Russia Defence Forum

Would you like to react to this message? Create an account in a few clicks or log in to continue.

Military Forum for Russian and Global Defence Issues


+18
starman
Regular
magnumcromagnon
dino00
Aristide
Walther von Oldenburg
flamming_python
GarryB
GunshipDemocracy
LMFS
Viktor
nomadski
jhelb
George1
Morpheus Eberhardt
victor1985
Werewolf
kvs
22 posters

    Physics General Subjects Thread

    kvs
    kvs


    Posts : 13005
    Points : 13152
    Join date : 2014-09-10
    Location : Kanada

    Physics General Subjects Thread - Page 6 Empty Re: Physics General Subjects Thread

    Post  kvs Fri Mar 25, 2022 10:12 am



    Cosmology is a quack "science". It never crossed their minds that the Earth could emit microwaves from an apparent 3 Kelvin
    temperature source. Clown ignorance and assumptions are not knowledge. Ego tripping clowns who ram their ignorant
    BS down everyone's throats are some of the worst human garbage out there.

    kvs
    kvs


    Posts : 13005
    Points : 13152
    Join date : 2014-09-10
    Location : Kanada

    Physics General Subjects Thread - Page 6 Empty Re: Physics General Subjects Thread

    Post  kvs Sun May 29, 2022 11:51 pm

    Recall the overhyped "image" of the M87 "black hole". Well, it turns out to be image processing garbage.

    https://arxiv.org/pdf/2205.04623.pdf

    The above article shows what is involved with image processing of the actual data. The "black hole" ring is
    an artifact of sloppy image processing.

    Science by press release and media hype is not science. But it is effective at establishing dogma.

    nomadski and LMFS like this post

    nomadski
    nomadski


    Posts : 1899
    Points : 1909
    Join date : 2017-01-02

    Physics General Subjects Thread - Page 6 Empty Re: Physics General Subjects Thread

    Post  nomadski Sat Jun 04, 2022 5:24 am

    https://www.futilitycloset.com/2011/08/22/the-arrow-paradox/



    This movement can be explained ? By quantum mechanics ? Time divisible to a point , where an object exists in two places at the same time . Here and there . Now and later ? Does this mean , space/ time is particulate , with discrete points of being and not - being , where an object exists at two points , temporarily ? Means , jump from point to point takes no time , movement takes place in the past and future and present .
    kvs
    kvs


    Posts : 13005
    Points : 13152
    Join date : 2014-09-10
    Location : Kanada

    Physics General Subjects Thread - Page 6 Empty Re: Physics General Subjects Thread

    Post  kvs Sat Jun 04, 2022 10:03 am

    nomadski wrote:https://www.futilitycloset.com/2011/08/22/the-arrow-paradox/



    This movement can be explained ? By quantum mechanics ? Time divisible to a point , where an object exists in two places at the same time . Here and there . Now and later ? Does this mean , space/ time is particulate , with discrete points of being and not - being , where an object exists at two points , temporarily ? Means , jump from point to point takes no time , movement takes place in the past and future and present .

    Aristotle loved to claim that philosophy can "reason out" the universe while the philosopher is sitting on some stone.    This is delusional nonsense.    Reality is
    more vast than any brain neuron pattern can generate and cannot be derived from a few postulates.   Even mathematics fails to achieve this simplicity.  

    An example of the BS tendency of humans to impose their bias on physics is GR and worldlines.  We are supposed to accept that all entities exist on some
    time dimension where all of their past and future instances exist at the same "time".    So time travel is just traipsing back and forth on this fancied time dimension.
    This, naturally, is ignorant desire in the guise of deep analysis.   Traipsing on a hypothetical time dimension automatically requires a 5th degree of freedom.   You
    started with three spatial dimensions and then because you thought you were real smart, your desire for a 4th dimension which you call time, you ended up with
    five dimensions.   Following your own peasant fantasy "logic", you will try to claim that the 5th degree of freedom is a 5th dimension, so then you are implicitly
    generating a 6th degree of freedom and so on to absurdity.  

    There is no time dimension.   The past and the future do not exist.   The only thing that exists is the "now".   It may be fuzzy in the quantum mechanical sense that
    multiple realizations of the "now" are possible with some probability weighting.   But there is no traipsing possible on some ad hoc time "dimension".   It is more
    physically justified to assert that motion is a more fundamental property than time.   Time is just a construct which emerges from motion and is nothing more than
    a label for it.   This applies to all processes including particle decay.   All physical entities are themselves composed of photons or photon type particles that move
    even if they are trapped in a locality.   The most fundamental clock is a photon bouncing between two ideal mirrors.  

