Sign in

gravity-levity.bsky.social

@gravity-levity.bsky.social
273 followers 100 following 167 posts
PostsRepliesMedia
gravity-levity.bsky.social @gravity-levity.bsky.social · 20/05/2026
This might be the most impressive thing I've ever seen a robot do. Just a flawless slapstick routine
120
Reposted by @gravity-levity.bsky.social
Nature @nature.com · 18/05/2026
The backlash against artificial intelligence is growing. What do you think about its impact on science? go.nature.com/4tJWk6t
go.nature.com
Do you hate or love AI? Take Nature's poll
The backlash against artificial intelligence is growing. Nature wants to know what its readers think about the impact on science.
73814
gravity-levity.bsky.social @gravity-levity.bsky.social · 11/05/2026
Penn State is hosting a summer school this July on "Quantum Simulation of Strongly Correlated Quantum Matter". Consider applying if you want to hear me give lectures about strongly correlated matter while ignoring the "quantum simulation" part. sites.psu.edu/cteq/cteqss2...
sites.psu.edu
CTEQ SUMMER SCHOOL 2026 | CTEQ
020
gravity-levity.bsky.social @gravity-levity.bsky.social · 17/12/2025
can anyone beat my high score on Spotify?
140
gravity-levity.bsky.social @gravity-levity.bsky.social · 17/12/2025
I admit I'm a bit outnerded by this one. "log-normalized aspect ratio" means log(aspect ratio of this thing) / log(aspect ratio of the thing defined to have LAR = 1) ? What is "assume spherical everything" doing?
000
gravity-levity.bsky.social @gravity-levity.bsky.social · 04/12/2025
McCarthy never would have used that comma though
000
gravity-levity.bsky.social @gravity-levity.bsky.social · 30/11/2025
Taking long walks around Baltimore and admiring all the elaborate and unusual fire escapes on the sides of old buildings
140
Reposted by @gravity-levity.bsky.social
Mike McMahan @mikemcmahan.bsky.social · 18/11/2025
MAGRERR CHRISMACKS
Sexy snowman
1529785
gravity-levity.bsky.social @gravity-levity.bsky.social · 09/11/2025
you're right, most of us never get famous
010
gravity-levity.bsky.social @gravity-levity.bsky.social · 09/11/2025
(I made this dumb joke on twitter a few years ago: x.com/gravity_levi... )
x.com
Brian Skinner on X: "Life cycle of a physicist: https://t.co/M3m4oHXX5z" / X
Life cycle of a physicist: https://t.co/M3m4oHXX5z
000
gravity-levity.bsky.social @gravity-levity.bsky.social · 09/11/2025
Life cycle of a physicist:
260
Reposted by @gravity-levity.bsky.social
Graham Annable @grickle.bsky.social · 29/10/2025
Chops. #grickledoodle #vampire #music #halloween #horror #cartoon #art #drawing #funny
A cartoon illustration of a vampire at an organ talking to another vampire. Caption reads "I really only know 'chopsticks' I'm embarrassed to say. But it's a very spooky 'chopsticks' in my opinion."
022850
gravity-levity.bsky.social @gravity-levity.bsky.social · 25/10/2025
This animation alone should win a science journalism award
010
gravity-levity.bsky.social @gravity-levity.bsky.social · 18/10/2025
my local library is pushing pro-AI propaganda at children smh
010
Reposted by @gravity-levity.bsky.social
Dulwich Quantum Computing @dulwichquantum.bsky.social · 07/10/2025
Live footage of Nobel committee giving the Physics prize to quantum computing.
1516
gravity-levity.bsky.social @gravity-levity.bsky.social · 06/10/2025
It's because we're all sick of Trump and immediately scroll away whenever his face appears
030
gravity-levity.bsky.social @gravity-levity.bsky.social · 04/10/2025
Measurement is a classical process by definition (even in quantum mechanics), so I can only conclude that a "quantum measurement" is a normal measurement that has gone through a marketing transformation
121
gravity-levity.bsky.social @gravity-levity.bsky.social · 29/09/2025
They'll sing a different tune when I've published my brilliant and deeply moving debut novel: Bill Dung's Roman Adventure
000
gravity-levity.bsky.social @gravity-levity.bsky.social · 29/09/2025
It was like getting a preview of what the adult mind must be like, and I wasn't sure I liked it but I couldn't look away.
