Some of the physics students I tutor recently asked me to explain the Casimir Effect in simple conceptual terms, so here it is...
The Casimir Effect can be noticed if you take two plates separated by a very small distance in a vacuum; there will be a mysterious force that causes the plates to be attracted to each other.
The cause of this effect is analogous and similar to having two plates in a medium, like water; If you apply sound waves to the water with a wavelength greater than the distance of the separation of the plates you will notice the plates will attract. This is because the waves are too big to enter the space between the plates and as such they exert a force on the outside faces of the plates and none on the inside faces, causing them to attract.
However with the Casimir Effect the plates are in a vacuum, and the waves come from quantum fluctuations rather than traditional mechanical waves. As we know from quantum mechanics everything can be represented as waves. We also know that at very small dimensions we witness a "quantum foam", essentially particles and energy constantly flashing in and out of existence. These particles and energy are essentially the source of the waves in a vacuum. If the plates are sufficiently close then only particles and energy of sufficiently small wavelength will occur between the plates, while larger wavelengths would be free to form in the space outside the plates. As such a similar effect as our water example occurs where there are more waves to exert a force on the outside faces of the plates than on the inside faces. As such the two plates are again attracted to each other.
https://en.wikipedia.org/wiki/File:Water_wave_analogue_of_Casimir_effect.ogv
#Science #Physics #QM #Quantum #QuantumMechanics #wave #Waves
They are really arguing plain-text isn't inclusive enough...
Flight Simulator 2020 sure has got the lovecraft feeling right, cf. mountains of madness: https://i.redd.it/0b5dw48g4di51.png
https://aiweirdness.com/post/627344542828544000/planet-earth-from-above
my bet: in a few months #mozilla is going to announce that firefox will use blink as engine ✨
fuck design:
::-webkit-scrollbar {
width: auto !important;
height: auto !important;
max-width: auto !important;
max-height: auto !important;
min-width: auto !important;
min-height: auto !important;
}
::-webkit-scrollbar-track {
background-color: lightgrey !important;
}
::-webkit-scrollbar-thumb {
background-color: darkgrey !important;
border: 1px darkgrey solid !important;
border-radius: 3px !important;
}
::-webkit-scrollbar-thumb:hover {
background: darkgrey !important;
border: 1px darkgrey solid !important;
}
::-webkit-scrollbar-thumb:active {
background: lightgrey !important;
}
::-webkit-scrollbar-corner {
background: lightgrey !important;
}
works not on github, where somehow changing the width of the scrollbar sets it to be a completely white box. fucking 💯
fixed it with https://github.com/openstyles/stylus and
::-webkit-scrollbar {
width: auto !important;
height: auto !important;
max-width: auto !important;
max-height: auto !important;
min-width: auto !important;
min-height: auto !important;
}
It's kind of crazy how different "ideas" currently are floating around in the public space: that covid is a hoax, gates wants to nanochip us, russia haxx0red the us because of the vaccination (which is supposedly just nanochips for a fake illness), etc. i have the feeling that if one conspiracy is really true, it's that the population is being trained in accepting doublethink. it feels like something out of a psyops manual.
RT @element_hq@twitter.com
Welcome to Element! We’ve renamed @RiotChat@twitter.com, @NewVectorHQ@twitter.com and @ModularIM@twitter.com as Element and we’re ready to bring decentralised communication to the masses with @matrixdotorg@twitter.com!! Read all about it at https://element.io/blog/welcome-to-element 🔥🌊💨🌎️💃🚀🍾
🐦🔗: https://twitter.com/element_hq/status/1283291599846481921
i kind of like how #signal is being finally criticized. i never liked the ego of moxie and his opinions that
- federation is dead
- disallowing 3rd party clients is good
- that the choice of telephone numbers as identifier is ok and doesn't make the whole security a LARPing exercise
so, it's a bit weird that the current panic is over a recovery feature which is secure if you use a good passphrase 🤷♀️
state licensed lolbert and hypernatalist with a breeding kink. never watched rick & morty and i'm proud of it.
don't only rely on my words, read what happy customers wrote about me: "10/10 would buy again", "top seller, great value", "wildly incorrect", "teil des problems", "without imagination", "Repeated provocation using copy/paste.", "if you take a dump in my mentions, I just might notice the smell", "log out and never login again", "Du redest wirr.", "My brother in Christ, this is such a ridiculously dumb statement that I will no longer entertain this silly conversation.", "Auf Derailing-Diskussionen habe ich keine Lust. Finger über dem Blocken-Knopf.", "Wie gesagt, du kannst der Diskussion inhaltlich nicht folgen."
➡️ NO PRESSURE ⬅️ 💄NO DIAMOND💍
one day at a time.