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scipunk · 2 months

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The Matrix (1999) - Glitch in the Matrix

#glitch in the matrix #deja vu #the matrix #cyberpunk aesthetic #cyberpunk movies #deja vú #reality #simulation #anomaly #computer simulation #scifi #scifi movies #hackers #reality glitch

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bpod-bpod · 4 months

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Under Cholesterol's Control

Computer simulations reveal that cholesterol – a component of the cell membrane – controls the essential barrier's properties, and can engender both impermeability and bendiness

Read the published research paper here

Image from work by Matthias Pöhnl and colleagues

Computational Biology, Department of Biology, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany

Image originally published with a Creative Commons Attribution 4.0 International (CC BY 4.0)

Published in Nature Communications, December 2023

You can also follow BPoD on Instagram, Twitter and Facebook

#science #biomedicine #biology #cell membrane #cholesterol #computer simulation

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this-is-me19 · 3 months

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Things I have come to realize:

Humans are all traumatized and generational trauma is a big problem for us.

Hunter-gatherer society and all the animals that tried to kill them or the people who died

Trust is a serious problem when people are only looking out for themselves

If the computer simulation and/or holographic universe theories are real, medication is just downloading your latest update.

You have to read and comprehend the theories before you get it, maybe.

Cooking meat is making dead things more dead.

This is an observation.

#observations #epiphanies #humans are traumatized animals #generational trauma is a problem #mental health #cooking meat #holographic universe #computer simulation

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russell-chatterton-1980 · 2 years

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Today's creative offering 😎

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jcmarchi · 1 month

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Persistent “hiccups” in a far-off galaxy draw astronomers to new black hole behavior

New Post has been published on https://thedigitalinsider.com/persistent-hiccups-in-a-far-off-galaxy-draw-astronomers-to-new-black-hole-behavior/

Persistent “hiccups” in a far-off galaxy draw astronomers to new black hole behavior

At the heart of a far-off galaxy, a supermassive black hole appears to have had a case of the hiccups.

Astronomers from MIT, Italy, the Czech Republic, and elsewhere have found that a previously quiet black hole, which sits at the center of a galaxy about 800 million light years away, has suddenly erupted, giving off plumes of gas every 8.5 days before settling back to its normal, quiet state.

The periodic hiccups are a new behavior that has not been observed in black holes until now. The scientists believe the most likely explanation for the outbursts stems from a second, smaller black hole that is zinging around the central, supermassive black hole and slinging material out from the larger black hole’s disk of gas every 8.5 days.

The team’s findings, which are published today in the journal Science Advances, challenge the conventional picture of black hole accretion disks, which scientists had assumed are relatively uniform disks of gas that rotate around a central black hole. The new results suggest that accretion disks may be more varied in their contents, possibly containing other black holes and even entire stars.

A computer simulation of an intermediate-mass black hole orbiting a supermassive black hole, and driving periodic gas plumes that can explain the observations.

Credit: Petra Sukova, Astronomical Institute of the CAS

“We thought we knew a lot about black holes, but this is telling us there are a lot more things they can do,” says study author Dheeraj “DJ” Pasham, a research scientist in MIT’s Kavli Institute for Astrophysics and Space Research. “We think there will be many more systems like this, and we just need to take more data to find them.”

The study’s MIT co-authors include postdoc Peter Kosec, graduate student Megan Masterson, Associate Professor Erin Kara, Principal Research Scientist Ronald Remillard, and former research scientist Michael Fausnaugh, along with collaborators from multiple institutions, including the Tor Vergata University of Rome, the Astronomical Institute of the Czech Academy of Sciences, and Masaryk University in the Czech Republic.

“Use it or lose it”

The team’s findings grew out of an automated detection by ASAS-SN (the All Sky Automated Survey for SuperNovae), a network of 20 robotic telescopes situated in various locations across the Northern and Southern Hemispheres. The telescopes automatically survey the entire sky once a day for signs of supernovae and other transient phenomena.

