Ariel Levenson
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ariel-l.bsky.social
Ariel Levenson
@ariel-l.bsky.social
170 followers 260 following 21 posts
CNRS senior researcher. Nonlinear and quantum optics, nanophotonics. Omnivore and defender of diversity. Posts and likes are personal views.
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ariel-l.bsky.social
Avenir du Palais de la Découverte. Excellent billet de Xavier Mauduit dans les 28 minutes de ARTE
qui se termine par : "Science sans transmission n'est que ruine de la démocratie"
Signons la pétition !!!!
www.arte.tv/fr/videos/12...
Le palais de la découverte en sursis ? - 28 minutes (18/06/2025) - Regarder l’émission complète | ARTE
La réouverture du Palais de la Découverte, le musée des sciences à Paris, a été reportée par le gouvernement. Xavier Mauduit nous raconte les origines de ce lieu consacré à la démocratisation des conn...
www.arte.tv
June 20, 2025 at 2:18 PM
ariel-l.bsky.social
May 22, 2025 from 11:00 AM to 12:30 PM
An introduction to Neural algorithms.
The first of 3 Wabinaires on AI and Photonics organized by the French Optical Society, the GdRs Ondes and Complexe.
Free, pedagogical and without compromise !
www.sfoptique.org/pages/sfo/wa...
May 16, 2025 at 11:10 AM
Reposted by Ariel Levenson
davidho.bsky.social
I think a lot about what Carl Sagan said in one of his final interviews.
"WE'VE ARRANGED A society based on science and technology, in which nobody understands anything about science technology. And this combustible mixture of ignorance and power, sooner or later, is going to blow up in our faces. Who is running the science and technology in a democracy if the people don't know anything about it?" "Science is more than a body of knowledge, it's a way of thinking. A way of skeptically interrogating the universe with a fine understanding of human fallibility. If we are not able to ask skeptical questions, to interrogate those who tell us that something is true, to be skeptical of those in authority, then we're up for grabs for the next charlatan, political or religious, who comes ambling along."
May 4, 2025 at 6:21 AM
Reposted by Ariel Levenson
julien-bobroff.bsky.social
J'essaye en 2mn de vous expliquer pourquoi Trump agit contre la science et pourquoi ça ne se limite pas aux USA.

Le mouvement américain : standupforscience.org
et chez les français : standupforscience.fr

#standupforscience #standupforsciencefrance

youtube.com/shorts/HYEh8...
Trump contre la science (vidéo n°436)
YouTube video by Julien Bobroff
youtube.com
March 7, 2025 at 7:16 AM
ariel-l.bsky.social
Standup for science!
March 7, 2025 at 1:16 PM
Reposted by Ariel Levenson
rancillac.bsky.social
Stand up for Science!
Partout dans le monde et à Paris.
Nous comptons sur vous le 7 mars !
9h30 – Conférence de presse ouverte au public au Collège de France
11h30 – Tables rondes et exposés ouverts au public à Jussieu (amphithéâtre 45B)
13h30 – Marche #StandUpForScience
👉 standupforscience.fr
March 5, 2025 at 8:27 AM
ariel-l.bsky.social
Almost Bluesky!
February 27, 2025 at 6:50 PM
ariel-l.bsky.social
👉 Deadline 31 mars candidatures Prix Jean Jerphagnon.
qui récompense un/e candidat/e portant un projet photonique de grande qualité scientifique et au potentiel industriel
3 derniers lauréats: Julien Laurat, Niccolo Somaschi, Kate Grieve
SOCIETE FRANCAISE D'OPTIQUE
www.sfoptique.org/pages/la-sfo...
February 17, 2025 at 1:36 PM
Reposted by Ariel Levenson
chercheurjuteux.com
« On a bien besoin de Wikipédia pour résister à des gens comme Musk » : entretien avec le Nobel agenais Alain Aspect, qui sort un livre sur la physique quantique

Plus le temps passe, plus j'apprécie Aspect pour ses prises de position en plus du travail scientifique.

