Rochelle
@uberwensch.bsky.social
like if Just Some Guy was a girl
Pinned
Rochelle
@uberwensch.bsky.social
· May 7
What is entanglement? Itamar Pittowsky claimed that these results brought us right to the precipice of logical contradiction--but not over. Abner Shimoney described it as a piece of "experimental metaphysics." I'm a nobody, but I think entanglement is the most interesting thing ever discovered.
🧵⚛️
🧵⚛️
what do you do when you are working alone and don't really have the opportunity to talk with peers about what you're doing/thinking about
December 4, 2025 at 3:07 AM
what do you do when you are working alone and don't really have the opportunity to talk with peers about what you're doing/thinking about
just realized the copy of streater and wightman i have out from the library is signed by the authors
December 3, 2025 at 8:14 PM
just realized the copy of streater and wightman i have out from the library is signed by the authors
events like those at Oklahoma University are not random
Almost everyone in the US has seen these photos at some point: Nazi book burnings, seared into our national psyche as the quintessential expression of fascist tyranny. But few people know what books they were burning, beyond the fact that many of the books’ authors were Jewish.
December 2, 2025 at 12:11 AM
events like those at Oklahoma University are not random
it was a student group
Deutsche Studentenschaft, a student group controlled by Nazis, finally arrived to ransack and loot the Institut für Sexualwissenschaft on May 6, 1933. They brought a brass band to accompany them as they stormed the building and hauled out tens of thousands of documents related to…
December 2, 2025 at 12:10 AM
it was a student group
i really wanna know the answer to this
okay but how do we determine a particle's mass?
If it is evolving under the free Klein-Gordon eqtn at mass m we could assign it mass m, or we could treat it---in scattering theory---as mass m* < m with an interaction term.
If it is evolving under the free Klein-Gordon eqtn at mass m we could assign it mass m, or we could treat it---in scattering theory---as mass m* < m with an interaction term.
In classical mechanics you cannot discern a particle's mass from its free motions—these are always just the geodesics of the relevant spacetime. But the wave equations for a free quantum particle are different for different masses.
December 1, 2025 at 10:22 PM
i really wanna know the answer to this
okay but how do we determine a particle's mass?
If it is evolving under the free Klein-Gordon eqtn at mass m we could assign it mass m, or we could treat it---in scattering theory---as mass m* < m with an interaction term.
If it is evolving under the free Klein-Gordon eqtn at mass m we could assign it mass m, or we could treat it---in scattering theory---as mass m* < m with an interaction term.
In classical mechanics you cannot discern a particle's mass from its free motions—these are always just the geodesics of the relevant spacetime. But the wave equations for a free quantum particle are different for different masses.
December 1, 2025 at 6:01 PM
okay but how do we determine a particle's mass?
If it is evolving under the free Klein-Gordon eqtn at mass m we could assign it mass m, or we could treat it---in scattering theory---as mass m* < m with an interaction term.
If it is evolving under the free Klein-Gordon eqtn at mass m we could assign it mass m, or we could treat it---in scattering theory---as mass m* < m with an interaction term.
Reposted by Rochelle
I woke up early so here's the #MathCoffeeSelfie thread. I'll repost it later.
I like seeing all your faces every week. It lets me know what will happen to me if I continue in math.
I like seeing all your faces every week. It lets me know what will happen to me if I continue in math.
November 30, 2025 at 3:00 PM
I woke up early so here's the #MathCoffeeSelfie thread. I'll repost it later.
I like seeing all your faces every week. It lets me know what will happen to me if I continue in math.
I like seeing all your faces every week. It lets me know what will happen to me if I continue in math.
I was at a house party last week and i was asked to do the belt trick no less than four times in a row (someone new kept coming by while i was doing it)
its the probability over outcomes which is rotated by physically moving the device!
"ok so how do i visualize the little ball"
... hey so have you seen that thing with the belt?
"ok so how do i visualize the little ball"
... hey so have you seen that thing with the belt?
November 30, 2025 at 3:32 PM
I was at a house party last week and i was asked to do the belt trick no less than four times in a row (someone new kept coming by while i was doing it)
Silver atoms through a Stern-Gerlach device form two fairly well-separated clumps when they hit the screen.
If you rotate an arrow in your hands, its apparent height (the projection onto your visual field) attenuates to zero.
If you rotate an arrow in your hands, its apparent height (the projection onto your visual field) attenuates to zero.
November 30, 2025 at 3:14 PM
Silver atoms through a Stern-Gerlach device form two fairly well-separated clumps when they hit the screen.
If you rotate an arrow in your hands, its apparent height (the projection onto your visual field) attenuates to zero.
If you rotate an arrow in your hands, its apparent height (the projection onto your visual field) attenuates to zero.
I woke up early so here's the #MathCoffeeSelfie thread. I'll repost it later.
I like seeing all your faces every week. It lets me know what will happen to me if I continue in math.
I like seeing all your faces every week. It lets me know what will happen to me if I continue in math.
November 30, 2025 at 3:00 PM
I woke up early so here's the #MathCoffeeSelfie thread. I'll repost it later.
I like seeing all your faces every week. It lets me know what will happen to me if I continue in math.
I like seeing all your faces every week. It lets me know what will happen to me if I continue in math.
seeing third eye dog
November 27, 2025 at 8:38 PM
seeing third eye dog
Imagine a parable of two groups that set out in different directions in space toward two remote planets. Each of them is now so remote that they can each construct particle accelerators, with the entire duration of the construction projects at space-like separation to one another.
In a QFT context, we need Alice's scattering experiment to go *exactly the same way* (statistically) for all of Bob's locations x, while x ranges in a relatively-spacelike region O.
