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Kiana Khansmith

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"I'm Dorothy Gale from Kansas"
PUT YOUR BEARD IN MY MOUTH
Claire Keane
NASA
Jules of Nature
Misplaced Lens Cap
todays bird

titsay
h
we're not kids anymore.
let's talk about Bridgerton tea, my ask is open
Lint Roller? I Barely Know Her

❣ Chile in a Photography ❣
One Nice Bug Per Day
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@cresterida
Ahora paseas solitario por los muelles de Barcelona Fumas un cigarrillo negro y por un momento crees que sería bueno que lloviese Dinero no te conceden los dioses mas sí caprichos extraños Mira hacia arriba: está lloviendo
Particle and wave: A dichotomy
.“While the founding fathers agonized over the question “particle or “wave” de Broglie in 1925 proposed the obvious answer “particle” and “wave”.. This idea seems so natural and simple, to resolve the wave-particle dilemma in such a clear and ordinary way, that it is a great mystery to me that it was generally ignored”
- John Stewart Bell from Bell’s Theorem
Now having taken this grand tour in pilot-wave hydrodynamics, one must also be aware of the ongoing controversy that has wrapped around pilot-wave theory over the years.
De Broglie: The pioneer of Pilot wave theory
In the eyes of De Broglie, all this would be a trip down memory lane. In 1927, he proposed an alternate interpretation for quantum mechanics - The pilot wave theory by saying that all particles are accompanied by a pilot wave.
What on earth does that mean?
Here is the analogous version of it. Observe this animation carefully:
At first, you just see a wave propagating outwards like when you drop a pebble on a pond.
But when a vibrational excitation is given, that wave is split into two traveling waves moving in opposite directions.
And as you know when two waves traveling in opposite directions are set up just right, you obtain a standing wave pattern.
This is known as a pilot wave (or) wave that pilots/guides the droplet where to go.
How does it ‘pilot’ the droplet?
At each bounce, if the droplet is made to land on the ‘incline’ of a standing wave, it would propel the droplet forward at different rates based on the level of incline.
Think of a ball hitting an inclined plane for reference
If it were to land on a flat plane, of course, it would just bounce in the same place forever like so:
All this is essential because:
De Broglie said that all particles (electrons, protons, etc) like the droplet are accompanied by physical waves that act like a pilot to guide the particle along the trajectories.
And that the pilot waves spans the entire universe.
In the 1950s Bohm took this interpretation and made it even stronger. This came to be called as pilot wave theory or Bohm-de Broglie theory or just Bohmian Mechanics.
It offers determinism that Bohr’s theory doesn’t
The most satisfying thing about this theory is that it is deterministic, i.e., one can extract sufficient information to plot a particle’s path, something that is not allowed in Bohr’s interpretation of quantum mechanics.
Bohmian interpretation applied to the Double slit experiment. Notice that the path of the particles is clearly defined and none of the particle paths cross one another but yet one obtains the same interference pattern.
For the droplet these trajectories looked like this :
All weirdness that encapsulates quantum mechanics such as wave-particle duality, wave function collapse and the paradox of Schrodinger’s cat can be avoided by using Bohmian mechanics (because it is deterministic) BUT there is a catch - nonlocality.
The pilot wave idea gives up on locality: meaning that every experiment can only be understood in the context of the entire universe. The “pilot wave” brings information from all over the entire universe to influence an event’s outcome.
The cost of observing
In the series, we talked about the double-slit experiment. But here’s the deal: IF you observe each electron as they make their way through the slit, then the interference pattern disappers.
Disappearance of the interference pattern when electrons are observed
The way one explains this through the Bohmian interpretation is that the act of observing must obviously interfere/disturb the wave field. This, as a result, destroys the interference pattern.
Why isn’t Bohmian mechanics popular?
Sadly, the reason why Bohmian mechanics is not popular is NOT that it is scientifically inaccurate. It is able to perform equally well as other interpretations out there.
This answer by Thad Roberts does a really good job of explaining why people don’t subscribe to Bohmian mechanics. The major argument is that “It hasn’t produced anything new or predicted something better than the other interpretations.” among other critical factors.
The future for pilot-wave hydrodynamics
The droplet wave experiments remain as spectacular analogs of the pilot-wave theory at the macroscale.
But thus far, there has been no seminal evidence of pilot waves at the quantum scale.
In addition, the analogs are only capable of describing the simplest of interactions, and phenomena such as quantum entanglement are still an area of active research.
