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Physics
Results 1 - 20 of 139.
Astronomy / Space - Physics - 18.11.2024
H.E.S.S. collaboration detects the most energetic cosmic-ray electrons and positrons ever observed
Scientists from the CNRS, a consortium of German universities, and the Max-Planck-Institut für Kernphysik working at the H.E.S.S. observatory have recently identified electrons and positrons with the highest energies ever recorded on Earth. They provide evidence of cosmic processes emitting colossal amounts of energy, the origins of which are as yet unknown.
Physics - Earth Sciences - 18.10.2024
Infrasound: invisible sound waves
Infrasound are sound waves with frequencies below 20 Hz, outside the range audible to the human ear. Although they escape our auditory perception, these waves have significant effects on health, the environment and even animal biology. A great deal of research has explored the effects of infrasound, both natural and man-made, and has led to a better understanding of its implications.
Physics - 09.09.2024
Cell memory, a key parameter for morphogenesis
Publication of the RDP in PNAS on May 30, 2024. Communication by CNRS Physics on July 8, 2024. What principles govern the layout of living organisms? By combining physical models and experimental analysis, an international collaboration involving RDP scientists has identified a generic law linking the spatial organization of cells to their ability to faithfully transmit their specific characteristics during cell division.
Physics - Mathematics - 09.09.2024
The counter-intuitive statistics of thermodynamics on a microscopic scale
Publication of the Physics Laboratory in the Physical Review Letters on July 31, 2024. Communication by CNRS Physics on September 2, 2024. Experiments on a classical microscopic system show that, while the second principle of thermodynamics is still valid on average, it can be circumvented experimentally in 95% of cases! A study conducted at the Physics Laboratory of ENS de Lyon, published in Physical Review Letters .
Physics - 09.09.2024
So wait a while before cutting the cheese
Publication of the Physics Laboratory in the Physical Review Materials on July 9, 2024. Communication by CNRS Physics on September 5, 2024. Using an innovative measurement technique, researchers at the Physics Laboratory of ENS de Lyon (LPENSL, CNRS / ENS de Lyon) have succeeded in precisely tracking the steps characterizing the transformation of milk into cheese, which could deepen our understanding and help optimize the mechanisms at work in the manufacture of the many cheeses that happily garnish our plates.
Physics - Chemistry - 09.09.2024
Nuclear power plants: a scintillating sponge for monitoring radioactive gas emissions
Publication of the Chemistry Laboratory in Nature Photonics on September 2, 2024. CNRS press release on September 4, 2024. A scintillating aerogel enabling real-time measurements with excellent sensitivity to certain radioactive gases, essential to monitoring the proper functioning of nuclear power plants, has just been developed by a group of physicists, chemists, and metrologists from the CNRS, the University Claude Bernard Lyon 1, the CEA, and the ENS de Lyon.
Physics - 04.09.2024
Nuclear power plants: a scintillating sponge for monitoring radioactive gas emissions
A scintillating aerogel enabling real-time measurements with excellent sensitivity to certain radioactive gases, essential to monitoring the proper functioning of nuclear power plants, has just been developed by a group of physicists, chemists, and metrologists from the CNRS, the University Claude Bernard Lyon 1, the CEA, and the ENS de Lyon.
Physics - Innovation - 10.07.2024
X-Ray Diffraction: Introducing a new era in threat detection
In collaboration with Smiths Detection, CEA-Leti developed an innovative detection module for small-angle X-ray diffraction.
Astronomy / Space - Physics - 24.04.2024
Gaia BH3, the black hole that shouldn’t exist
The recent discovery of a binary system containing an extremely rare object, the most massive black hole (apart from SgrA*) ever detected in our Galaxy, calls into question the models for the formation of these bodies. Up until now, the Gaia space observatory has been used to observe the position and motion of stars, uncover the underlying structures of our Galaxy, and find new exoplanets.
Physics - 18.04.2024
Flow-induced structural reponses of attractive colloidal dispersions
Publication of the Physics Laboratory in the Journal of Rheology on April 11, 2024. In a recent study, a team of scientists led by researchers from the Physics Laboratory of ENS de Lyon (CNRS/ENS de Lyon) focused on the flow-induced responses of colloidal dispersions. Their work provides a better understanding of how colloids structure themselves under the effect of shear, an important step towards understanding this essential process in many industrial applications.
Chemistry - Physics - 20.12.2023
How is an ionic liquid structured when it comes into contact with a wall?