November 25, 2025 at 7:16 PM
Imagine a parable of two groups that set out in different directions in space toward two remote planets. Each of them is now so remote that they can each construct particle accelerators, with the entire duration of the construction projects at space-like separation to one another.
aight guys lock in its #MathCoffeeSelfie Sunday
November 23, 2025 at 3:50 PM
aight guys lock in its #MathCoffeeSelfie Sunday
Many-Worlds has some interesting overlap with thermo/direction of time stuff. Most straightforwardly, why does branching occur towards the future and not the past? The answer to this has to be ultimately thermodynamic in nature.
But more subtley, consider this: why do yours and mine and
But more subtley, consider this: why do yours and mine and
Since observers are macroscopic, they quickly entangle with the environment ("decoherence"), and the resulting terms in the quantum state behave like separate non-interacting worlds. How do we deal with observers in such a universe? That's where some philosophy of cosmology will come in.
November 20, 2025 at 8:42 PM
Many-Worlds has some interesting overlap with thermo/direction of time stuff. Most straightforwardly, why does branching occur towards the future and not the past? The answer to this has to be ultimately thermodynamic in nature.
But more subtley, consider this: why do yours and mine and
But more subtley, consider this: why do yours and mine and
my google drive of downloaded physics papers
I have just learned the acronym STABLE (Stash Acquired Beyond Life Expectancy) in reference to craft supplies, and it is so rude of the English language to call me out like that
November 20, 2025 at 3:51 PM
my google drive of downloaded physics papers
Separated from my coffee right now by extenuating circumstances but shortly i will share with you my #MathCoffeeSelfie. Make sure you send me yours!
November 16, 2025 at 5:35 PM
Separated from my coffee right now by extenuating circumstances but shortly i will share with you my #MathCoffeeSelfie. Make sure you send me yours!
*guy standing at town hall*
its okay to change the icon from a floppy disc. we will survive.
its okay to change the icon from a floppy disc. we will survive.
November 16, 2025 at 3:53 PM
*guy standing at town hall*
its okay to change the icon from a floppy disc. we will survive.
its okay to change the icon from a floppy disc. we will survive.
my beautiful girl,,
Slanted Saturn - From Val Klavans (valklavans.bsky.social) - https://flic.kr/p/k1h5xs
November 16, 2025 at 2:58 AM
my beautiful girl,,
something I hadn't really absorbed before is that, in quantum mechanics, free particles show their mass.
okay i need urgent help for a talk i am delivering tomorrow:
suppose you classify all the unireps of Poincare a la Wigner. how would you explain to a non-physicist audience why you identify the parameter m as mass?
suppose you classify all the unireps of Poincare a la Wigner. how would you explain to a non-physicist audience why you identify the parameter m as mass?
November 14, 2025 at 9:00 PM
something I hadn't really absorbed before is that, in quantum mechanics, free particles show their mass.
Reposted by Rochelle
Next talk at the #NaturalPhilosopy Symposium was by Emily Adlam, Against Self-Location. Commentary by physicist Thomas Hertog.
www.youtube.com/watch?v=_Ep-...
www.youtube.com/watch?v=_Ep-...
November 14, 2025 at 4:41 PM
Next talk at the #NaturalPhilosopy Symposium was by Emily Adlam, Against Self-Location. Commentary by physicist Thomas Hertog.
www.youtube.com/watch?v=_Ep-...
www.youtube.com/watch?v=_Ep-...
"unskilled labor" every single time i imagine having to make all those different kinds of drinks i get a panic attack
November 14, 2025 at 3:08 PM
"unskilled labor" every single time i imagine having to make all those different kinds of drinks i get a panic attack
damn yea i wonder what that was about. probly in good faith, tho.
As all this disgusting Epstein shit starts surfacing more and more, I hope we don't lose sight of the fact that apparently every major media outlet knew everything and instead spent their time money and energy attacking the trans community.
November 13, 2025 at 3:31 AM
damn yea i wonder what that was about. probly in good faith, tho.
Reposted by Rochelle
The most zoomed-in, highest-frame-rate movie of a solar eclipse ever taken from the Martian surface - in 2020.
Phobos is slowly drifting toward Mars. Tens of millions of years from now it will crash land.
Phobos is slowly drifting toward Mars. Tens of millions of years from now it will crash land.
November 11, 2025 at 9:33 PM
The most zoomed-in, highest-frame-rate movie of a solar eclipse ever taken from the Martian surface - in 2020.
Phobos is slowly drifting toward Mars. Tens of millions of years from now it will crash land.
Phobos is slowly drifting toward Mars. Tens of millions of years from now it will crash land.
okay i need urgent help for a talk i am delivering tomorrow:
suppose you classify all the unireps of Poincare a la Wigner. how would you explain to a non-physicist audience why you identify the parameter m as mass?
suppose you classify all the unireps of Poincare a la Wigner. how would you explain to a non-physicist audience why you identify the parameter m as mass?
November 11, 2025 at 5:29 PM
okay i need urgent help for a talk i am delivering tomorrow:
suppose you classify all the unireps of Poincare a la Wigner. how would you explain to a non-physicist audience why you identify the parameter m as mass?
suppose you classify all the unireps of Poincare a la Wigner. how would you explain to a non-physicist audience why you identify the parameter m as mass?
very jealous of people who can understand physics. i find it is like scaling a sheer wall that is also mysteriously greasy??
November 10, 2025 at 9:13 PM
very jealous of people who can understand physics. i find it is like scaling a sheer wall that is also mysteriously greasy??