Everything posted by geordief
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The simplest cause of the accelerating expansion of the universe
😟
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The simplest cause of the accelerating expansion of the universe
I think you forgot the link to the video....?
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New religion of Nothingness
Get in touch with these guys and suggest they add a few blind portals around the globe? https://eu.usatoday.com/story/news/world/2024/05/09/portal-dublin-new-york/73633531007/ "Two massive circular livestream video "portals" now connect New York City and Dublin, Ireland – all part of an artist's plan to bring the world closer togetherQ Maybe with the odd random side effect generated by the passers by? (as in "we are all a part of the nothingness")
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Overpopulation in 2023
Could we not just make the world a little bigger and carry on as normal? Dig a hole into the centre of the earth and let off a nuclear bomb ( or an anti gravity device ?) so as to increase the radius of the planet to a suitable degree. The surface would expand and there would be endless opportunities for new resource exploitation and enough lebensraum for all. Those who don't like the idea could just sign up with Elon Musk.
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What are you reading?
"The Jewish Cemetery at Newport " By Henry Wadsworth Longfellow(1852) https://www.poetryfoundation.org/poems/44634/the-jewish-cemetery-at-newport https://www.mainememory.net/sitebuilder/site/3327/page/5254/display?use_mmn=1
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What might things have looked like before the Higgs Field?
Was everything expanding like there was no tomorrow until the Higgs Field " condensed" out of whatever there was before it? And that put a brake on things? Is that when spacetime curvature began ? Was the Higgs Field the last Field to form?
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Why use the atomic bomb on Japan?
A friend of mine was scammed by someone pretending to be from Revolut. First they sent her a text pretending to be from her electricity company with a link (that she foolishly followed) to a fake website and how she might avoid being disconnected by updating her account. They followed this up with a call from a man claiming to be from the online Bank Revolut affecting concern that there had been activity on her account and offering his help to recover the cash from the apparent scammers. He got her to authorize payments in the supposed aim of recovering the supposed money that had been withdrawn. Half way through she started to wonder "who is real here?" She lost some and saved some. A lot of money,people
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How does a physical system evolve under acceleration?
If we had a snail's pace (with no extra acceleration or deceleration) the difference in the clocks would be similar or identical but ,as an example it could be a billion years as against a billion and one years , depending on a great distance and a slow speed.Make sense? It only stands out as remarkable when the speeds are relativistic.
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How does a physical system evolve under acceleration?
I was going to argue my point further but I now see that the ship could also be traveling at a snail's pace over a longer time and we would get the same time dilated result. Correct? What difference ,I now wonder if any would it make if the ship was to add acceleration to its velocity? Would that increase the time dilation? I mean its average velocity was the same but it kept accelerating and decelerating linearly all the time.. Would it just make the velocity picture more detailed(the ship travels further)?
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How does a physical system evolve under acceleration?
Sorry ,didn't see your post. Well I had been thinking about the twins but I was interested generally in an accelersted system ,biological or mechanical. I was thinking how ,in a rocket that was accelerating a beam of light would ,to a person on board to bend. And so it seemed to me that ,since all(I think) interactions between objects inside the rocket would depend upon the em forces then those forces would similarly be bent. So I was wondering if the distortion of the em field inside the accelerating rocket might be responsible for time slowing as compared to the unaccelerated frame of reference of the stay at home twin (not on Earth but somewhere really unaccelerated like ,as per your example in the ISS as a close approximation) If light is curved in an accelerated frame would that have a bearing on the way that objects inside that accelerated frame interact with each other? If they interact less with each other that would mean that they (ie the system as a whole)age less,mightn't it? Am I wrong to see a connection between em radiation and the forces that cause interactions between objects(it would hardly be the first time I have been wrong in our discussions!)
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How does a physical system evolve under acceleration?
I was interested in a possible mechanism whereby this could be observed(or , rather modeled in real time.) An observer in the rest frame against which the acceleration takes place only interacts when the accelerated body and it "share the same event" or perhaps is close enough for a signal to be sent and returned. And any observer in the accelerated frame will see the time involved in any interactions as the proverbial "one second per second". What about my musing in the OP that the interactions in any system under acceleration will(unobservably) be altered in regards to the time between them because the em radiation involved in interactions (I think) travels in a curved path and is affected by blue /red shift? I think I am trying to see what actually happens(or should happen) without it being possible to verify by real time measurements. When the twins separate ,they could do so from a nonaccelerating point in space and time. Have I replied appropriately to your post?
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How does a physical system evolve under acceleration?
Full disclaimer :I have be thinking about those twins... When the accelerated twin speeds off his internal system must evolve (as does the watch in the cabin) When they are actually under acceleration is there (in their own frame of reference) any change in the perceived passage of time ? None because the perceiver is accelerating at the same rate as the watch? What about the "view" from the the unaccelerated frame of reference of the other twin? It cannot see but can it deduce that em signals (within the cabin)are being red shifted in one direction and blueshifted in the other? Would that have the effect of slowing down all interactions between all parts of the physical system? If so ,would it be of any consequence that particular interactions were mediated by blueshifted signals rather than red? Is the red/blue shift aspect just part of the overall curvature of the light (and em) signals in the cabin?