In December of 2020, the survey spotted a burst of light in a galaxy about 800 million light years away. That particular part of the sky had been relatively quiet and dark until the telescopes’ detection, when the galaxy suddenly brightened by a factor of 1,000. Pasham, who happened to see the detection reported in a community alert, chose to focus in on the flare with NASA’s NICER (the Neutron star Interior Composition Explorer), an X-ray telescope aboard the International Space Station that continuously monitors the sky for X-ray bursts that could signal activity from neutron stars, black holes, and other extreme gravitational phenomena. The timing was fortuitous, as it was getting toward the end of the yearlong period during which Pasham had permission to point, or “trigger,” the telescope.

“It was either use it or lose it, and it turned out to be my luckiest break,” he says.

He trained NICER to observe the far-off galaxy as it continued to flare. The outburst lasted about four months before petering out. During that time, NICER took measurements of the galaxy’s X-ray emissions on a daily, high-cadence basis. When Pasham looked closely at the data, he noticed a curious pattern within the four-month flare: subtle dips, in a very narrow band of X-rays, that seemed to reappear every 8.5 days.

It seemed that the galaxy’s burst of energy periodically dipped every 8.5 days. The signal is similar to what astronomers see when an orbiting planet crosses in front of its host star, briefly blocking the star’s light. But no star would be able to block a flare from an entire galaxy.

“I was scratching my head as to what this means because this pattern doesn’t fit anything that we know about these systems,” Pasham recalls.

Punch it

As he was looking for an explanation to the periodic dips, Pasham came across a recent paper by theoretical physicists in the Czech Republic. The theorists had separately worked out that it would be possible, in theory, for a galaxy’s central supermassive black hole to host a second, much smaller black hole. That smaller black hole could orbit at an angle from its larger companion’s accretion disk.

As the theorists proposed, the secondary would periodically punch through the primary black hole’s disk as it orbits. In the process, it would release a plume of gas, like a bee flying through a cloud of pollen. Powerful magnetic fields, to the north and south of the black hole, could then slingshot the plume up and out of the disk. Each time the smaller black hole punches through the disk, it would eject another plume, in a regular, periodic pattern. If that plume happened to point in the direction of an observing telescope, it might observe the plume as a dip in the galaxy’s overall energy, briefly blocking the disk’s light every so often.

“I was super excited by this theory, and I immediately emailed them to say, ‘I think we’re observing exactly what your theory predicted,’” Pasham says.

He and the Czech scientists teamed up to test the idea, with simulations that incorporated NICER’s observations of the original outburst, and the regular, 8.5-day dips. What they found supports the theory: The observed outburst was likely a signal of a second, smaller black hole, orbiting a central supermassive black hole, and periodically puncturing its disk.

Specifically, the team found that the galaxy was relatively quiet prior to the December 2020 detection. The team estimates the galaxy’s central supermassive black hole is as massive as 50 million suns. Prior to the outburst, the black hole may have had a faint, diffuse accretion disk rotating around it, as a second, smaller black hole, measuring 100 to 10,000 solar masses, was orbiting in relative obscurity.

The researchers suspect that, in December 2020, a third object — likely a nearby star — swung too close to the system and was shredded to pieces by the supermassive black hole’s immense gravity — an event that astronomers know as a “tidal disruption event.” The sudden influx of stellar material momentarily brightened the black hole’s accretion disk as the star’s debris swirled into the black hole. Over four months, the black hole feasted on the stellar debris as the second black hole continued orbiting. As it punched through the disk, it ejected a much larger plume than it normally would, which happened to eject straight out toward NICER’s scope.

The team carried out numerous simulations to test the periodic dips. The most likely explanation, they conclude, is a new kind of David-and-Goliath system — a tiny, intermediate-mass black hole, zipping around a supermassive black hole.

“This is a different beast,” Pasham says. “It doesn’t fit anything that we know about these systems. We’re seeing evidence of objects going in and through the disk, at different angles, which challenges the traditional picture of a simple gaseous disk around black holes. We think there is a huge population of these systems out there.”

“This is a brilliant example of how to use the debris from a disrupted star to illuminate the interior of a galactic nucleus which would otherwise remain dark. It is akin to using fluorescent dye to find a leak in a pipe,” says Richard Saxton, an X-ray astronomer from the European Space Astronomy Centre (ESAC) in Madrid, who was not involved in the study. “This result shows that very close super-massive black hole binaries could be common in galactic nuclei, which is a very exciting development for future gravitational wave detectors.”