030
gravity-levity.bsky.social @gravity-levity.bsky.social · 29/09/2025
My parents had a bunch of these collections, and as a kid in the early 90s I read them with a kind of perverse fascination. There were clearly points of appeal to kids, but the focus was squarely on "adult themes" (risque, political, banal).
120
Reposted by @gravity-levity.bsky.social
Dulwich Quantum Computing @dulwichquantum.bsky.social · 27/09/2025
Promo video for the recent HSBC and IBM Quantum breakthrough in finance, if it was directed by Scott Aaronson. scottaaronson.blog?p=9170
1369
Reposted by @gravity-levity.bsky.social
McSweeney's @mcsweeneys.net · 24/09/2025
"Just as Jay Gatsby is an enigmatic larger-than-life figure driven to accumulate wealth at all costs in a futile bid for the love of Daisy Buchanan, the Xerox 914 beats on ceaselessly, printing page after page, for reasons that readers cannot fully comprehend."
buff.ly
Book Review: The Great Gatsby by the Xerox 914 Photocopier
Amid the rise of artificial intelligence, technophobes and Luddites have continued to insist that machines “can’t really write”—at least not the wa...
0508
gravity-levity.bsky.social @gravity-levity.bsky.social · 17/09/2025
South Carolina
010
gravity-levity.bsky.social @gravity-levity.bsky.social · 11/09/2025
that was true before this tweet
030
gravity-levity.bsky.social @gravity-levity.bsky.social · 09/09/2025
I've been doing some percolation calculations lately, and I decided that I was tired of letting my computer have all the fun
190
Reposted by @gravity-levity.bsky.social
World Conferences on Research Integrity @wcrifoundation.bsky.social · 08/09/2025
Cognitive scientists and AI researchers make a forceful call to reject “uncritical adoption" of AI in academia #AI #GenAI #HigherEducation #ResearchIntegrity #WCRI2026 #WCRI www.bloodinthemachine.com/p/cognitive-...
bloodinthemachine.com
Cognitive scientists and AI researchers make a forceful call to reject “uncritical adoption" of AI in academia
A new paper calls on academia to repel rampant AI in university departments and classrooms.
086
gravity-levity.bsky.social @gravity-levity.bsky.social · 08/09/2025
Good correction, which shows that I misremembered / omitted some context in my summary. Weiss came up with the idea of an optical interferometric gravitational wave detector, which eventually became LIGO. Much better to read his summary of what happened than mine: www.kavliprize.org/rainer-weiss...
kavliprize.org
Rainer Weiss life story
Rainer Weiss life story
110
gravity-levity.bsky.social @gravity-levity.bsky.social · 08/09/2025
As someone who is never able to maintain focus on a single problem for more than a year or so, I'm so glad there are people like this in science. (And of course I worry that the modern culture and pace of science is pushing them out)
030
gravity-levity.bsky.social @gravity-levity.bsky.social · 08/09/2025
Just found this longer, and much better telling of the story: www.kavliprize.org/rainer-weiss... Looks like I mostly remembered things correctly, but the full story is much better than my telling.
kavliprize.org
Rainer Weiss life story
Rainer Weiss life story
321
gravity-levity.bsky.social @gravity-levity.bsky.social · 08/09/2025
10/10 "Wait, could you actually detect a relative change in distance of order one part in 10^20?" He spent all summer thinking about it. And that was the beginning of his obsession. It took 48 years from that moment to the first actual detection of a gravitational wave.
120
gravity-levity.bsky.social @gravity-levity.bsky.social · 08/09/2025
9/ The point of the problem was to show that there is a relative change in distance between the masses less than one part in 10^20, and you go "ahh, got it, the effect is negligible" and you move on. But during the summer after the class ended, the problem stuck with him and kept bothering him.
110
gravity-levity.bsky.social @gravity-levity.bsky.social · 08/09/2025
8/ It was a simple homework exercise, and he showed it as part of the colloquium: the solution takes less than a page, and he claims that everyone in the class was able to solve it correctly.
100
gravity-levity.bsky.social @gravity-levity.bsky.social · 08/09/2025
7/ At one point he conceived of a homework problem that would make the point to his students that dynamical effects in GR are extremely weak. So he designed a little problem where you imagine two free masses passing light back and forth to each other as a gravitational wave passes by.
110
gravity-levity.bsky.social @gravity-levity.bsky.social · 08/09/2025
6/ He was assigned to teach the General Relativity course, which at the time was in the Engineering department because no one in Physics wanted to teach it. But Waiss (in his description) didn't know any relativity. So he struggled all semester to stay "at best one day ahead of my students".