How does one weave together all of these experimental revelations that we have unearthed so far? Is there a much bigger picture of how nature manifests itself that we are yet to comprehend or are we staring at the end of a barrel?
Only time will tell.
Thank you for joining us this week on this amazing journey as we explored the essence of pilot wave hydrodynamics.
If you are thirsty to know more, FYFD has posted a list of useful resources that we compiled, do take a look at that.
I made that wave function collapse GIF ^_~ Quanta Magazine: A Private View of Quantum Reality
https://www.quantamagazine.org/quantum-bayesianism-explained-by-its-founder-20150604/
Wolf Galaxy
“The things you’re looking for, are in the world, but the only way an average chap will ever see ninety-nine percent of them is in a book. Don’t ask for guarantees. And don’t look to be saved in any one thing, person, machine, or library. Do your own bit of saving, and if you drown, at least die knowing you were headed for shore.”
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In Sydney you’ll find these fun urban interventions by artist Michael Pederson. (Source) For bizarre world posts: https://sixpenceee.com/tagged/world
China Opens World’s Coolest Library With 1.2 Million Books, And Its Interior Will Take Your Breath Away
The statue in Crowley’s flat. “it represents,” said the Production Designer, Michael Ralph, “Good and evil wrestling with evil triumphing.” “…are you certain that they’re wrestling?” I asked.
Aprendan a amar a la soledad, para que estén con ustedes mismos. El problema con la gente joven es su desenvolvimiento ruidoso y agresivo, acciones para no sentirse solo y esto es triste. El individuo debe aprender a estar consigo mismo desde chico. Pero eso no significa estar solo: significa no aburrirse con uno mismo. Que es un síntoma muy peligroso, casi una enfermedad.
– Andrej Tarkovskij.
those who dream only by night: the gothic short stories rec list
have you ever felt like you want to read more fiction in the gothic tradition, but you haven’t the money or the time, or you’re the sort of person who only reads a novel if you’re sure you like the writer? i can help with that! here is a list of short stories, novellas, and one poem, all of which are important in the gothic tradition, the gothic revival, or contemporary gothic fiction, and they are all on the internet! for free! (i enjoy making rec lists, but i particularly enjoy making rec lists where i know that everyone who reads the list can get all of it for free.) so, take a night, make some hot chocolate, and frighten the life out of yourself. you’ll thank me!
manfred by lord byron (1817)
the tell tale heart by edgar allan poe (1843)
carmilla by sheridan le fanu (1872)
lord arthur savile’s crime by oscar wilde (1887)
the yellow wallpaper by charlotte perkins gilman (1892)
lot no. 249 by arthur conan doyle (1892)
the great god pan by arthur machen (1894)
the turn of the screw by henry james (1898)
the monkey’s paw by w.w. jacobs (1902)
sredni vashtar by saki (1911)
casting the runes by m.r. james (1911)
the damned by algernon blackwood (1914)
the tomb by h.p. lovecraft (1922)
the garden party by katherine mansfield (1922)
a rose for emily by william faulkner (1930)
the lottery by shirley jackson (1948)
lamb to the slaughter by roald dahl (1953)
a good man is hard to find by flannery o’connor (1955)
the company of wolves by angela carter (1979)
i, cthulhu by neil gaiman (1986)
Si tuviera que asaltar el banco más vigilado de Europa y si pudiera elegir libremente a mis compañeros de fechorías, sin duda escogería un grupo de cinco poetas. Cinco poetas verdaderos, apolíneos o dionisíacos, da igual, pero verdaderos, es decir con un destino de poetas y con una vida de poetas. No hay nadie en el mundo más valiente que ellos. No hay nadie en el mundo que encare el desastre con mayor dignidad y lucidez. Son, en apariencia, débiles, lectores de Guido Cavalcanti y de Arnaut Daniel, lectores del desertor Arquíloco que atravesó un campo de huesos, y trabajan en el vacío de la palabra, como astronautas perdidos en planetas sin salida posible, en un desierto en donde no hay lectores ni editores, sólo construcciones verbales o canciones idiotas cantadas no por hombres sino por fantasmas. En el gremio de los escritores son la joya más grande y menos codiciada. Cuando un enloquecido joven de dieciséis o diecisiete años decide ser poeta, es un desastre familiar seguro. Judío homosexual, medio negro, medio bolchevique, la Siberia de su destierro suele cubrir de oprobio también a su familia: los lectores de Baudelaire no lo tienen fácil en la ESO, ni con sus compañeros de clase ni mucho menos con sus profesores. Su fragilidad, sin embargo, es engañosa. También su humor y las manifestaciones caprichosas de su amor. Tras esas sombras vagas se encuentran acaso los tipos más duros del mundo y seguramente los más valientes. No por nada descienden de Orfeo, que marcaba la cadencia de remo de los Argonautas y que bajó al infierno y volvió a subir, menos vivo que antes de la hazaña, pero vivo al fin y al cabo. Si tuviera que asaltar el banco más protegido de América, en mi banda sólo habría poetas. El atraco concluiría, probablemente, de forma desastrosa, pero sería hermoso.