This research was supported, in part, by NASA.

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pansextastic · 2 months

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This is my crossover with the Beatles and the TV series The Orville. I am working on a second chapter, but I confess this story has been a bit of a struggle for me. However, I do hope you enjoy this first chapter.

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yodaprod · 2 months

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Prepare for take off...

#flight simulator #apple #computer #my photo #retrogaming #1980s #80s #80's #1983

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mr-payjay · 7 months

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Good Morning!

#osc #juice art #inanimate insanity #paper ii #oj ii #payjay #payjay ii #inanimate insanity fanart #paper fanart #oj fanart #payjay fanart #guess who's been getting into 90s/2000s educational computer games #anyway this fake little game isn't exactly Educational #its more like a life simulator? but also point and click #idk very cute i had fun making it #cw eyestrain

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pixelfireplace · 4 months

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Atari XE

source

#Atari XE #Atari #retro commercials #Flight Simulator #retro ads #retro computing #80s tech #80s nostalgia #80s aesthetic #80s #gaming #video games #retro gaming #retrowave #gif #retrocore #techcore #retro tech

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bonefall · 5 months

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May i ask why do you think that Brambleclaw wasn't a good father? not saying i disagree if that is what you think, but why do you? just wondering because i like what you say

Again I hope to have time sometime soon to make a big thing like I did with Breeze, but what gets me about Bramble is that incredibly self-concerned. Like, regularly unable to see past his own feelings to the point where he can't consider his effect on other people.

And Po3 in particular is ALSO trying to frame him like the perfect, most amazing dad in the world. It's for the dramatic irony of the reveal, and to make it EXTRA sad that he's going to abandon his children when he finds out they're adopted... but in the process, they just ignore anything crummy he does. Like he can Do No Wrong.

Particular instances I plan to get into;

When he's angry or disappointed, he's NASTY. He isn't this "super supportive papa" that the Three keep saying he is; he's most supportive when they're making him proud.

He fails to notice that Lionpaw's behavior is getting increasingly violent as a result of his mentor physically abusing him. Is that "Great Dad" material? To not notice your son is struggling?

We eventually learn that Ashfur approached him after one of these savage beatings to butter up to Brambleclaw, insisting that this sort of physical abuse is neccesary because it will give him a strong son.

Stress that again; Ashfur appealed to Brambleclaw's ego so he could keep beating his teenage child. In what world is that "Great Dad" material??

When Hollypaw then tries to tell her dad about how uncomfortable seeing her brother being savaged made her, Bramble tells her... ohh she's So smart, and So so responsible, and he relies on her to keep her brothers in line, and what Ashfur is doing is neccesary.

In any other book series, this would have been a MASSIVE condemnation of Brambleclaw. To be manipulated into allowing his son to get beat, and then turning around to tell his daughter he trusts her to understand it because she's so mature.

But because the Erins like Bramble so very much, it's not acknowledged. Then Ashfur tries to murder these kids later.

And like... again, they want him to be seen as so wonderful and amazing so that it's extra painful when he disowns these kids, but AGAIN, Brambleclaw is supposed to be this incredibly loving, unconditionally loyal, amazingly responsible father...

So how exactly is THAT consistent with abandoning his kids during the most upsetting time of their lives?

Does a wonderful father get consumed by his own pain and humiliation and cut off his kids, one of whom is in the middle of a breakdown? Does he take out his divorce on the children? Is being a "wonderful father" seeing the son you let get abused looking at you, DESPERATELY missing you as his dad, and just turning away?

Or, maybe, being a parent is about being mature. Putting aside your own personal anger or pain or ego to be there for your kids. Something like that???

And yet, he continues to act like that for an entire year. Not improving or self-reflecting at ALL the entire time. When it's miraculously revealed that Hollyleaf isn't DEAD, he's STILL wallowing. The kid he raised came back from the dead but FUCK that, who cares, "what about MY feelings?? Why is no one thinking about whats really important. Meeee."

(Mind you, he was willing to help this same person get away with murder in the last arc. But back then, she was his daughter. Now he doesn't care.)

