@outer@mas.to2025-12-27 16:26:45
This basic science advance was made with a rocket sled. (And math.) But rocket sleds are FUN!
#Science #PlanetaryScience #RocketSled
@netzschleuder@social.skewed.de2025-09-27 08:00:04
sp_high_school_new: High school dynamic contacts (2011-2012)
These datasets contain the temporal network of contacts between students in a high school in Marseilles, France. The first dataset gives the contacts of the students of three classes during 4 days in Dec. 2011, and the second corresponds to the contacts of the students of 5 classes during 7 days (from a Monday to the Tuesday of the following week) in Nov. 2012.
This network has 180 nodes and 45047 edges.
Tags: Soc…
@pre@boing.world2025-12-26 08:40:32
Nice to see a UK party leader demonstrate some actual compassion and care this Christmas. I'm so fed up with politicians pedaling hate and division trying to pander to terrible racism and xenophobia, trying to pick up the votes of the hateful.
This is what political leadership really is. Not following the right wing media hatred but countering it.
Zack Polanski's Christmas message is less than five minutes.
#green #christmas
@kctipton@mas.to2025-12-24 03:02:10
Oklahoma instructor removed from teaching for failing a screed of an essay
https://apnews.com/article/oklahoma-bible-essay-instructor-fulneckydei-f37ba4b8afdc9d9aba3b73b124f13b9b
@netzschleuder@social.skewed.de2025-10-27 15:00:03
sp_high_school_new: High school dynamic contacts (2011-2012)
These datasets contain the temporal network of contacts between students in a high school in Marseilles, France. The first dataset gives the contacts of the students of three classes during 4 days in Dec. 2011, and the second corresponds to the contacts of the students of 5 classes during 7 days (from a Monday to the Tuesday of the following week) in Nov. 2012.
This network has 180 nodes and 45047 edges.
Tags: Soc…
@netzschleuder@social.skewed.de2025-11-26 14:00:04
sp_high_school_new: High school dynamic contacts (2011-2012)
These datasets contain the temporal network of contacts between students in a high school in Marseilles, France. The first dataset gives the contacts of the students of three classes during 4 days in Dec. 2011, and the second corresponds to the contacts of the students of 5 classes during 7 days (from a Monday to the Tuesday of the following week) in Nov. 2012.
This network has 126 nodes and 28561 edges.
Tags: Soc…
@jackie@social.linux.pizza2025-11-25 00:17:35
the "woke games detector"'s ULTRAKILL problem: there are some games they don't like just because the developer is vaguely progressive and the fandom is largely queer and makes a lot gay fanart of the characters but they have to come up with some 4d chess problem with the game itself
like ah yes the game about robot killing demons in hell and extracting their blood is woke because there's a blahaj easter egg and not because there's shitload of V1 x Gabriel yao…
@leftsidestory@mstdn.social2025-12-10 00:30:00
Urbanity - Cloud Four ☁️
城市化 - 四云 ☁️
📷 Pentax MX
🎞️ Ilford Pan 100
#filmphotography #Photography #blackandwhite
@arXiv_physicsoptics_bot@mastoxiv.page2025-11-25 09:19:33
Graphene and thin graphite films for ultrafast optical Kerr gating at 1 GHz repetition rate under focused illumination
Amr Farrag, Assegid M. Flatae, Mario Agio
https://arxiv.org/abs/2511.17713 https://arxiv.org/pdf/2511.17713 https://arxiv.org/html/2511.17713
arXiv:2511.17713v1 Announce Type: new
Abstract: The ability to address sub-picosecond events of weak optical signals is essential for progress in quantum science, nonlinear optics, and ultrafast spectroscopy. While up-conversion and optical Kerr gating (OKG) offer femtosecond resolution, they are generally limited to ensemble measurements, making ultrafast detection in nano-optics challenging. OKG, with its broadband response and high throughput without phase-matching, is especially promising when used at high repetition rates under focused illumination.
Here, we demonstrate an ultrafast detection scheme using the third-order nonlinearity of graphene and thin graphite films, operating at 1 GHz with sub-nanojoule pulses and achieving 141 fs temporal resolution. Their exceptionally large nonlinear refractive index, orders of magnitude higher than conventional Kerr media, enhances detection efficiency at smaller thicknesses, enables sub-picosecond response, and supports broadband operation. Their atomic-scale thickness minimizes dispersion and simplifies integration with microscopy platforms, optical fibers, and nanophotonic circuits, making them a compact, practical material platform for nano-optical and on-chip ultrafast Kerr gating.
toXiv_bot_toot
@dhuyvetter@mastodon.social2025-10-01 14:45:11
The US Mainstream Media Is Catastrophically Failing To Meet The Moment
Techdirt wrote about Trump’s extraordinary admission that he was basing military deployment decisions on old Fox News footage and lies from his advisors. But there’s an even more damning story here: how that revelation almost never saw the light of day because of journalistic cowardice.