Publication of the Physics Laboratory and Chemistry Laboratory in the journal Langmuir on November 16, 2023. News by CNRS Chemistry on December 19, 2023. Water flowing over soluble rocks can create patterns of multiple troughs bordered by sharp ridges. By combining field measurements, a numerical model and laboratory experiments, a team led by the MSC laboratory (CNRS/Université Paris Cité), in collaboration with the LPG (CNRS/Nantes Université/Université d'Angers) and the RDP (CNRS/ENS de Lyon/Inrae) has shown that the appearance of these shapes results from a geometric mechanism.
Mathematics - Physics - 07.12.2023
CEA-Leti Paper in Nature Communications Reports First Complete Memristor-Based Bayesian Neural Network Implementation For Real-World Task
Breakthrough Classifies Types of Arrhythmia Recordings With Precise Aleatoric and Epistemic Uncertainty - A team comprising CEA-Leti, CEA-List and two CNRS laboratories has published a new paper in Nature Communications presenting the first complete memristor-based Bayesian neural network implementation for a real-world task-classifying types of arrhythmia recordings with precise aleatoric and epistemic uncertainty.
Astronomy / Space - Physics - 06.12.2023
Stellar winds regulate growth of galaxies
Galactic winds enable the exchange of matter between galaxies and their surroundings. In this way, they limit the growth of galaxies, that is, their star formation rate. Although this had already been observed in the local universe, an international research team led by a CNRS scientist 1 has just revealed-using MUSE, 2 an instrument integrated into the European Southern Observatory's (ESO) Very Large Telescope-the existence of the phenomenon in galaxies which are more than 7 billion years old and actively forming stars, the category to which most galaxies belong.
Chemistry - Physics - 28.11.2023
A new, more abundant catalyst to generate dihydrogen from water
Publication of the Chemistry Laboratory in the journal ACS Catalysis on November 9, 2023. Communication of CNRS Chemistry on November 27, 2023. Producing dihydrogen by electrolysis of water requires rare and therefore expensive catalysts. They could be replaced by another molybdenum-based catalyst, much more abundant but currently less efficient.
Astronomy / Space - Physics - 05.10.2023
Pulsar emits highest-energy radiation ever observed
Pulsars, small, very dense dead stars, emit electromagnetic radiation in the form of beams that sweep through space at regular intervals, rather like cosmic lighthouses. Now, recent observations of one of the nearest pulsars to Earth, the Vela pulsar, have caused a major stir in the scientific community: radiation around 200 times more energetic than any previously detected from this source has been detected at the H.E.S.S.
Physics - Computer Science - 21.09.2023
VeriQuB: a European project for ensuring the reliability of quantum systems
How can we guarantee the reliability of quantum systems? This is the challenge being addressed by an ambitious European research project called VeriQuB, coordinated by the QAT team (Inria, École normale supérieure - PSL, CNRS) at the Inria Paris centre. Its aim is to identify new methods for verifying the performance of quantum computers using bosons.
Life Sciences - Physics - 09.08.2023
Phase separation at the heart of the cell nucleus
Publication of the LBMC in the journal PNAS on August 7, 2023. Communication of CNRS-INSB on September 8, 2023. The organization of heterochromatin, the part of the genome containing repressed genes, into three-dimensional compartments is essential for the correct functioning of cells. But the mechanisms governing this organization are still not fully understood.
Physics - Life Sciences - 17.07.2023
How do you fit a bale of straw into the eye of a needle?
Publication of the Physics Laboratory in the journal PNAS, on July 18, 2022, and Nano Letters, on May 22, 2023. Communication of CNRS-INP on July 17, 2023. Researchers at the Physics laboratory of ENS de Lyon (CNRS/ENS de Lyon) have recreated artificial pores that mimic the functioning of two types of biological pore, paving the way for the manufacture of selective nano-pumps and nano-filters.
Astronomy / Space - Physics - 12.07.2023
Stellar winds regulate growth of galaxies
Publication of the CRAL in the journal Nature on December 6, 2023. Press alert of CNRS on December 6, 2023. Galactic winds enable the exchange of matter between galaxies and their surroundings. In this way, they limit the growth of galaxies, that is, their star formation rate.
Physics - 26.06.2023
Thermodynamics: 100% quantum
Publication of the Physics Laboratory and the LIP in the journal PRX Quantum on April 18, 2023. Communication of the CNRS-INP on June 13, 2023.