#lorentz — Public Fediverse posts

Von Lore #Lorentz erzählt man sich, dass sie immer vor der Vorstellung in ihrer Garderobe die #Tagesschau verfolgt und man dabei ihr Schreien im ganzen Backstage-Bereich gehört habe.

I feel you, Lore, I feel you...
#Kabarettleaks

L’annichilente, deflagrante ma non troppo pratico cannone al plasma del Dr. Leyh

https://www.jacoporanieri.com/blog/?p=41774

#armi #tecnologia #tesla #bobine #elettricità #plasma #cannone #lorentz #esperimenti #scienza #ingegneri #personaggi #invenzioni #inventori #fulmini #distruzione #taser #tecnologia #ingegneria #innovazione #condensatori #batterie #esplosione

 
@wikipedia:
…"a closed timelike curve (CTC) is a world line in a Lorentzian manifold, of a material particle in spacetime, that is "closed", returning to its starting point. This possibility was … later confirmed by Kurt Gödel … If CTCs exist, their existence would seem to imply at least the theoretical possibility of time travel backwards in time" …

🔗 https://www.youtube.com/watch?v=-DPPccz5BcY 03 Jan 2024
🔗 https://en.wikipedia.org/wiki/Closed_timelike_curve

#Community #TimeTravel #Research #closedtimelikecurve #spacetime #lorentz

In 1904, Hendrik Lorentz and Henri Poincaré developed the time/space transformations that led to the special theory of relativity. #Poetry #Science #History #Physics #Relativity #Lorentz #Poincaré (https://sharpgiving.com/thebookofscience/items/p1904c.html)

#Spinors can be viewed as "square roots" of #sections of #vector #bundles.

https://en.m.wikipedia.org/wiki/Spinor

#Spinors are mathematical entities somewhat like #tensors, that allow a more general treatment of the notion of #invariance under #rotation and #Lorentz boosts.

https://arxiv.org/abs/1312.3824

https://youtu.be/b7OIbMCIfs4

#DonLincoln, #Fermilab - Do #Photons #Experience #Time?

https://www.youtube.com/watch?v=6Zspu7ziA8Y&ab_channel=Fermilab

#Science #Physics #Relativity #SpecialRelativity #GeneralRelativity #SpeedOfLight #Mass #ReferenceFrame #FrameOfReference #TimeDilation #LengthContraction #Lorentz

#SabineHossenfelder - Can #Time #Really #Slow Down?

https://www.youtube.com/watch?v=ZdrZf4lQTSg&ab_channel=SabineHossenfelder

#Science #Physics #GR #GeneralRelativity #SR #SpecialRelativity #Light #SpeedOfLight #Space #SpaceTime #ProperTime #TimeDilation #TwinParadox #TheTwinParadox #NewtonsBucket #BucketParadox #BlackHole #BlackHoles #Gravity #GravityWell #GravityWells #Minkowski #Lorentz #Einstein

Spacetime is a four-dimensional topological manifold with a smooth atlas carrying a torsion-free connection compatible with a Lorentzian metric and a time orientation satisfying the Einstein field equations (EFE).
\[\underbrace{(\mathcal{M},\mathcal{O},\mathcal{A},\nabla,\text{g},\mathcal{T})}_{\text{Relativistic spacetime}}\]
#spacetime #space #time #physics #relativity #generalrelativity #specialrelativity #differentialgeometry #manifold #theoreticalphysics #einstein #lorentz

So in #Lightyear, Buzz reaches a speed of 0.7𝑐 and somehow that turns his four minutes into four years relative to some planet.

Bro, do you even #Lorentz factor?

I hope Disney fired someone for THAT blunder!

