It was a nice CLEO Europe
#cleoeurope
Thanks @jiaqijqli.bsky.social and Andrei Ermolaev for the pictures
27.06.2025 15:35
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It was a nice CLEO Europe
#cleoeurope
Thanks @jiaqijqli.bsky.social and Andrei Ermolaev for the pictures
It was a real delight to work with @optica-opn.org on a photo essay describing our university's historical optics instruments collection. The article (for Optica members) is here www.optica-opn.org/home/article... but the photos are public on Flickr here: www.flickr.com/photos/13104...
Preparing my 2025 Day of Light outreach lectures, I bought a glass sphere and made a rainbow. But I saw some odd things, and so here’s a thread with some photos and raytracing pictures. There may well be mistakes so tell me and I'll fix them. First the basic setup showing the primary bow.
The clouds were beautiful yesterday
This Hubble image captures Arp 321, a compact group of interacting galaxies. The galaxies display distorted structures and bright star formation regions, evidence of their gravitational dance. The dominant galaxies show prominent spiral arms and bright cores.
Arp 321.
a compact group of five galaxies located in the constellation Hydra. It's a fascinating object for astronomers because these galaxies are in close proximity and interacting with each other.
Processed Hubble data by Dr. Mehmet Hakan Özsaraç.
www.flickr.com/photos/mhozs...
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2025 vient d'être déclarée année de la quantique par l'ONU ! L’occasion rêvée de découvrir les ressources gratuites qu'on a conçues. Si vous aimez, partagez largement. Après tout, ce n'est pas tous les jours qu'on inaugure une année quantique ! vulgarisation.fr/projet/annee...
Talking about AI for quantum science at the International Year of Quantum Science and Technology #IYQ2025
International Year of Artificial Intelligence 2035? 🤔 #AI
C'est beau une comète, et cette photo prise en 2001 particulièrement !
Wavy clouds
Yeah, I understand. At some point, it starts to get complicated being stuck in an "eternal" postdoc position and not finding any permanent in the uni. Unfortunatly, if I don't find a permanent position in 5 or 6 years, I may end up working in industry even if I want to avoid that choice
Nordhavn og Kongens Lyngby
#PhysicsFactlet
If you put apertures of different shapes in the path of a plane wave, you get different diffraction patterns. And with a bit of experience you can say a lot about the aperture shape just by looking at the diffraction pattern.
#Physics #Optics #Photonics #ITeachPhysics
Le télescope spatial Hubble vient de finir une carte hallucinante de la galaxie d'Andromède: 2,5 milliards de pixels, on y voit 200 millions d'étoiles, la galaxie en compte des centaines de milliards!
Vous pouvez vous y balader ici: www.esa.int/Science_Expl...
Bon voyage!
Et devoir avancer les frais de déplacement (hotel, conference fees etc.), permanent ou pas, ça devrait cesser aussi
Ils sont trop mims les loups à crinière avec leurs pattounes longilignes
And obviously 😊
The picture used for the login screen today 👌
A figure extract showing evolution plots for supercontinuum generation and the results of a dominant balance analysis allowing the automated identification of different regimes of dominant physics/ Taken from https://www.optica-opn.org/home/articles/volume_35/december_2024/extras/automating_physical_intuition_in_nonlinear_optics/
Delighted to announce that Andrei Ermolaev's PhD work was selected for Optics in 2024 by @opnmagazine.bsky.social The idea is to algorithmically analyse the term by term contributions that make a PDE sum to zero so as to determine the dominant physics. Simple! www.optica-opn.org/home/article... 🧪💡
Schéma expliquant la méthode pour étudier l'ionosphère en temps réel avec des téléphones portables. Les signaux satellites peuvent être utilisés pour cartographier le contenu en électrons de l’ionosphère. C'est possible parce que les ondes radio sont ralenties par ces électrons, et la durée du retard est directement proportionnelle au nombre total d’électrons entre le récepteur et le satellite. En transmettant des signaux à deux fréquences ou plus, le nombre total d’électrons ionosphériques le long du trajet d’un signal peut être calculé.
Des chercheurs de Google ont utilisé des données provenant de 40 millions de téléphones portables pour cartographier en temps réel les conditions qui règnent dans l’ionosphère.
Objectif: améliorer la navigation par satellite et aider l'étude de l’ionosphère.🧪
Source www.nature.com/articles/d41...
A nice place for skiing and hiking ^^
Another banana when this one will be rotten 😁
En vieillissant elle devient de plus en plus... pot de colle
Je vais bientôt pouvoir la surnommer seccotine
I have to trust you, I wasn't born or even a project 🙃🙃
Ouki so
"Throw a flip-flop on people who bothered me as suggested John"
Indeed, focus on faces
Does this suggestion include everyone in lab ?
Nice safety flip-flop lab 😅
The first computer I remember we had at home was something like this one, but on Windows 95. Bought by my mom, of course. She wrote her thesis on it when I was 3ish years old
La beauté de Saturne vue à travers ses anneaux !
This image was created from a composite of several images from Webb. Visible auroras extend to high altitudes above both the northern and southern poles of Jupiter. The auroras shine in a filter that is mapped to redder colors, which also highlights light reflected from lower clouds and upper hazes. A different filter, mapped to yellows and greens, shows hazes swirling around the northern and southern poles. A third filter, mapped to blues, showcases light that is reflected from a deeper main cloud. The Great Red Spot, a famous storm so big it could swallow Earth, appears white in these views, as do other clouds, because they are reflecting a lot of sunlight.
Infrared image of Jupiter by JWST.
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