www.sudouest.fr/sciences-et-...
« On a bien besoin de Wikipédia pour résister à des gens comme Musk » : entretien avec le Nobel agenais Alain Aspect, qui sort un livre sur la physique quantique
Le Lot-et-Garonnais publie « Si Einstein avait su », revenant sur un fameux débat au cœur de la physique quantique. Un ouvrage qu’il destine autant aux profanes qu’aux plus aguerris. L’auteur sera ce ...
www.sudouest.fr
February 6, 2025 at 7:49 AM
ariel-l.bsky.social
International year of Quantum Science and Technology is open!
February 4, 2025 at 9:12 AM
ariel-l.bsky.social
great time around a beer! on the harmonica Rachel Plas 👏
January 26, 2025 at 6:57 PM
ariel-l.bsky.social
23 et 24 janvier : Journées 40 ans des boîtes quantiques - Hommage à Jean-Yves Marzin Inscriptions gratuites mais obligatoires. Attention l'amphi sera bientôt complet ! 👉 quantumdots.sciencesconf.org/resource/pag...
January 11, 2025 at 9:24 AM
Reposted by Ariel Levenson
johnmdudley.bsky.social
A warm and wonderful recognition of Wilson Sibbett written by friend and colleague Roy Taylor in the latest issue of Nature Photonics. I am unsure about access options so (lower resolution) screenshots are below. www.nature.com/articles/s41...
Obituary of Wilson Sibbett - Page 1 Obituary of Wilson Sibbett - Page 2
January 8, 2025 at 9:53 AM
Reposted by Ariel Levenson
julien-bobroff.bsky.social
Démarrons l'année avec une question étrange à la réponse encore plus étrange : quel âge a la lumière ??? Bonne année à toutes et à tous.
youtube.com/shorts/pAXvO...
Quel âge a la lumière ? (vidéo n°415)
YouTube video by Julien Bobroff
youtube.com
January 1, 2025 at 2:37 PM
Reposted by Ariel Levenson
vergaralautaro.bsky.social
HISTORY OF PHYSICS

Chandrasekhara Venkata Raman and his love for music.

Although he didn't study them exhaustively, Raman discovered that the rich tonal quality of the tambura and veena (shown below) was due to the peculiarity of the bridge.

1/
December 27, 2024 at 3:01 PM
ariel-l.bsky.social
This “Christmas tree” with the design incorporating Fresnel optics, was in operation at the Vilan Cap Lighthouse in Galicia from 1896 to 1964! the light reached 64 km.
I wish you a wonderful holiday season with your family.
December 26, 2024 at 7:18 AM
ariel-l.bsky.social
Without words… but very comforting in these complicated times!
December 22, 2024 at 2:57 PM
Reposted by Ariel Levenson
mcnees.bsky.social
Mathematical physicist Cécile DeWitt-Morette was born #OTD in 1922. She made foundational contributions to Feynman functional integrals, organized the first American conference on general relativity (important for gravitational waves), and started the Les Houches Summer School. 🧪 ⚛️ 👩‍🔬 (1/n)
Black and white photo of Cécile in the 1940s or 50s. She is smiling and looking to the right of the camera. Her hair is short and she is wearing a collared blouse. A black and white photo of Cécile take in her office at UT Austin in the early or mid 2000s. A blackboard with diagrams and a well-known file cabinet sit in the background. Cécile’s hair is short and she wears a floral print shirt.
December 21, 2024 at 5:38 PM
ariel-l.bsky.social
Opportune positioning of 6 major European research players, for ambitious support for fundamental research, for the simplification of administrative procedures, etc. all that is missing is the word photonics to have an excellent holiday!

www.calameo.com/books/007842...
G6 Position Paper On FP10
G6 STATEMENT ON THE FUTURE OF EUROPEAN RESEARCH AND INNOVATION The G6 of science, comprising six major European research organizations, recognise the need for a strategic reorientation and stronger pr...
www.calameo.com
December 21, 2024 at 11:27 AM
ariel-l.bsky.social
Knock ! Knock ! My first post
"The choice of problems is the primary determinant of what one accomplishes in science" John J. Hopfield Nobel Prize lecture...
December 18, 2024 at 1:00 PM