16 results
tagged
physique x
-
Mesures: le grand renversement
'Du 13 au 16 novembre 2018 à Versailles, les unités de base du Système international seront toutes redéfinies en référence à sept constantes physiques dont la valeur exacte sera alors définitivement fixée. Retour sur les raisons et les enjeux d’une réforme attendue depuis trente ans et qui devrait entrer en vigueur en mai 2019.'2018-09-08 - permalink -- https://lejournal.cnrs.fr/articles/mesures-le-grand-renversement
-
Matière noire
3 articles récents sur la matière noire:2018-06-12 - permalink -
https://lejournal.cnrs.fr/articles/la-matiere-noire-court-toujours
https://lejournal.cnrs.fr/articles/un-univers-sans-matiere-noire-0
https://lejournal.cnrs.fr/articles/des-indices-dun-secteur-sombre-dans-lunivers- http://redbeard.free.fr/links/index.php?d2d4qw
-
String theory meets loop quantum gravity
'Two leading candidates for a theory of everything, long thought incompatible, may be two sides of the same coin.'2018-03-24 - permalink -
See also https://www.quantamagazine.org/why-the-dark-energy-problem-spawned-the-multiverse-hypothesis-20180312/- https://www.quantamagazine.org/string-theory-meets-loop-quantum-gravity-20160112
-
Stephen Hawking dies aged 76
See also https://www.theguardian.com/science/2018/mar/14/stephen-hawking-obituary2018-03-14 - permalink -
Et en français http://www.lemonde.fr/les-decodeurs/article/2018/03/14/ce-que-les-travaux-de-stephen-hawking-ont-apporte-a-la-physique_5271032_4355770.html- https://www.theguardian.com/science/2018/mar/14/stephen-hawking-professor-dies-aged-76
-
Physicists aim to classify all possible phases of matter
'A complete classification could lead to a wealth of new materials and technologies. But some exotic phases continue to resist understanding.'2018-01-20 - permalink -- https://www.quantamagazine.org/physicists-aim-to-classify-all-possible-phases-of-matter-20180103/
-
First support for a physics theory of life
'Take chemistry, add energy, get life. The first tests of Jeremy England’s provocative origin-of-life hypothesis are in, and they appear to show how order can arise from nothing.'2017-08-18 - permalink -- https://www.quantamagazine.org/first-support-for-a-physics-theory-of-life-20170726/
-
19 women leading math and physics
'Top women in mathematics and physics discuss how they got to where they are — and why there aren’t more of them'2017-04-02 - permalink -- https://www.quantamagazine.org/20170308-women-math-physics/
-
Les électrons sont-ils immortels?
La conclusion me semble fausse: comment, en un an d'observations, peut-on conclure quelque chose de raisonnable qui engage ce qui se passerait dans l'univers pour les 66 milliards de milliards de milliards d'années à venir? Il faudrait donc commencer par expliquer en détail le principe du raisonnement statistique employé par ces chercheurs.2015-12-22 - permalink -- http://passeurdesciences.blog.lemonde.fr/2015/12/20/les-electrons-sont-ils-immortels/
-
On the foundations of physics
'Tim Maudlin is the Tekken Revolution of the philosophy of physics. He is forever brooding on why there is no deep fissure between philosophy and science, the brilliance of Einstein and John Stewart Bell, about how to work out how the world is, about how to solve the liar paradox, on issues regarding metaphysics and physics, on time passing, on the way mathematics can mislead physicists, about relativity and why calling Einstein’s theory that is a bad idea, about why there is no quantum theory that can be interpreted, and why he finds the idea that nothing is fundamental possible but implausible. All so Huckleberry!'2015-11-23 - permalink -
See also https://ndpr.nd.edu/news/60670-new-foundations-for-physical-geometry-the-theory-of-linear-structures/- http://www.3ammagazine.com/3am/philosophy-of-physics/