reshared this
The state raised the minimum wage for fast-food workers—and employment kept rising. So why has the law been proclaimed a failure?Rogé Karma (The Atlantic)
Hardcore math post:
After my spectacularly popular post on Alfvén waves, there's nothing to do but write a much less popular post on the math behind them. People say magnetic field lines in a plasma can act like stretched rubber bands: if they're bent, they try to straighten out. There's a Wikipedia article on this idea, which is called 'magnetic tension':
en.wikipedia.org/wiki/Magnetic…
and I'd like to understand it.
They start with the equations of 'ideal magnetohydrodynamics' where you have a plasma with velocity vector field 𝐯, pressure p, density ρ and electric current vector field 𝐉 in a magnetic field 𝐁. It's called 'ideal' because we're assuming the plasma conducts electricity so well that the electric field is zero.
One of these equations, called the 'Cauchy momentum equation', says the plasma accelerates due to two forces:
the gradient of pressure, or more precisely −∇p, and
the force caused by the magnetic field, which is 𝐉 × 𝐁 as usual - this is called the Lorentz force.
They then do some fun vector calculus manipulations. Assuming |𝐁| is constant everywhere, they find a term in the force whose magnitude is the curvature κ of the magnetic field line, which points to the center of curvature of the magnetic field - where you approximate the magnetic field locally as going around a circle of radius 1/κ. See the picture to understand what the hell I just said.
I think I follow the calculation, but this is a force on the plasma, right? Not the magnetic field line per se! So why do they interpret it as the field line wanting to straighten out? If we knew 𝐯 is proportional to 𝐁 that would make sense, but they don't say anything about that.
#Installfest (zatím) není na Fediverse, proto ve stručnosti zde: bude se konat 15. a 16. března 2025 a už lze i přihlašovat přednášky: installfest.cz/if25/
#konference #čvut #felčvut #cfp
Konference pro začátečníky i odborníky o Linuxu, open-source a o všem, co s tím souvisí.installfest.cz
Nulla di nuovo, ma carino che anche canali mainstream parlino di alternative a #Google #Foto
#alternatives #alternative #immich #photo #degoogled #selfhosting
ISCRIVITI se ti piace la TECNOLOGIA ➡️ http://www.youtube.com/c/TuttoTechNet?sub_confirmation=1Google Foto è uno dei migliori servizi online di sempre, perme...YouTube
Quite enjoyed watching #Wingwomen on #Netflix imdb.com/title/tt21638298/
Pretty unusual action movie. Quite entertaining. Definitely passes the #BechdelTest
Peter Vágner likes this.
reshared this
In this episode we revisit the Lists Feature. We discuss adding, deleting, creating, archiving, and sharing lists.Spotify for Creators
We have released an updated version of our App for #38c3. You can find it...
On GitHub: github.com/c3nav/c3nav-android…
In our F-Droid Repo: f-droid.c3nav.de/fdroid/repo/
... and hopefully also soon on Google Play.
The official F-Droid repository is still not recommended as it is unlikely to update in time.
We hope to make Wi-Fi positioning available during the upcoming day. Stay tuned.
An Android wrapper for c3nav. Contribute to c3nav/c3nav-android development by creating an account on GitHub.GitHub
reshared this
Join the Braille Institute on Thursday, January 9 at 4 pm Eastern for their free webinar: Intro to JAWS Workshop brailleinstitute.org/find-serv…
#JAWS #TrainingWebinar #BrailleInstitute
Learn to do basic tasks like reading documents and getting information from pictures on your PC using Jaws for Windows and a keyboard.Kelly Hill (Braille Institute)
I heard this in a podcast and wanted to see the study: apparently, speaking a tonal language has a relationship with having an ear for perfect pitch
I grew up speaking several tonal languages alongside English and it was always easy for me to pick up music, and all tonal languages. I can perfectly mimic Vietnamese even if I don’t speak it, to the extent that Vietnamese aunties scold me for being a foreign born Vietnamese person with a poor vocabulary
sciencedaily.com/releases/2004…
Could it be that cellist Yo-Yo Ma owes his perfect musical pitch to his Chinese parents? While we may never know the definitive answer, new research from the University of California, San Diego has found a strong link between speaking a tone language…ScienceDaily
In this article I explore Blind and Low Vision Smart Glasses and explain the different types, and how they can be used.Tim Dixon (TIM DIXON)
Seamlessly connect your wired headphones to modern USB-C devices with the Samsung USB-C to 3.5mm Headphone Jack Adapter.A. T. Guys
Shop now for all the best Catholic books from Catholic Answers. Search our catalog of apologetics books and media. We have everything you need to defend and explain the Faith.shop.catholic.com
This year was all about preservation for the Internet Archive. This year, libraries have faced unprecedented attacks both from large corporations and malicious actors.