Eventually SQUIRRELFLIGHT has to tell him that he shouldn't throw away his entire family because he's mad at her. Someone ELSE had to shout it down his thick skull that his bitterness is consuming him and he's ruining his life. Even after a year of punishment, she holds his hand like a big baby and guides him away from his OWN destructive behaviors.

But this isn't about Squilf. This is about Brambleclaw.

He enabled his son's child abuse. The abuser went on to attempt murder of his victim. He IMMEDIATELY turned on the kids he raised when he found out they were secretly adopted, because he was angry at his ex-wife. He only changed because the EX-WIFE told him to cut it out.

That's why I think he's not a great dad. I think talk of his Greatly Dadness are narration wank, and when you look closer, you see a FASCINATINGLY flawed character that the Erins hold back out of WEIRD writer favoritism.

#Warrior cats analysis #And again this is FASCINATING #I want to dissect him #He is my eternal rival. My white whale #My detested comrade with whom I am dying in the trenches #I wake up from cryosleep 100000 years in the future and the computer simulation picks the one man i hate the most in the world #Because through my seething fixation. He is somehow the only one who can keep me sane #As we float through the cold and uncaring vacuum of space.

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fuckyeahfluiddynamics · 4 months

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Beneath the Surface

Signs of a ship's passage can persist long after it's gone. The churn of its propellers and the oil leaked from its engines leave a mark on the water's surface that, in some cases, is visible even from orbit. (Image credit: A. Calado and E. Balaras) Read the full article

#2023gofm #CFD #computational fluid dynamics #direct numerical simulation #DNS #fluid dynamics #physics #science #turbulence

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captorcorp · 3 months

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installing buddy simulator 1984 and kinitopet on the same computer so they can fight to the death or kiss or whatever

#kcat talks #kinitopet #buddy simulator 1984 #after im done w the game im definitely looking up if the creator has played buddy sim bc there are so many similarities...#me when the 4th wall breaking game has a fucked up little computer guy >:3

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russell-chatterton-1980 · 2 years

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Simulated Reality

#computer simulation #artificial intelligence #reality #illusion #quote #code #simulation hypothesis #matrix #simulation theory #fractal #quantum #universe #ai #cosmos #quantum physics #infinite

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jcmarchi · 1 month

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Verifying the Work of Quantum Computers - Technology Org

New Post has been published on https://thedigitalinsider.com/verifying-the-work-of-quantum-computers-technology-org/

Verifying the Work of Quantum Computers - Technology Org

New method uses classical computers to check accuracy of complex quantum systems.

Quantum computers of the future may ultimately outperform their classical counterparts to solve intractable problems in computer science, medicine, business, chemistry, physics, and other fields. But the machines are not there yet: They are riddled with inherent errors, which researchers are actively working to reduce.

One way to study these errors is to use classical computers to simulate the quantum systems and verify their accuracy. The only catch is that as quantum machines become increasingly complex, running simulations of them on traditional computers would take years or longer.

Classical computers cannot fully simulate quantum systems’ work, especially those with more than 30 qubits. As a hypothetical example, if a quantum computer were to create the Mona Lisa, it could create many of the details but is prone to errors, hence the blurry appearance of the painting on the right in this artist’s concept. A classical computer could not create the details as well as the quantum computer. Still, it could roughly approximate the task of the quantum computer, hence the pixelation of the image on the left. To get around this limitation and better simulate quantum systems, researchers used a method to change the amount of “pixelation” in a classical computer simulation and then extrapolate from those results to estimate the “blurriness” of quantum systems.

Now, Caltech researchers have invented a new method by which classical computers can measure the error rates of quantum machines without having to fully simulate them. The team describes the method in a paper in the journal Nature.

“In a perfect world, we want to reduce these errors. That’s the dream of our field,” says Adam Shaw, lead author of the study and a graduate student who works in the laboratory of Manuel Endres, professor of physics at Caltech. “But in the meantime, we need to better understand the errors facing our system, so we can work to mitigate them. That motivated us to come up with a new approach for estimating the success of our system.”