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Why use the atomic bomb on Japan?
Because ,with nuclear weapons you cannot kill your opponent without also killing yourself and anyone you care about first(or in the hours to follow) The lucky ones will be those who are killed off most quickly. Morality meets expediency
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Do all emotions have a name (potentially?
Interesting.Sadly (or maybe fortunately) I no longer have the intellectual capacity to investigate those questions.I am more or less just fascinated ,for now to learn that that line of enquiry exists .(and prepared to eavesdrop on others who can discuss the subject profitably)
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Do all emotions have a name (potentially?
Actually no.It was curious abdominal discomfort with a feeling of loss of autonomy due to semi obsessively following routine behaviour I also felt like stopping but that would have meant a bit of extra washing up. Kind of a fascistic side to me à table As a side note ,if there are so many possible emotional combinations, sophisticated AI robots will soon be making us all look like emotional retards and sexual infidelity with the mechanical sex will be rampant as who wants to live with a dolt? Not far off but it could have been any stodgy food.Potatoes would just be an examplar. maybe we could refer to it as "the goose's gullet". or "Le chagrin des oies gavés" I bet it was those gluttonous Belgians after all.
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Do all emotions have a name (potentially?
Don't know why I thought emotions came in packages.Therein lay my confusion. Maybe that is related to my self assessment as a literalist -or maybe I just don't have the patience to think things through.(unlike my dinner plates) (I know what you mean about the Icelanders- I wonder what is the culture most centred around gastronomy and introspection-I don't think the French would have that kind of vocabulary-maybe the Belgians? )
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Do all emotions have a name (potentially?
Are they distinct or do they bleed into one another? The thought occurred to me as I was finishing my meal and my plate was almost ,but not quite empty. I have the habit of nearly always finishing what is on the plate and yet ,in this case I had had enough but still did not want to leave the plate unfinished. So ,I plucked up the remaining half of a baked potato and continued remorselessly to put it into my mouth and chew it even though I took no physical pleasure from the action. I could feel with every swallow that I was increasing my over satiety. What,I wonder now was that feeling? I can't remember having had it before. I was kind of doing something in spite of my inner wishes but nobody was forcing it but myself. Is that a confluence of indistinct emotions ?Does it have or can it be given a name? Is it a kind of emotional syndrome? For my next treatise ,I am reserving the title of "Remembrance of Appetites Past"
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Why Lorentz relativity is true and Einstein relativity is false
This is clearly right as it has been shown experimentally. Do you have any other (or complementary) intuitive ways of sitting this process in our pattern of thoughts? I have always tried to think of this as some kind of "work done" as a body travels through both space and time, following different possible paths but that approach doesn't satisfy me (and is probably wrong as well) I find no fault with your description but I wonder could there be other ways to describe this using words.
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The Official JOKES SECTION :)
If only the same could be said of ticks(on the bell end).
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The spacetime interval versus a chain of causative events
Is the "medium" of free space the radiation itself? Those coefficients apply to em radiation: Are there forms of radiation that apply to other fields (as per the fields in QFT)? Eg does the strong force radiate?
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War Games: Russia Takes Ukraine, China Takes Taiwan. US Response?
Can I just pick you up on that point? I didn't think that Russia (you mean the regime ruling Russia now?) claimed to be Communists. Not that I care very much what they claim to be ,as (a) actions speak louder and (b) lying is what they are best at. Just surprised you might think that. Regarding "fascism" it seems to me that what we have in Russia and possibly emerging in USA may actually be worse than the fascism as practiced in the 20th century. (Not quite sure if it was just Italy that calledcutself fascist or whether Spain shared the same,or similar ideology)
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The spacetime interval versus a chain of causative events
Is there such a thing as "empty space"? If "it" is permeable or permittive then it has a property/properties . Can anything with properties be considered "empty"? And if it is permeable/permittive then does that mean it it "permeated"? -(with radiation?)
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The spacetime interval versus a chain of causative events
Is that a bit of "back engineering" Was it Minkowski who arranged the axes so that they all had the same units of spatial distance? Was he just trying to convert time to spatial distance or did be have in mind (as I always thought was implied) that ct was the distance traveled by light in the units of time chosen by the timepiece? If it was him,did he explain his reasoning at the time?(not that we would need to respect his intentions ,necessarily if the model speaks for itself-I have read that Einstein didn't approve at first) Would the model work as well if c was replaced with an arbitrary speed such as ,for no particular reason the speed of the earth around the Sun ?
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The spacetime interval versus a chain of causative events
Might it be that the quantative difference between the overall spacetime interval and the integral of the causative chain of events is the aging and spatial displacements of the sword? If the sword was a smaller system (and followed a geodesic?) would the difference be less? Also is entropy another description of aging? edit ,am I just repeating what @md65536 posted a little above
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The spacetime interval versus a chain of causative events
Are they related?Can they be the same under any particular conditions? If the worldline of an object is integrated is the result given in the same units as the spacetime interval?(which just considers beginning and end points of the worldline,if I have that right) Edit :just saw @KJW 's response.Probably too late to answer him today...