Despite these challenges, the Internet Archive is more committed than ever to fighting for access to public information for all those who seek it.
If you’re a fan, help provide Universal Access to All Knowledge:
archive.org/donate/?origin=mst…
FediVerseExplorer likes this.
People posted knitted scarves from across the country to add to the project celebrating the Doctor.BBC News
Hey... did you know? At midnight on March 31st, the Internet will be temporarily shut down for the annual Spring Cyber Cleaning? Read on to get the scoop on this, Abraham Lincoln's opinion on fake news, and other dubious “facts” about computers and …Bob Rankin (Ask Bob Rankin)
I don't know if y'all can access this story, but @404mediaco has a piece that I helped with. It is:
"AI Comes for a Centuries-Old Craft" and the proliferation of #AIslop beginner books. Preying on beginners who don't know what's real or not is loathsome, and underway.
#BobbinLace #NeedleLace #tatting #lacemaking
404media.co/email/623759d6-610…
AI infiltrates the lace-making community.Samantha Cole (404 Media)
Tamas G reshared this.
Separately, I was planning to launch this project in January, after the holidays. But BECAUSE REASONS it makes sense to launch now.
I'm recruiting #Wikipedia editors for lace pages, and got a grant for it from @wikipedia .
#lace #BobbinLace #NeedleLace #tatting #lacemaking
With help from a grant from the Wikimedia Foundation, a project to Enhance Lace Content in Wikipedia is underway. This video is an overview of that project, ...YouTube
Managing the volume on an Android device is a fundamental aspect that every user should understand. Android organizes audio into several distinct channels,Kareen Kiwan (Accessible Android)
Steffen reshared this.
Naughty or nice? No one needs to know - not now, not next year.
Sign up for your free encrypted mailbox: app.tuta.com/signup
Get a free email account with quantum-safe encryption and best privacy on all your devices. Green, secure & no ads!Tuta Mail
We're demystifying the reasons meatballs at a restaurant somehow taste better than homemade. And with these tricks up your sleeve, yours will be just as tasty.Monika Sudakov (The Daily Meal)
Khronos reshared this.
Get the facts about the change from Outlook 'classic' to 'new' and when it is really happening. Don't fall for misinformation about Outlook's future.Office-Watch.com (Office Watch)
#CatsOfMastodon owners:
For the cover of my next book, I would like to illustrate software compartmentalisation with a montage of cats in boxes. I probably need at least 16 pictures of cats in boxes, ideally views from directly above. If you have such pictures that you took or otherwise own the rights to and you would be happy for me to use them, please can you post them in this thread along with how you’d like to be attributed? No ‘AI’ pictures please.
Thank you in advance!
Edit: I've added a very rough cut of what I actually want.
Edit 2: Slightly better version. I'm mostly happy with this one. Not as good a professionally designed one, but the correct number of cats.
if you're interested in actually overthrowing Big Android (rather than living off Googles scraps) be sure to come by the #LinuxMobile assembly this congress. There's a revolution brewing :3
#38c3 #MobileLinux #ccc #postmarketOS
LINMOB.net is a blog about LINux on MOBile devices. With the PinePhone (Pro) and Librem 5 shipping it is back to report on GNU+Linux on mobile devices.LINux on MOBile
We would like to ask you again to test yourself every day for Covid before you come to the CCH. We also encourage you to wear masks - #CovidIsNotOver and other nasty things also go around.
Masks will be available at the entrance of the venue. #38C3
Did you know, there are many completely free sample libraries out there these days, some could help you end up in writing for your next film or TV show, genuinely?
I wrote this piece of music for my podcast using purely *free* libraries and nothing else.
#InspiredBySound - Musical Breakdown - #StroongeCast Podcast Music: youtu.be/Ra7prQ6d9Pw
This piece of music is for the podcast 'StroongeCast' I co-created with my wife Kirsten. Every podcast needs a musical intro (or at least I believe so) and t...YouTube
@RaccoonForFriendica do you want to try the new "Card" layout for posts? All you have to do is downloading version 0.4.0-beta02 and try it out! Using Compose Multiplatform, customizing UI is as easy as eating a piece of cake.
This version also contains a fix for the search text field which was not scrollable horizontally when its content exceeded the available width, plus some localization updates.
We're reaching towards the 0.4.0 milestone, just another feature (audio playback) and then it'll be ready to go!
#livefasteatrash #procyonproject #raccoonforfriendica #fediverseapp #friendica #friendicadev #mobileapp #mobiledev #kotlin #kmp #compose #opensource #foss #sideproject
like this
reshared this
Poliverso - notizie dal Fediverso ⁂ likes this.
RaccoonForFriendica reshared this.