In the new study, the team performed experiments using a type of simple quantum computer known as a quantum simulator. Quantum simulators are more limited in scope than current rudimentary quantum computers and are tailored for specific tasks. The group’s simulator is made up of individually controlled Rydberg atoms—atoms in highly excited states—which they manipulate using lasers.

One key feature of the simulator, and of all quantum computers, is entanglement—a phenomenon in which certain atoms become connected to each other without actually touching. When quantum computers work on a problem, entanglement is naturally built up in the system, invisibly connecting the atoms.

Last year, Endres, Shaw, and colleagues revealed that as entanglement grows, those connections spread out chaotically or randomly, meaning that small perturbations lead to big changes in the same way that a butterfly’s flapping wings could theoretically affect global weather patterns.

This increasing complexity is believed to be what gives quantum computers the power to solve certain types of problems much faster than classical computers, such as those in cryptography in which large numbers must be quickly factored.

But once the machines reach a certain number of connected atoms, or qubits, they can no longer be simulated using classical computers. “When you get past 30 qubits, things get crazy,” Shaw says. “The more qubits and entanglement you have, the more complex the calculations are.”

The quantum simulator in the new study has 60 qubits, which Shaw says puts it in a regime that is impossible to simulate exactly. “It becomes a catch-22. We want to study a regime that is hard for classical computers to work in, but still rely on those classical computers to tell if our quantum simulator is correct.” To meet the challenge, Shaw and colleagues took a new approach, running classical computer simulations that allow for different amounts of entanglement. Shaw likens this to painting with brushes of different size.

“Let’s say our quantum computer is painting the Mona Lisa as an analogy,” he says. “The quantum computer can paint very efficiently and, in theory, perfectly, but it makes errors that smear out the paint in parts of the painting. It’s like the quantum computer has shaky hands. To quantify these errors, we want our classical computer to simulate what the quantum computer has done, but our Mona Lisa would be too complex for it. It’s as if the classical computers only have giant brushes or rollers and can’t capture the finer details.

“Instead, we have many classical computers paint the same thing with progressively finer and finer brushes, and then we squint our eyes and estimate what it would have looked like if they were perfect. Then we use that to compare against the quantum computer and estimate its errors. With many cross-checks, we were able to show this ‘squinting’ is mathematically sound and gives the answer quite accurately.”

The researchers estimated that their 60-qubit quantum simulator operates with an error rate of 91 percent (or an accuracy rate of 9 percent). That may sound low, but it is, in fact, relatively high for the state of the field. For reference, the 2019 Google experiment, in which the team claimed their quantum computer outperformed classical computers, had an accuracy of 0.3 percent (though it was a different type of system than the one in this study).

Shaw says: “We now have a benchmark for analyzing the errors in quantum computing systems. That means that as we make improvements to the hardware, we can measure how well the improvements worked. Plus, with this new benchmark, we can also measure how much entanglement is involved in a quantum simulation, another metric of its success.”

Written by Whitney Clavin

Source: Caltech

You can offer your link to a page which is relevant to the topic of this post.

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arconinternet · 1 month

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Yes Prime Minister: The Computer Game (C64/DOS, Oxford Digital Enterprises, 1987/1988)

The game of the British comedy TV series. You can play it in your browser here, and read a digital manual for the C64 version here. For the DOS version, assume all disks are already inserted.

Tip: Sir Humphrey is the Cabinet Secretary. The protagonist, Prime Minister Jim Hacker, loves finishing his sentences.

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materialsscienceandengineering · 2 months

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How 'have you tried turning it off and on again?' works for chemistry, not just computers

A new study from Tel Aviv University has discovered that a known practice in information technology can also be applied to chemistry. Researchers found that to enhance the sampling in chemical simulations, all you need to do is stop and restart. The research was led by Ph.D. student Ofir Blumer, in collaboration with Professor Shlomi Reuveni and Dr. Barak Hirshberg from the Sackler School of Chemistry at Tel Aviv University. The study was published in Nature Communications. The researchers explain that molecular dynamics simulations are like a virtual microscope. They track the motion of all atoms in chemical, physical, and biological systems, such as proteins, liquids, and crystals. They provide insights into various processes and have different technological applications, including drug design.