The Fabric of Cosmos and other things

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This topic contains 248 replies, has 6 voices, and was last updated by  Mari 3 years, 10 months ago.

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  • #7360

    ulvfugl
    Keymaster

    The international system of units (SI) comprises seven base units (the metre, kilogram, second, Kelvin, ampere, mole and candela). Ideally these should be stable over time and universally reproducible. This requires definitions based on fundamental constants of nature which are the same wherever you measure them.

    The present definition of the Ampere, however, is vulnerable to drift and instability. This is not sufficient to meet the accuracy needs of present and certainly future electrical measurement. The highest global measurement authority, the Conférence Générale des Poids et Mesures, has proposed that the ampere be re-defined in terms of the electron charge.

    The frontrunner in this race to redefine the ampere is the single-electron pump (SEP). SEPs create a flow of individual electrons by shuttling them in to a quantum dot — a particle holding pen — and emitting them one at a time and at a well-defined rate. The paper published today describes how a graphene SEP has been successfully produced and characterised for the first time, and confirms its properties are extremely well suited to this application.

    http://www.sciencedaily.com/releases/2013/05/130512141212.htm

    #7363

    Mari
    Participant

    Re vacuum is not empty and the field fluctuations:
    The dimensions of the simulation “box” is about the size of two protons. And the frame rate of the simulation is 1,000,000,000,000,000,000,000,000 frames per second.
    So where are you most likely to find a quark? Well, it turns out that the quarks like to sit on top of those lumps.”

    #7476

    Mari
    Participant

    Open questions in physics

    While for the most part a FAQ covers the answers to frequently asked questions whose answers are known, in physics there are also plenty of simple and interesting questions whose answers are not known. Here we list some of these. We could have called this section Frequently Unanswered Questions, but the resulting acronym would have been rather rude.

    http://math.ucr.edu/home/baez/physics/General/open_questions.html#cosmology

    #7478

    Mari
    Participant

    I love reading physics forums.

    Question:”Could anyone explain quantum fluctuation?”

    What’s more, such quantum fluctuations in otherwise empty space are the tip of a very big iceberg that lies right at the frontier of one of the biggest white elephants sitting in the living room of modern physics. The influence of these fluctuations can be calculated using some rather mysterious yet effective mathematical approaches (called “renormalization”), resulting in successful predictions like the “Lamb shift” in the spectrum of hydrogen. So we may think of these vacuum fluctuations as “real things”, in that they have measurable consequences. However, there is a fly in the ointment (or more like a Mothra), which is that if one naively adds up the energy, however fleeting, associated with these fluctuations, the answer one comes to is infinite (by some accounts) or 120 orders of magnitude larger than anything that makes sense (by other accounts). So just underneath one of the most successful predictions of quantum electrodynamics, we have the all-time record for a wrong prediction (OK, it’s tied with the “ultraviolet catastrophe”).

    In the past, this problem was swept under the rug by imagining that some missing physics or subtle mathematics insures that this huge or infinite sum actually adds up to zero, but now with “dark energy” and the accelerating universe, a popular alternative is that it adds up to something very small but not zero. But this presents an even harder challenge: if it seemed hard to get infinity to add up to zero, it seems harder still to get it to add up to something small but nonzero! It is possible that there is some future revolution in physics awaiting the answer to this question.

    http://cosmoquest.org/forum/showthread.php?111699-Could-anyone-explain-quantum-fluctuation

    #7479

    Mari
    Participant

    Since he mentions the UV catastrophe

    http://en.wikipedia.org/wiki/Ultraviolet_catastrophe

    According to classical electromagnetism, the number of electromagnetic modes in a 3-dimensional cavity, per unit frequency, is proportional to the square of the frequency. This therefore implies that the radiated power per unit frequency should follow the Rayleigh–Jeans law, and be proportional to frequency squared. Thus, both the power at a given frequency and the total radiated power is unlimited as higher and higher frequencies are considered: this is clearly unphysical as the total radiated power of a cavity is not observed to be infinite, a point that was made independently by Einstein and by Lord Rayleigh and Sir James Jeans in the year 1905.

