pglpm

joined 2 years ago
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[–] pglpm@lemmy.ca 16 points 2 days ago (2 children)

"In fact, open source is more of a cultural behavior than a commercial one, and contributing to it earns us respect" [the founder] added.

Wisdom.

[–] pglpm@lemmy.ca 1 points 2 weeks ago

Won't people rebel to this? Where's one's dignity?

United States of chinA

[–] pglpm@lemmy.ca 3 points 2 weeks ago

United States of chinA

[–] pglpm@lemmy.ca 1 points 2 weeks ago* (last edited 2 weeks ago)

It isn't Trump. It's the majority of USA citizens. They voted.

[–] pglpm@lemmy.ca 4 points 3 weeks ago* (last edited 3 weeks ago) (1 children)

No idea how to read the paper's title. Once upon a time there were things called prepositions, like "of", "for", "with", "on"... Probably now they're too modern-writer reduced cell-activity difficult.

[–] pglpm@lemmy.ca 3 points 3 weeks ago

I wonder which server they use. I've only had headaches trying to use Matrix for collaboration, especially if people were on different servers.

[–] pglpm@lemmy.ca 7 points 3 weeks ago* (last edited 3 weeks ago) (2 children)

First listed: Beeper at beeper.com - closed source 🤔

[–] pglpm@lemmy.ca 1 points 3 weeks ago

The question of what an electron really is, is still open as far as I know. Even the question of whether it's a "particle", is still open. In many or most theories the question of "what it is" is somewhat bypassed. In quantum field theory you describe electrons as a field (like the electromagnetic field), but all fields have the peculiar property that they show energy exchanges in very localized, point-like regions of space – that's why you can think of them as particles sometimes. Take a look at Wald's book to get an idea.

There are even still open theories that try to describe electrons as mini charged black holes; not to speak about strings, and so on...

4
Chapter 152 (fanfox.net)
 

New One Punch Man (original) chapter out!

https://fanfox.net/manga/onepunch_man_one/c152/1.html

[–] pglpm@lemmy.ca 42 points 4 weeks ago* (last edited 4 weeks ago) (8 children)

The usual misleading sensationalistic title. It isn't the "shape of the electron" at all. A less misleading – but still not quite correct – explanation is that they have determined the statistical distribution of electron quantum states in a material. Very roughly speaking, it tells us where we're more or less likely to find an electron in the material, and in what kind of state. Somewhat very distantly like a population density graph on a geographical map. Determining such a population density doesn't mean "revealing the shape of a person".

The paper can also be found on arXiv. What they determine is the so-called quantum geometric tensor. I find the paper's abstract also misleading:

The Quantum Geometric Tensor (QGT) is a central physical object...

but it's a statistical object more than a "physical" one.

It's a very neat and important study, and I don't understand the need to be so misleading about it :(

[–] pglpm@lemmy.ca 3 points 4 weeks ago

Cheers! for some reason my search didn't bring that up!

[–] pglpm@lemmy.ca 1 points 1 month ago

Unfortunately they cannot yet be resized on the fly, as instead some vertical-tab extensions allow you to do. But it's a step in the right direction!

 

Here's a little physics riddle. It's really meant as a moment of self-reflection for physics teachers (I invite you to compare what answers you'd give within Relativity Theory).

We're in the context of Newtonian mechanics.

There are three small bodies. In the inertial coordinate system (t, x, y, z), we know the following about the three bodies (at a given instant of time):

  • The first has mass 3 kg
  • The second has velocity (1, 0, 0) m/s
  • The third has momentum (2, 0, 0) kg⋅m/s

Now consider a new coordinate system (t', x', y', z') related to the first by the following transformation (a Galileian boost):

t' = t, x' = x - u⋅t, y' = y, z' = z with u = 1 m/s

Questions:

  • What is the mass of the first body in the new coordinate system?
  • What is the velocity of the second body in the new coordinate system?
  • What is the momentum of the third body in the new coordinate system?

Can you give definite answers to these three questions, and motivate your answers with simple physical principles? Note that by "definite answer" I don't necessarily mean an answer with a definite numerical value.

 

cross-posted from: https://lemmy.ca/post/29254007

https://www.lieffcabraser.com/antitrust/academic-journals/

"On September 12, 2024, Lieff Cabraser and co-counsel at Justice Catalyst Law filed a federal antitrust lawsuit against six commercial publishers of academic journals, including Elsevier, Springer Nature, Taylor and Francis, Sage, Wiley, and Wolters Kluwer, on behalf of a proposed class of scientists and scholars who provided manuscripts or peer review, alleging that these publishers conspired to unlawfully appropriate billions of dollars that would otherwise have funded scientific research."

 

https://www.lieffcabraser.com/antitrust/academic-journals/

https://www.forbes.com/sites/michaeltnietzel/2024/09/16/scientists-file-antitrust-lawsuit-against-six-journal-publishers/

https://www.reuters.com/legal/litigation/academic-publishers-face-class-action-over-peer-review-pay-other-restrictions-2024-09-13/

"On September 12, 2024, Lieff Cabraser and co-counsel at Justice Catalyst Law filed a federal antitrust lawsuit against six commercial publishers of academic journals, including Elsevier, Springer Nature, Taylor and Francis, Sage, Wiley, and Wolters Kluwer, on behalf of a proposed class of scientists and scholars who provided manuscripts or peer review, alleging that these publishers conspired to unlawfully appropriate billions of dollars that would otherwise have funded scientific research."

"Deutsche Bank aptly describes the Scheme as a “bizarre” “triple pay system” whereby “the state funds most of the research, pays the salaries of most of those checking the quality of the research, and then buys most of the published product.”"

 

cross-posted from: https://lemmy.ca/post/27749197

I've been trying to use Matrix to replace sites like Discord or Slack. But it seems that if a user creates an invitation-only room in a server, then invited users who are registered on other servers get errors when trying to join. Not very useful error messages either: "Failed to join room". (In my case, I tried creating accounts and rooms at nitro.chat and then at converser.eu, but friends registered at matrix.org don't manage to join).

Quite a let-down. Anyone who's facing the same problem and has maybe managed to solve it?

89
submitted 6 months ago* (last edited 6 months ago) by pglpm@lemmy.ca to c/fediverse@lemmy.world
 

I've been trying to use Matrix to replace sites like Discord or Slack. But it seems that if a user creates an invitation-only room in a server, then invited users who are registered on other servers get errors when trying to join. Not very useful error messages either: "Failed to join room". (In my case, I tried creating accounts and rooms at nitro.chat and then at converser.eu, but friends registered at matrix.org don't manage to join).

Quite a let-down. Anyone who's facing the same problem and has maybe managed to solve it?

 

Doesn't CrowdStrike have more important things to do right now than try to take down a parody site?

That's what IT consultant David Senk wondered when CrowdStrike sent a Digital Millennium Copyright Act (DMCA) takedown notice targeting his parody site ClownStrike.

Senk created ClownStrike in the aftermath of the largest IT outage the world has ever seen—which CrowdStrike blamed on a buggy security update that shut down systems and incited prolonged chaos in airports, hospitals, and businesses worldwide....

 

A new pack of pure Awesomeness is hopefully arriving soon...

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