results show that the optical signatures shift to shorter wavelengths as the speed increases.   This research is part of a growing effort to detect chiral molecules in space, which could aid in the search for extraterrestrial life. Building on previous discoveries of interstellar chiral molecules such as propylene oxide, the team offers new insights into how biomolecules behave when traveling at a significant fraction of the speed of light.   In particular, Cluster Postdoctoral Researchers Marjan Krstić and Ivan Fernandez Corbaton, and PI Carsten Rockstuhl were part of the research team and contributed to this groundbreaking study, which has implications for both fundamental science and future space exploration. 🌌✨   🔗 https://lnkd.in/eKasxEfe #Astrobiology #QuantumChemistry #RelativisticPhysics #CircularDichroism #ExtraterrestrialLife #ChiralMolecules #paper

📃Scientific paper: Universal Acceleration and Fuzzy Dark Matter Abstract: Observations of velocity dispersions of galactic structures over a wide range of scales point to the existence of a universal acceleration scale $a\_0\sim 10^\{-10\}$ m/s$^2$. Focusing on the fuzzy dark matter paradigm, which proposes ultralight dark matter with mass around $10^\{-22\}$ eV and de Broglie wavelength $\lambda\sim \{\rm few\}\times10^\{2\}$ parsecs, we highlight the emergence of the observed acceleration scale from quantum effects in a fluid-like description of the dark matter dynamics. We then suggest the possibility of a natural connection between the acceleration scale and dark energy within the same paradigm. ;Comment: This paper has been awarded 3rd Prize in the Gravity Research Foundation 2024 Awards for Essays on Gravitation, and is to be published in a special issue of the International Journal of Modern Physics D \(IJMPD\) Continued on ES/IODE ➡️ https://etcse.fr/p7CX ------- If you find this interesting, feel free to follow, comment and share. We need your help to enhance our visibility, so that our platform continues to serve you.

#Space | 𝗨𝗻𝗿𝗮𝘃𝗲𝗹𝗶𝗻𝗴 𝘁𝗵𝗲 𝗙𝗼𝗿𝗺𝗮𝘁𝗶𝗼𝗻 𝗼𝗳 𝗢𝗿𝗴𝗮𝗻𝗶𝗰 𝗠𝗮𝗰𝗿𝗼𝗺𝗼𝗹𝗲𝗰𝘂𝗹𝗲𝘀 𝗶𝗻 𝗦𝗽𝗮𝗰𝗲 | Dr. Niels Ligterink from Delft University of Technology, formerly at the Physics Institute of the University of Bern, has led a groundbreaking study published in Nature Astronomy. This research provides valuable insights into the formation of organic macromolecules, crucial components thought to play a role in the building blocks of planets. Utilizing an observation-based model, Dr. Ligterink and his team have elucidated the processes by which these large molecules form, offering a clearer understanding of their presence in chondrites. This is a significant stride in the field of space exploration and organic chemistry. 👉 Learn more >> https://lnkd.in/gF8vNZcc 👉 Original publication >> https://lnkd.in/d2ygeSKe Photo: CERN 🇨🇭 Follow #ScienceSwitzerland for the latest news and emerging trends on Swiss science, technology, education, and innovation >> swissinnovation.org Follow us >> Science-Switzerland #Science | #Education | #Research | #Innovation

Friday 5th April Simon Vendelbo Bylling Jensen will be defending his PhD thesis 'Laser-driven electrons in motion – an investigation of their ultrafast nature’.    Electrons are vital for our world. They emit the light we see, hold molecules together, and power innovative technologies. The movements of electrons occur on few attoseconds, a timescale of so brief, that there are more attoseconds within each second than there have been seconds since the beginning of the universe. With modern laser technologies one can observe and influence the movements of electrons on their natural ultrafast timescale. During his PhD studies, Simon Vendelbo Bylling Jensen researched the fundamental mechanisms which govern the ultrafast motion of laser-driven electrons.    Time: Friday 5th April 2024 at 13:15 Place: Aarhus University, Department of Physics and Astronomy, Ny Munkegade 120, 8000 Aarhus C, 1525-626   Members of the assessment committee: Professor Dieter Bauer, Institute of Physics, University of Rostock, Germany La Caixa Junior Leader Rui Emanuel Ferreira da Silva, The Material Science Institute of Madrid, Spain Associate Professor Jill Miwa (chair) Department of Physics and Astronomy, Aarhus University, Denmark   Main supervisor: Professor Lars Bojer Madsen, Department of Physics and Astronomy, Aarhus University, Denmark   The defence is public and will be conducted in English    #dkforsk #science #dkvid #AU #phddefence 