When I spent a year with the DotPad and now 6 months and going with the Monarch, besides the fact that the Monarch is the only Multi Line Tactile display still available in Australia, here are some of my advantage points for the Monarch over the DotPad.
Can be used as a stand alone device,
20 hours battery life,
On/off, USBC, USBA, HDMI, 3.5MM ear phone jack, and volume up/down buttons,
Users used to the Braille Note, Brailliant, and Mantis will pick up same concepts used on the Monarch (its KeySoft),
Plug in a QWERTY keyboard and/or portable HDMI display,
Braille input keyboard,
10 line by 32 cell tactile display,
Removable metal template to replace membrane over the pins,
Speech output,
Navigation and Zoom keys, Point and click to move cursor or Zoom tactile graphics,
Button to refresh tactile array at any time,
Tactile horizontal and vertical scroll bars to let user know where they can scroll,
Easily jump around tactile graphic with keyboard short cuts,
increase line spacing when reading Braille,
Easy to identify cursor in menus, and place focussed line that contains cursor to the top of the display,
Access various file formats,
Various applications including web Browser (beta), email (beta), Tactile Library (APH), Maths graphing calculator, Word Processer, Braille Editor, Book Reader (victor Reader),
2025 WingIT app for iOS drawing, and Terminal screen reader support.
reshared this
SuspiciousDuck
in reply to Daniel Tóth • • •Daniel Tóth
in reply to SuspiciousDuck • • •Väčšina Slovákov nevie, čo znamenajú stupne 1 a 5 na hlavici radiátora. Prichádzajú o stovky eur - EMEFKA
Henrieta Balázsová (Emefka)SuspiciousDuck
in reply to Daniel Tóth • • •Daniel Tóth
in reply to SuspiciousDuck • • •Pointa je, že ľudia evidentne nevedia, že tie čísla znamenajú stupne. A ak si ľudia nevedia zistiť takú hlúposť, asi si nebudú vedieť zistiť aj dôležitejšie veci. Ťažké myšlienkové pochody, ja viem.
SuspiciousDuck
in reply to Daniel Tóth • • •Daniel Tóth
in reply to SuspiciousDuck • • •SuspiciousDuck
in reply to Daniel Tóth • • •rozmer bytu, zateplenie typ radiátora etc etc a koniec koncov výkon "teplárne".
edit: okná tiež
Daniel Tóth
in reply to SuspiciousDuck • • •SuspiciousDuck
in reply to Daniel Tóth • • •SuspiciousDuck
in reply to SuspiciousDuck • • •Pavol Salgari
in reply to Daniel Tóth • • •SuspiciousDuck
in reply to Pavol Salgari • • •muž s klapkami na očích
in reply to SuspiciousDuck • • •Ja jsem to taky nepochopil, takze tipuju, ze to je humor pro hloupe lidi, ktery geniove jako my nemuzeme vstrebat.
CC: @danieltoth@infosec.exchange
Daniel Tóth
in reply to muž s klapkami na očích • • •muž s klapkami na očích
in reply to Daniel Tóth • • •dekujeme, pane Toth, my iq o dvou cifrach, takze do hlavy sune se to pomalu
CC: @SuspiciousDuck@mastodon.arch-linux.cz
Daniel Tóth
in reply to muž s klapkami na očích • • •SuspiciousDuck
in reply to Daniel Tóth • • •muž s klapkami na očích
in reply to Daniel Tóth • • •dajta si mna do bloku, pan kokot nechapajuce humor
CC: @SuspiciousDuck@mastodon.arch-linux.cz
SuspiciousDuck
in reply to muž s klapkami na očích • • •muž s klapkami na očích
in reply to SuspiciousDuck • • •seru na to, tohle je nad moje sily.
CC: @danieltoth@infosec.exchange
SuspiciousDuck
in reply to muž s klapkami na očích • • •Daniel Tóth
in reply to muž s klapkami na očích • • •Ono pokojne stačí nekomentovať za každú cenu cudzie príspevky, tak jednoduché to je.
muž s klapkami na očích
in reply to Daniel Tóth • • •velice se omlouvam, prosim odpuste mi.
Nemuzu si odpustit, nebot jakozto strojovy asketik - kazdej kdo ma profilovej obrazek korporatni-apple mrdky je pro me obeti rezimu. rad bych vas zachranil, ale vy budete uz asi ztracenej.
Preji vsechno nejlepsi, at se dari!
CC: @SuspiciousDuck@mastodon.arch-linux.cz
Daniel Tóth
in reply to muž s klapkami na očích • • •muž s klapkami na očích
in reply to Daniel Tóth • • •Dekuji za reakci na muj komentar!
CC: @SuspiciousDuck@mastodon.arch-linux.cz
SuspiciousDuck
in reply to muž s klapkami na očích • • •