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We saw E = ∫ √-g Tᵘᵥ ξᵥ [d³x]ᵤ was conserved if ∇ᵤ ξᵥ + ∇ᵥ ξᵤ = 0. It turns out, a quantity S = ∫ √-g Tᵘᵥ ζᵥ [d³x]ᵤ is still conserved if a more general condition holds: Tᵘᵥ ∇ᵤ ζᵥ = 0, for some vector field ζᵥ. This ζᵥ doesn’t need to be a Killing vector.
ha oué putain ça pique.. Je suis trop rouillé pour ces conneries putain faudrait que je m'y re (re re re) remette. Mais je pense que c'est avec des trucs comme ça qu'on peut sortir de l'ornière théorique dans laquelle on est. La RG on sent qu'on n'a pas encore tiré tout le jus.
Einstein, wanting something conserved
Alors voilà, moi je bloque sur ça, et je le vois plus via la philo/histoire des sciences. A chaque fois que j'y pense j'arrive à la même conclusion : l'énergie est un concept qui existe parcequ'on veut que quelque chose soit constant. Un exemple frappant de ça c'est les histoires d'énergie potentielle, le truc qui sort de nulle part, qui met tout le monde dans le vent mais qui marche super bien.
Tu connais la vieille contradiction du redshift ? les photons perdent en fréquence, donc en énergie, où va cette énergie ? c'est à devenir fou, et la réponse la plus convaincante que j'ai eu c'est qu'il n'y a pas de notion d'énergie définie pour l'univers dans son ensemble, c'est juste une notion qui dépend du référentiel et il n'y a pas un seul référentiel pour tout l'univers, point barre. J'imagine que ça rejoint les pérégrinations de l'article d'ailleurs, la dérivée covariante et tout ça. C'est de la pire intuition shamanique, mais ça m'étonnerait pas que ce genre de truc puisse faire le lien avec la quantique en fait..
@Robert Biloute - on diaspora-fr.org Concernant le décalage vers le rouge il faut aussi regarder du coté du théorème de Noether. S'il y a invariance par translation dans le temps, alors l'énergie est conservée. Or sur des durées pareilles et du fait de l'expansion de l'univers, il n'est pas certain qu'il y ait invariance par translation dans le temps et que donc la conservation de l'énergie soit respectée.
Exact c'est la réponse des physiciens des particules en général. ça se tient tout à fait, mais en pratique j'ai l'impression que ça amène plutôt à accepter le fait, à s'en accomoder sans chercher plus loin, du genre "ha ben c'est normal c'est pas symétrique dans le temps". L'approche par la RG révèle par contre une vraie limitation dans la définition du concept d'énergie. Bon là aussi le lien entre les 2 doit être passionant.
Democrats Prepare To Defy Federal Election Integrity | Drew Hernandez
Adrian Fontes, Arizona’s Secretary of State, has recently exposed himself again by publicly declaring his intent to resist federal efforts aimed at enhancing voter election integrity. Fontes expressed “concern” over President Trump’s executive order mandating proof of citizenship for voter registration, suggesting it could disrupt Arizona’s voting system. Fontes declared, “Tell them to go to hell,” as a response to Trump’s federal election security measures.
Tim Walz also publicly suggested at a tiny rally that Democrats should establish a shadow government, which already exists, in order to create a parallel government to oppose the Trump administration. Clearly, Democrats are preparing to defy any efforts to secure American elections, all they have left is to cheat. minds.com/newsfeed/17535515849…
...ew Hernandez
Adrian Fontes, Arizona’s Secretary of State, has recently exposed himself again by publicly declaring his intent to resist federal efforts aimed at enhancing voter election integri...
This numbness is due to the fact that these events are part of a broader global context in which the West itself is experiencing an illiberal drift and has progressively dismantled every aspect of the international law it once championed.
A humanitarian catastrophe of unthinkable magnitude is unfolding in Palestine, threatening regional stability — and it continues with the full, unquestioning support of the US and EU
From its thunderous ocean breakers crashing against rocky headlands and expansive sand beaches to its open grasslands, brushy hillsides, and forested ridges, Point Reyes offers visitors over 1500 species of plants and animals to discover.
2 days ago I did something I never expected to do. I spontaneously seized the moment and, in a phone call, came out to my 80 year old, very conservative, very narrow-minded mother, from whom I've been estranged for many years. But my only close family
She was totally accepting (after my explaining what #trans was). Always wanted a daughter. Found out I'd been born intersex, that kinda thing 😂. So happy I revealed myself to her before she dies. I needed to do it for myself, regardless of her response. Much more was said, but..