    #7480

    Mari
    Participant

    #7481

    Mari
    Participant

    Are we living in a black hole?

    Every black hole contains a new universe…

    Successful as it is, there are notable unsolved questions with the standard big bang theory, which suggests that the universe began as a seemingly impossible “singularity,” an infinitely small point containing an infinitely high concentration of matter, expanding in size to what we observe today. The theory of inflation, a super-fast expansion of space proposed in recent decades, fills in many important details, such as why slight lumps in the concentration of matter in the early universe coalesced into large celestial bodies such as galaxies and clusters of galaxies.
    But these theories leave major questions unresolved. For example: What started the big bang? What caused inflation to end? What is the source of the mysterious dark energy that is apparently causing the universe to speed up its expansion?
    The idea that our universe is entirely contained within a black hole provides answers to these problems and many more. It eliminates the notion of physically impossible singularities in our universe. And it draws upon two central theories in physics.

    Read more at: http://phys.org/news/2012-05-black-hole-universe-physicist-solution.html#jCp

    #7489

    Mari
    Participant

    #7506

    ulvfugl
    Keymaster

    Time Reborn means to present a program for further study. Smolin maintains a fairly puritanical view of what science should and should not do. He doesn’t like the current fashion in “multiverses”—other universes lurking in extra dimensions or branching off infinitely from our own. Science for him needs to be testable, and no one can falsify a hypothesis about a universe held to be inaccessible to ours. For that matter, any theory about the entire cosmos has a weakness. The success of science over the centuries has come in giving rules and language for describing finite, isolated systems. We can make copies of those; we can repeat experiments many times. But when we talk about the whole universe, we have just the one, and we can’t make it start over. So Smolin sees little scope for science in the family of cosmic questions beginning with “Why…”:

     Why is there something rather than nothing? I can’t imagine anything that would serve as an answer to this question, let alone an answer supported by evidence. Even religion fails here….

    Better not to think of science as a quest for timeless truths. Science, he writes, creates “effective theories.” These are models—incomplete by definition. They are effective in limited domains, and they are approximate. That doesn’t have to be a failing. Science can construct better and better theories, approaching the truth with closer approximations. But a perfect model of the universe would have to be the size of the universe. We humans are finite creatures, with little brains.

    It may seem that Smolin himself is taking on one of the grandest cosmic questions of all. He does try to restrain himself, though, to hypotheses that make testable, falsifiable predictions about the universe we can observe. The scientific case he makes is intricate, involving methods from loop quantum gravity (one of several approaches to combining quantum theory and the theory of relativity). He depicts the geometry of space as a graph with nodes and edges. He has reserved some detail for online appendices at http://www.timere born.com and plans to publish a more rigorous formulation in collaboration with the Brazilian philosopher Roberto Mangabeira Unger.

    “The world remains, always, a bundle of processes evolving in time,” says Smolin.

    Logic and mathematics capture aspects of nature, but never the whole of nature. There are aspects of the real universe that will never be representable in mathematics. One of them is that in the real world it is always some particular moment.

    In a coda he ruminates briefly on the problem of consciousness—“the really hard problem.” He doesn’t propose any answers, but I’m glad to see physicists, mathematicians, and computer scientists continuing to wrestle with it, rather than leaving it to neurologists. Whatever consciousness will turn out to be, it’s not a moving flashlight illuminating successive slices of the four-dimensional spacetime continuum. It is a dynamical system, occurring in time, evolving in time, able to absorb bits of information from the past and process them, able also to create anticipation for the future.

    http://www.nybooks.com/articles/archives/2013/jun/06/time-regained/?pagination=false