Research Collaboration Opportunity in Theoretical Physics. I am looking for collaborators to delve into a compelling idea in gravitational physics that challenges traditional views of the equivalence principle. The author ongoing research suggests that gravitational acceleration may not be fundamentally equivalent to physical acceleration. If this hypothesis is confirmed, it could significantly alter our comprehension of gravity. The paper titled "The Equivalence Principle is Wrong: Gravity is Not Fundamentally the Same as Acceleration," authored by John A. Macken, introduces a novel framework for examining gravitational phenomena, utilizing concepts such as the "rate of time gradient" and the variations in gravity across different planetary bodies, including Earth and Neptune. This is an open call to theoretical physicists, researchers, and students who are keen on gravitational theory, general relativity, and alternative models to collaborate, exchange ideas, and advance this inquiry. Professors are encouraged to share this opportunity with interested students. If you are enthusiastic about challenging foundational principles and exploring innovative views on gravity, I would be eager to connect and discuss potential collaboration. Let’s expand the horizons of physics and investigate possibilities beyond the equivalence principle. Please feel free to reach out directly or comment below to join this exploration. Feel free to contact Author: [email protected] #TheoreticalPhysics #Gravity #EquivalencePrinciple #GeneralRelativity #PhysicsResearch #Collaboration #ScientificDiscovery #Astrophysics #QuantumGravity #ResearchOpportunity #PhysicsCommunity #GradStudents #AcademicResearch #InnovativeScience #LinkedInScience

Decay of False Vacuum in Ferromagnetic Superfluid: A New Frontier in Quantum Physics Recent research by Italian physicists from the University of Trento, published in the prestigious journal Nature Physics, offers an exciting insight into the phenomenon of false vacuum decay in ferromagnetic superfluids. This discovery not only confirms theoretical calculations but also opens up new avenues for understanding the fundamentals of quantum physics. Under the scrutiny of physicists was a supercooled gas consisting of atoms of sodium-23 isotope (23Na), trapped in an optical trap and cooled to extremely low temperatures. This gas transitions into a Bose-Einstein condensate state, allowing researchers to delve into its inner quantum properties. A pivotal moment in the study is the observation of the process of forming true vacuum bubbles within the ferromagnetic superfluid. Physicists found that this process occurs due to quantum vacuum fluctuations, confirming scenarios presented in field theory. Comparison of experimental data with numerical models and classical field dynamics provides compelling evidence for the observed phenomenon. This opens up new horizons for a deeper understanding of processes occurring in quantum systems. One of the most intriguing implications of this research is the possibility of more detailed study of false vacuum decay in quantum states. It is anticipated that this method could lead to new discoveries in understanding fundamental aspects of quantum physics and its applications in various fields, from cosmology to nanotechnology. And, of course, it is worth contemplating that our own Universe's vacuum may also be false. This raises a wide range of philosophical and scientific questions about the nature of our reality and its potential changes. Perhaps in the future, further research in this area will pave the way for new discoveries and understanding the essence of our world. Link: https://lnkd.in/dHgBq9Zr #QuantumPhysics #FalseVacuum #Superfluidity #BoseEinsteinCondensate #PhysicsResearch #NaturePhysics

[Master Thesis] [Atom Interferometer Observatory and Network] [Gravitational Waves] [Imperial College London] This summer, I am working on the AION project (Atom Interferometer Observatory and Network) which is part of the High Energy Physics department in Imperial College. AION aims to explore the nature of dark matter and provide a pathway towards detecting gravitational waves from the very early Universe and astrophysical sources in the mid-frequency band ranging from several mHz to a few Hz.  My master thesis is about sideband modulation of spectroscopy light with a waveguide EOM to characterise velocity profiles of atomic strontium beams which are used as the atoms sources for the experiments. Accurately characterising the velocity profiles of the sources will improve the quality of the Zeeman slowing and of the overall MOT processes. More information on the AION project can be found here: https://lnkd.in/eu7RJZ8Z