People can surprise you 💕 Love you all my trans family. Be visible. If they love you, be visible. If they loathe you, be visible. If they mean well, be visible. If they don't, be visible. If they are hypocrites, be visible. If they accept you, be visible. If they don't be visible. Be visible for you. You are 100% real and deserve to live it with all your heart 💗 🏳️⚧️ 💗
Renowned for the world’s tallest trees, Redwood’s landscapes span from open prairies and oak woodlands to pristine rivers and untamed coastline. This ancient home has supported people for thousands of years.
#Liban #1982, radiographie d'un massacre - Vidéo Dailymotion Le massacre de #Sabra et #Chatila, cinq jours et quatre nuits d'extrême terreur au Liban en septembre 1982 envers des femmes, des enfants et des vieillards, réfugiés palestiniens dans deux camps de Beyrouth, est une monstruosité de l'Histoire. Quarante ans après, il n'y a jamais eu aucun jugement...
Explore a rugged, isolated island far from our connected communities. Isle Royale offers adventures for backpackers, hikers, boaters, paddlers, and divers.
You assume that she's quoting exactly and not generally.... I am not so sure of that:) Anyway your point is exact yes, the level of details is crucial in language....like when an MSM title an article with "Science say Covid vaccines work...." or whatever other bullshit style title ..... It's a kind of useful semantic generalizations very useful for some propaganda (a lot of!), I'd say. Abusive generalizations can work specially well on persons who does not realize that details of language do evrything....
American Financing: Visit http://americanfinancing.net/redacted or call 866-890-8434. NMLS 182334, http://nmlsconsumeraccess.org .................... Genucel: Go to http://Genucel.com/REDACTED. Every
David Icke joins us together with filmmaker Christianne Van Wijk to talk about the new movie PERSONA NON GRATA about David's unprecedented ban from almost all European and many other countries of the world.
Watch the PERSONA NON GRATA Movie:
👉🏽 htt…
🦆 Participez à la cagnotte CANARD 2025 ! https://fr.tipeee.com/canard2025" 📝Envoyez-nous les actus que vous voulez qu'on traite sur actu@lecanardrefractaire.org ! 👉Paypal : contact@lecanardrefractaire.org 👉Chèque : Le canard réfractaire - 13 rue Edouard Ollivro - 22200 Guingamp Nous ne relevons pas des articles 200 & 238bis du code général des impôts, donc pas de déduction fiscale possible pour le moment 📝Trésorerie : docs.google.com/spreadsheets/d…
Bienvenu dans les source de l'Actu Réfractaire du 31-03 1 - @Agence France-Presse - Procès du RN Marine Le : https://x.com/afpfr/status/1906657928934744300 2 - @La_Croix - Assistants parlementaires Parlement Politique : https://www.youtube.
👉 Paypal : contact@lecanardrefractaire.org 👉 Chèque : Le canard réfractaire - 13 rue Edouard Ollivro - 22200 Guingamp (ENCAISSEMENT FIN DE MOIS) Nous ne relevons pas des articles 200 & 238bis du code général des impôts, donc pas de déduction fiscale possible pour le moment 📝 Trésorerie : docs.google.com/spreadsheets/d… 📊 Les graphiques pour 2025 : canva.com/design/DAGdaJsWans/4…
"neoliberalism was destined to fail—and it has delivered us to this precipice... The collapse of neoliberalism is inevitable, and it may bring humanity down with it."
Prelude What is unfolding in the United States is nothing short of grave. This is not the lament of a European critic—it is a simple truth: democracy is dead.
Many Korean parents are wary of the highly regimented Korean education system. If you have staff in Korea, it's amazing how they all know and rank each other by which school they went to and which year, despite being many years into their careers.
So some who can afford it ship their kids off to schools overseas, sometimes where they have relatives. Canada used to be a good choice. Seems that some Korean parents are still under that impression.
Mit hunderten Millionen Euro vom Staat entwickelt sich die Antifa, aber auch andere linksextreme Gruppen zunehmend zu Unterdrückungsapparaten gegen Oppositionelle. Doch die Bürger können sich gegen den woken Terror wehren. Wie, erläutert Michael Schäfer vom Bürgernetzwerk „Ein Prozent
The Chavista regime of Nicolás Maduro is playing with fire and knows it! U.S. Secretary of State Marco Rubio issued a stern warning yesterday from Guyana: any
Carney confronted again over ties to Ghislaine Maxwell and Jeffrey Epstein
David Menzies and Drea Humphrey react to an individual shouting questions at Mark Carney over his affiliation with convicted child traffickers Ghislaine Maxwell and Jeffrey Epstein.
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BREAKING: Trump warns Zelensky — “Back out of the rare earth deal and you’ve got big problems.” NATO lie destroyed, Ukraine exposed, and globalist strings snapped. This isn’t diplomacy. This is real power. And Trump holds the cards.
Didn’t have time to watch that video. But you know, “free” energy cannot exist, neither can perpetual motion. > The laws of thermodynamic forbid it. Usually “free energy” news are some kinda scam or practical joke
lol.