    #7562

    Mari
    Participant

    A video map of motions in the nearby universe

    An international team of researchers, including University of Hawaii at Manoa astronomer Brent Tully, has mapped the motions of structures of the nearby universe in greater detail than ever before. The maps are presented as a video, which provides a dynamic three-dimensional representation of the universe through the use of rotation, panning, and zooming. The video was announced last week at the conference “Cosmic Flows: Observations and Simulations” in Marseille, France, that honored the career and 70th birthday of Tully.
    The Cosmic Flows project has mapped visible and dark matter densities around our Milky Way galaxy up to a distance of 300 million light-years.

    http://phys.org/news/2013-06-video-motions-nearby-universe.html

    #7922

    Mari
    Participant
    #8009

    Mari
    Participant

    A lifetime is too short to understand the amazingness of it all…

    #8578

    Mari
    Participant

    I think I’m disappointed…:-(
    Loved the ET movie so much…

    Silence in the sky…
    Dr Armstrong says: ‘There are two ways of looking at our paper. The first is as a study of our future – humanity could at some point colonise the universe. The second relates to potential alien species – by showing the relative ease of crossing between galaxies, it makes the lack of evidence for other intelligent life even more puzzling. This worsens the Fermi paradox.’

    Read more at: http://phys.org/news/2013-08-silence-skybut.html#jCp

    et

    #8619

    ulvfugl
    Keymaster

    No one knows for sure, but it is not at all unlikely that the universe is constructed in a very different way than the theories and models of today predict. The most widely used model today cannot explain everything in the universe, and therefore there is a need to explore the parts of nature which the model cannot explain. This research field is called “New Physics,” and it turns our understanding of the universe upside down.

    http://www.dailygalaxy.com/my_weblog/2013/09/-news-physics-vs-standard-model-capable-of-describing-only-35-of-the-universe.html

    #8620

    ulvfugl
    Keymaster

    Geophysicists have discovered what they say is the largest single volcano on Earth, a 650-kilometre-wide beast the size of the British Isles lurking beneath the waters of the northwest Pacific Ocean.

    The megavolcano has been inactive for some 140 million years. But its very existence will help geophysicists to set limits on how much magma can be stored in Earth’s crust and pour out onto the surface. It also shows that Earth can produce volcanoes on par with Olympus Mons on Mars, which, at 625 kilometres across, was until now the biggest volcano known in the Solar System.

    http://www.nature.com/news/underwater-volcano-is-earth-s-biggest-1.13680

    #10430

    Mari
    Participant

    They look like marbles…

    earth sun

    #10431

    Mari
    Participant

    The planet marbles remind me of a song from my childhood

    #10516

    ulvfugl
    Keymaster

    There’s a quiet revolution underway in theoretical physics. For as long as the discipline has existed, physicists have been reluctant to discuss consciousness, considering it a topic for quacks and charlatans. Indeed, the mere mention of the ‘c’ word could ruin careers.

    That’s finally beginning to change thanks to a fundamentally new way of thinking about consciousness that is spreading like wildfire through the theoretical physics community. And while the problem of consciousness is far from being solved, it is finally being formulated mathematically as a set of problems that researchers can understand, explore and discuss.

    https://medium.com/the-physics-arxiv-blog/5e7ed624986d

    #11930

    Mari
    Participant
    #11934

    ulvfugl
    Keymaster

    We present a comprehensive and consistent meta theory of universes. The Universe is comprised of a long information theoretic bitstring encoding its own grammar and parser that progresses as a big evolution rather than a big bang going through a step function in a recursive fashion. The big evolution posits similar principles identified in biological evolution such as mutation and natural selection, and universes (and portions thereof) may be evaluated in terms of homology and analogy. The big evolution refers to constant dynamic equilibrium of interacting particles (bits of information) contained in a universe as specified by chaos theory [1]. The laws of complexity thus followed the laws of physics.

    http://ram.org/ramblings/science/big_evolution.html

    #12063

    Mari
    Participant

    Charming brief on de Broglie and waves…”it’s screwy”

    #12130

    Mari
    Participant

    “The most exciting phrase to hear in science, the one that heralds new discoveries, is not “Eureka!” but “That’s funny …”
    Isaac Asimov