One of my favorite #scikit-hep #python packages is #vector https://github.com/scikit-hep/vector by @henryiii et.al. Provides #numpy / awkward-arrays of 3 & 4-vectors with broadcasted vector methods, including relativistic operations such as #lorentz boosting, as one might now from #ROOT vectors. Such a nice abstraction, writing vector math is as easy as doing it by hand and also runs super fast. Using this package almost feels like cheating. 1/N

Balkon

Op verkenning door de #wetenschapsbuurt in #Schiedam #lorentz

🇺🇸 Les opérateurs Lorentz revendiquent une attaque informatique contre BioThane (biothane.us) #usa #belts #pvc #services #threats #products #medical #ransomware #distributors #fabrication #military #safety #lorentz #cyber #developement #products #financial #shareholders #industries #employees #commercial #facilities #building #laser #innovative #threats #databreach #business #market #informatique

Follow up on Causality as an emergent phenomenon...

(Ref. to: https://qoto.org/@Pat/106722620334765036)

I found sources on the topic:

Causality – Complexity – Consistency:
Can Space-Time Be Based on Logic and Computation?
https://arxiv.org/pdf/1602.06987.pdf

Causal Emergence in Quantum Mechanics
https://arxiv.org/pdf/1901.07471.pdf

Perfect signaling among three parties
violating predefined causal order
https://arxiv.org/pdf/1312.5916.pdf

Causality theory for closed cone structures with applications
https://arxiv.org/pdf/1709.06494.pdf

Plus an older article, "CPT Violation Implies Violation of Lorentz Invariance" by O.W. Greenberg, which might be related to the topic.
https://arxiv.org/abs/hep-ph/0201258

I just found these yesterday on arXiv and really haven't vetted them much. There's more out there, mostly from the last decade or so. Not sure why I couldn't find this before -- I tried multiple times this year to find this stuff and now a week after I posted here I find a bunch of stuff. Go figure...

Some of it is about non-locality and some also on temporal non-causality like disordered cause/effect. (Some authors use the term acausality instead of non-causality.)

Also, there's a prof at U. Miss. (Luca Bombelli, www.phy.olemiss.edu/~luca/) with some nice reference lists:

Causality in Quantum Field Theory
https://www.phy.olemiss.edu/~luca/Topics/st/causal_qft.html

Causality in Quantum Theory
https://www.phy.olemiss.edu/~luca/Topics/st/causal_qm.html

Causality
https://www.phy.olemiss.edu/~luca/Topics/st/causal.html

Hope this useful.

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#einstein #bohr #causality #spacetime #belltest #epr #paradox #light
#atom #atoms #electron #proton #quark #neutron #electricity #stem #technology
#cern #matter #energy #higgs #particle #lorentz #simultaneity #lightcone
#physics #QM #relativity #gravity #time #space

More detail on the non-causality poll...

I'd expect adherents to quantum mechanics to choose "sometimes".

Since QM appears to introduce uncertainty (probabilistic) in place of causality (deterministic) (i.e., it moves from certainty toward randomness), I don't see why a deeper dive couldn't move entirely to randomness (non-causality).

Non-causality appears to be a generalization of nonlocality (or perhaps complimentary to it).

Because of the results of the Bell test experiments, there appears to be renewed interest in explicit theories of nonlocality (e.g., extentions of de Broglie–Bohm theory) to make QM more palatable.

I think the development of a construct for a non-causal extent with causality emergent at macroscopic levels (or emergent at the quantum/macro interface) could serve the same purpose, but I haven't been able to find anything on that.

*** Does anybody know of anyone who is working on that? ***

Here are some more hashtags to cast the net a bit wider. (feel free to comment even after the poll is complete):

#einstein #bohr #causality #spacetime #belltest #epr #paradox #light
#atom #atoms #electron #proton #quark #neutron #electricity #stem #technology
#cern #matter #energy #higgs #particle #lorentz #simultaneity #lightcone
#physics #QM #relativity #gravity #time #space

#Wie gelingt #wechselseitig​e #Einschränkung der #Grad​e an #Freiheit, trotz ihrer #Ablehnung? (Integration)

#Vorschlag der #Verwertung von #Überfluss zu diesem #Zweck in seiner #Form #sinnlos​en #Instinkt​es.

#Bonn #Tauben #Eier #Gipseier #Integration #integriert

#Welt am #Sonntag, Frank #Lorentz, ca. 06.09.2020