... in case that's not intentionally funny....
many a free energy device is accessing free energy like available energy, not over-unity. the source of the energy is defined. conventional calculations remain sane. (it's my understanding this is true of the vast majority of the over 3000 free energy device patents secreted by the year 2000 (as reported by patent office whistleblower Tom Valone). But just because the source is explained, does not mean it's not exotic or impressive like magic to us, compared to what we're used to. Many of these devices, I imagine, would be very underwhelming... like moderate efficiency improvements on radiant energy devices.
however, just to say that so much is well within the bounds of the 2nd law of thermodynamics, that does not mean everything is. ... there are reports... ...and the lines on the map, we drew. convincingly. for sure. but still, just lines we drew on the map. what fools we'd be to hobble ourselves with a self fulfilling prophecy such as that, and not even try. and what arrogant fools we'd be, to presume to know better, because of our priest's dogmas we sing as lullabies to each other in our intellectual-phase-locked scoffing at any who dont know the words?
the ones you see in the news, i dont doubt are incredulously farcical, in depiction or actual, but that would be a peculiar "mere coincidence" that so many inventors of free energy devices disappear or are killed.
i remember the free energy conferences of the 90s and 00s... it was increasingly expected, that the release of the suppressed clean energy technology was to be a soon fulfilled inevitable event.
... perhaps especially prominent was the one in july of 2001... just a couple months before the big weapon of mass distraction got deployed, derailing us from that future, terrorising us back into the PNAC plan (and the plans within which the creation of the PNAC sits, etc etc context context blah blah).
and that we were nearly there, was not the first time. in the 50s... it was a fairly widespread common expectation that the high tech seen was soon to be availed to all. spaceships and all. it's where a lot of the sci-fi of the era came from. art imitating life. ... and it goes back into "steam punk" era... though, i think less steam, more many a tinkerer making their own radios, batteries, tinkering around with magnets and all kinds of things to grow familiarity with materials and forces in ways modern consumers are kept separated as good as worlds apart from.
it's really not so far fetched.
follow the tech arc from michael faraday through nikola tesla.
(okies, ima stop being cunningham-triggered into an info-dump rant to help a friend, and go watch the video. heh.)
(p.s. zero inertia propulsion, zeroing out the inertial mass, whatever you call it, is so cool... if you've ever seen it... you know.)
Robert Biloute - on diaspora-fr.org
in reply to Emmanuel Florac • • •Emmanuel Florac
in reply to Emmanuel Florac • • •Robert Biloute - on diaspora-fr.org
in reply to Emmanuel Florac • • •Emmanuel Florac
in reply to Emmanuel Florac • • •@Robert Biloute - on diaspora-fr.org tu peux y aller c'est juste un article sur la relativité générale avec de bons morceaux juteux comme
L'intrus likes this.
Robert Biloute - on diaspora-fr.org
in reply to Emmanuel Florac • • •Robert Biloute - on diaspora-fr.org
in reply to Emmanuel Florac • • •ha oué putain ça pique.. Je suis trop rouillé pour ces conneries putain faudrait que je m'y re (re re re) remette. Mais je pense que c'est avec des trucs comme ça qu'on peut sortir de l'ornière théorique dans laquelle on est. La RG on sent qu'on n'a pas encore tiré tout le jus.
Alors voilà, moi je bloque sur ça, et je le vois plus via la philo/histoire des sciences. A chaque fois que j'y pense j'arrive à la même conclusion : l'énergie est un concept qui existe parcequ'on veut que quelque chose soit constant. Un exemple frappant de ça c'est les histoires d'énergie potentielle, le truc qui sort de nulle part, qui met tout le monde dans le vent mais qui marche super bien.
Tu connais la vieille contradiction du redshift ? les photons perdent en fréquence, donc en énergie, où va cette énergie ? c'est à devenir fou, et la réponse la plus convaincante que j'ai eu c'est qu'il n'y a pas de notion d'énergie définie pour l'univers dans son ensemble, c'est juste une notion qui dépend du référentiel et il n'y a pas un seul référentiel pour tout l'univers, point barre. J'imagine que ça rejoint les pérégrinations de l'article d'ailleurs, la dérivée covariante et tout ça.
C'est de la pire intuition shamanique, mais ça m'étonnerait pas que ce genre de truc puisse faire le lien avec la quantique en fait..
Robert Biloute - on diaspora-fr.org
in reply to Emmanuel Florac • • •Emmanuel Florac
in reply to Emmanuel Florac • • •Robert Biloute - on diaspora-fr.org
in reply to Emmanuel Florac • • •jackbot
in reply to Emmanuel Florac • • •Robert Biloute - on diaspora-fr.org
in reply to Emmanuel Florac • • •