    #12146

    ulvfugl
    Keymaster

    Max Planck

    You gave me great joy by kindly sending me your book “Phantom Walls”, and I hardly need to assert that I will gratefully keep this valuable gift in honour. Not only will it be a cherished souvenir of that eventful and interesting day which I got to spend in London two weeks ago, but by reading it I also promise myself many a new valuable stimulation in addition to the plenty which I have previously received from your writings. – The thing that for me has always made the standpoint represented by you plausible and likeable is your unshakeable faith in the existence of a real outer world independent of us, in which we humans play only a relatively humble and minor role, and your rejection of the positivist viewpoint, which seeks to do away with all questions associated with this real outer world by declaring them meaningless. Rather, we must be content that much will remain mysterious to us, no matter how much we advance in knowledge. But we always have the consolation that we steadily approach the truth, even if we can never fully attain it.

     

    http://forbiddenhistories.wordpress.com/

    #12168

    Mari
    Participant

    Alan Guth on other universes

    #12297

    Mari
    Participant

    Emergent spacetime in quantum theories of gravity

    “Although philosophy has acknowledged many implications of relativity, the physics of the past 20 years has started to elaborate revolutionary new accounts of space and time. These are quantum theories of spacetime, or (since gravity is explained by the geometry of spacetime) of “quantum gravity” (QG); string theory is most visible, but competitors exist, especially loop quantum gravity (LQG). These theories are works in progress, but one strong suggestion they make is that space and time are not fundamental ingredients of the world, but somehow arise–or “emerge”–from a deeper reality that does not contain them: much as rainbows, plants or people are “higher-level” phenomena, “effective” entities in physicists’ parlance. This idea that the universe might not, at bottom, be “in” space and time, that these seemingly fundamental ingredients are just the appearances of something more fundamental, would shatter our conception of the universe profoundly. But because the physics is controversial and difficult, despite its critical nature the issue has not yet been investigated in a serious way by philosophers (there are only a handful of papers addressing the issues). However, in the last few years the field has reached a maturity at which such work is possible, indeed urgent;”

    http://philosophyfaculty.ucsd.edu/faculty/wuthrich/research/emergentspacetime.html

     

    spacetime

    #12298

    Mari
    Participant

    A photon, massless,  travelling at the speed of light, experiences no time and no space. Space and time seem to appear when things slow down from light speed. What could limit the speed? Mass? Could mass cause emergence of spacetime? Mass at least warps spacetime, could it also be the cause of it?

    What is space, distance, volume then? Something that is forced into existence because things cannot keep up with light? Tension between light and mass? But light is energy, and mass is energy… so is it tension between mass-energy and massless energy?

    … must think more…

    #12300

    ulvfugl
    Keymaster

    I posted this some weeks ago

    Time is an emergent phenomenon that is a side effect of quantum entanglement, say physicists. And they have the first experimental results to prove it

    https://medium.com/the-physics-arxiv-blog/d5d3dc850933

    #12530

    gavint
    Participant

    http://armageddonconspiracy.co.uk/  :

    “Gnosticism asserts that the world is under the control of the Demiurge and his archons (the Devil and his demons). We live in hell. What could be worse than being ruled by psychopaths who will do anything to serve their own agenda? All right wingers are Satanic. All conservatives, all those who support the dynastic family, inheritance, nepotism, privilege, cronyism and “libertarianism” are psychopaths. You are psychopathic if you are opposed to the rational, meritocratic State. Reason alone is the solution to humanity’s ills. Reason is the antidote to psychopathy.”

    http://climateofsophistry.com/2014/02/22/feelings-and-illuminism/#comments  :

    “Illuminism contains all of science because science is based on mathematics, but then goes beyond science because science doesn’t even recognize or admit that it is based on mathematics (and it is), and science can’t even explain itself. Science can’t even explain something as simple as where the laws of physics are stored; mathematical idealism can. Science can’t explain free-will; mathematical idealism can. Science can’t explain why something came from nothing; mathematical idealism can. The list just goes on and on. Modern science is actually a faith system even more irrational than Abrahamism.”