140
gravity-levity.bsky.social @gravity-levity.bsky.social · 08/09/2025
5/ Weiss finished his PhD, bounced around as an instructor a bit, and eventually managed to get a junior faculty position at MIT's Research Laboratory for Electronics.
100
gravity-levity.bsky.social @gravity-levity.bsky.social · 08/09/2025
4/ Shortly thereafter he convinced an MIT professor (Zacharias) to let him work as a lab tech. After a couple years in his lab, Prof. Zacharias managed to successfully lobby to get him accepted into the PhD program.
100
gravity-levity.bsky.social @gravity-levity.bsky.social · 08/09/2025
3/ So he went to MIT to study electrical engineering. Along the way he got a girlfriend at the University of Chicago. He figured that he could live in Chicago with her and return to MIT only when he needed to take exams. This plan didn't go well, he failed his classes, and he dropped out of college
100
gravity-levity.bsky.social @gravity-levity.bsky.social · 08/09/2025
2/ He told the story of how he came to be obsessed with gravitational waves. I'll do my best to recap that story, as best I can recall. It started with him getting obsessed with radios in high school. The fact that invisible waves could carry beautiful music through the air was captivating.
111
gravity-levity.bsky.social @gravity-levity.bsky.social · 08/09/2025
1/ Rainer Weiss, who conceived of the idea of a gravitational wave detector (which eventually became LIGO), has died. I was at MIT when the first gravitational wave detection was announced, and he gave perhaps the most inspiring colloquium I have ever heard. news.mit.edu/2025/profess...
news.mit.edu
Professor Emeritus Rainer Weiss, influential physicist who forged new paths to understanding the universe, dies at 92
MIT Professor Emeritus Rainer Weiss, a renowned experimental physicist and Nobel laureate whose groundbreaking work on the Laser Interferometer Gravitational-Wave Observatory (LIGO) confirmed a longst...
553
Reposted by @gravity-levity.bsky.social
Rabih Alameddine @rabihalameddine.bsky.social · 02/08/2025
The Mask of Sorrow is a monument located on a hill above Magadan, Russia, commemorating the many prisoners who suffered and died in the Gulag prison camps in the Kolyma region of the Soviet Union during the 1930s, 1940s, and 1950s.
5403104
gravity-levity.bsky.social @gravity-levity.bsky.social · 02/09/2025
I enjoyed this, thank you
010
Reposted by @gravity-levity.bsky.social
derek van vliet @derek.bike · 31/08/2025
here’s a version where the POV is blacked out whenever the driver takes their eyes off the road
902596997
gravity-levity.bsky.social @gravity-levity.bsky.social · 28/08/2025
It seems like this lawsuit is for books only? I don't think I even own the copyright to my published academic papers.
010
gravity-levity.bsky.social @gravity-levity.bsky.social · 27/08/2025
The important question is where I can get a t-shirt like that one
110
Reposted by @gravity-levity.bsky.social
Nigel Goldenfeld @nigelgoldenfeld.bsky.social · 20/08/2025
🧪⚛️ A great opportunity to contribute to the phenomenal science reporting by @quantamagazine.bsky.social
046
gravity-levity.bsky.social @gravity-levity.bsky.social · 18/08/2025
lol, I don't think I've ever created anything for which I said "I think it will be very beautiful" during the process, so you must be doing something right. As someone who loved the first book, I'm (patiently) excited to see what develops.
010
gravity-levity.bsky.social @gravity-levity.bsky.social · 18/08/2025
!! Did not realize that a sequel was coming!
110
gravity-levity.bsky.social @gravity-levity.bsky.social · 17/08/2025
Alberta prairie town
000
Reposted by @gravity-levity.bsky.social
Rabih Alameddine @rabihalameddine.bsky.social · 11/08/2025
It's a Rothko night
210119
gravity-levity.bsky.social @gravity-levity.bsky.social · 07/08/2025
I wrote a blog post about this once, and how the martingale method is like Feynman's ratchet gravityandlevity.wordpress.com/2010/12/07/f...
gravityandlevity.wordpress.com
Feynman’s Ratchet and the perpetual motion gambling scheme
Can you spot a perpetual motion machine when you see one? In physics, that question is equivalent to “can you spot a scam when you see one?”.  That’s because a perpetual motion ma…
030