    “In the Relativity post and in this one the basic justification for the concept of God was given. If you didn’t catch it then it would be helpful to do some reading. Start with the God Series by Hockney, starting with The God Factory.

    Keep in mind, as in the quote above, that this is not some childish moronic stupid and absurd faith-based God as in Abrahamism and traditional religion. Not a God you externalize and have to worship or be less-than, etc., not some creator that you have to give thanks to, etc etc. In the simplest terms then, what is evolution capable of producing? Of course the standard materialist answer to that is itself based on faith; the mathematical idealist answer is a complete revaluation, based on logic, not on assumptions or faith.”

    Most of the God Series is available for free on the AC website; the books are best read in order of publication date. A mathematical Theory of Everything is explained.

    http://www.amazon.com/Michael-Faust/e/B004LXBBUA/ref=ntt_aut_sim_2_1

    http://www.amazon.com/Adam-Weishaupt/e/B004LXB8GW/ref=ntt_aut_sim_2_1

    http://www.amazon.com/Mike-Hockney/e/B004KHR7DC/ref=ntt_aut_sim_1_1

    http://www.amazon.com/Origin-Consciousness-Breakdown-Bicameral-Mind-ebook/dp/B009MBTRHA/ref=la_B000AP5EX8_1_1?s=books&ie=UTF8&qid=1399186919&sr=1-1   :

    “Absolutely a great book. It explains everything: religion, culture, language. The parts about the anatomy of the brain are probably obsolete due to improved brain scanning equipment today. But Jaynes hypothesis of how civilization and the way we live affect our thinking is enlightening and instructive. He explains how mankind’s consciousness altered with the change from hunting/gathering to agricultural societies. He doesn’t cover it in the book but he lays the groundwork in my mind for how the industrial revolution and large cities have changed us in the nineteenth century and raises speculation on how the information age and globalization is affecting our brains now. Definitely a ground breaking work.”

    http://mathmonism.com/index.html  :

    “Existence is based on monism, not dualism, because there is no sufficient reason why existence should produce an arbitrary number of incompatible substances. If it generated such substances, it would generate an infinite number, not just two. In fact, what existence does is generate infinite instances of one substance. That one substance MUST contain, at least in elementary form, every property that will be exhibited in the universe.”

    #12532

    ulvfugl
    Keymaster

    Hi Gavin and thanks for posting that.

    I’m not going to spend much time on the first, other than to say I think it’s nonsense. I think you posted it before.

     

    Jaynes is much more interesting and although I’ve often seen mentioned and read reviews and comments I’ve not read the book. I’m very interested in investigating that whole area, pre-historic consciousness.

    The next one looks good too, because if science had followed instead of Descartes and Newton, things might have turned out rather differently. I’ve bookmarked that one to read.

    #12539

    gavint
    Participant

    Ulvfugl,

    You’ll have to read the whole series of books, the mathmonism link comes *from* the ToE of the Illuminati and it’s based on intuitive thinking, logic and reason. It all connects up and the mathmonism site is newer, the God Series books are the best of it all. There is for example a criticism of mainstream science which is very interesting.. similarly a psychological profiling of Anonymous.. it’s written exactly for people who think like me, who question everything. I appreciate it is yet more information that could potentially be garbage to you. I’ve had a year to reflect on this.

    Yes, funnily enough I know exactly what you mean by “things might have turned out rather differently” through history, because it has been explicitly explained to me in these books. There are many shocks and surprises waiting for the patient reader. I cannot recommend anything more, there’s really nothing like it. From my best judgements this is the sole thing I would recommend to people, for everything. They have thought everything through. They mention Nietzsche, Leibniz, Pythagoras, Plato, Aristotle.. it’s been such a thrilling read.

    I will leave it at that.

    I got the other unrelated book from here:
    https://www.google.com/search?q=jaynes+origin+of+consciousness+pdf

    Just found a good collection of Russel Brand clips
    https://www.youtube.com/watch?v=tT47AIi9rpY

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