    Time dilation inside a gravitational well is nothing more than the photon bouncing between the mirrors taking longer to do so.   An absolute universal time is well
    defined even if relativist subjectivists don't like it.   A real theory of gravity has to start from understanding of its particle level interactions.   Not from equivalence
    principles and other simplistic hypotheses.   GR is just a recast of the Newton's Theory of Gravity since it has nothing to say about the force law.   Even if the force
    is transmuted into geometry, it still requires an external formulation which GR does not provide.   The equivalence principle supplies no information of the form:

    GMm/r^2

    Einstein's GR does not provide us with G.   Is the exponent of the radius, r, 2 or some other number?   MOND says that on large scales it is not exactly 2 and MOND
    can resolve the galaxy rotation curve problem without appealing to magical dark matter.   Again, it makes more sense that photons (and thus all matter) interact with
    gravitons (something that does not exist in GR and GR cannot be quantized since there is no gravitational field but instead some space-time metric).    Gravity is thus
    a fundamentally nonlinear theory since gravitons must interact with themselves.  The MOND power law exponent deviation from 2 is precisely this nonlinearity.  

    The gravity tangent may seem a non sequitur from the original point about the existence of time, but it is BS such as worldlines that are spawned by SR and GR that
    generates nonsense about time and time travel.   The SR and GR formulations are formalisms and not fundamentals of reality.   You can take any dynamical system
    and pretend it has worldlines.   That does not mean that the past and the future coexist with the present.

    nomadski likes this post

    nomadski
    nomadski


    Posts : 1899
    Points : 1909
    Join date : 2017-01-02

    Physics General Subjects Thread - Page 6 Empty Re: Physics General Subjects Thread

    Post  nomadski Sat Jun 04, 2022 3:54 pm

    I must attempt a reply as a lay person . I followed what you said , up to a point . The moving arrow paradox does I think include a time component . Time being a record of sequence of events . And to say there is no time , is to say there is no sequence . But we know that there are sequences . Some very slow , and some fast .

    Take the example of this particle , in order to move , it can move it's front portion and keep it's rear static . But this means , it has become soft and deformed , lost it's shape . Or if can move it's rear and keep it's front static . But then it becomes infinitely  hard and inelastic or compacted . In these two cases , then it's nature changes . Or if it can move all it's sides together , in unison , and keep looking good , like catwalk model !

    So movement must take place , out of the foot - print , of it's own shape . It must at once ( instantly ) , with all it's sides and geometry , be in new location . If this movement was not instant , it would be impossible . Since it would lead to particle , being in two places at the same time . Then the mass  of this particle will increase . And change it's  beautiful shape and nature . It's qualities .

    Therefore the particle ceases to exist in one location , and appears in new location instantly . Retaining all characteristics . Objects containing a mass of particles like Arrows or Atoms , or cat walk models , travel in this way . With each indivisible particle , doing a trick , appearing and disappearing along a path . Space being like a honeycomb , where each particle , comes to rest , before moving on , on it's travels .

    The speed of the particle in space , is independent of the speed with which particles themselves materialize and dematerialize between spatial pit stops , instantly  ! That is how the Arrow moves , where it is not !

    https://m.youtube.com/watch?v=XjCW10-eRVI
    GarryB
    GarryB


    Posts : 33572
    Points : 34086
    Join date : 2010-03-30
    Location : New Zealand

    Physics General Subjects Thread - Page 6 Empty Re: Physics General Subjects Thread

    Post  GarryB Sun Jun 05, 2022 4:08 am

    Makes my head hurt...

    But I would suspect part of the problem is our understanding using examples.

    Let me give you an example... once we realised space was expanding we described it as a fabric, but obviously it is no fabric... but part of the analogy has rubbed off so people talk about rips in the fabric of what we now call space time... but is that a feature of real space time or a feature of fabric we have mistakenly attributed to space time because of our fabric analogy?

    At the time of the big bang we are told the matter of the entire known and unknown universe... all the matter and energy we can and cannot see existed in the volume smaller than an electron... that alone explains why we call it spacetime... because if it was space alone it should have created the only black hole ever to exist and everything would have fallen into the singularity created.

    We assume the enormous compression of spacetime prevented the compression of matter within what constituted the universe at that time to form the pockets of gravity needed to form anything... planets, stars, gallaxys, or the more exotic objects like black holes, but that what it did do was create expansion.

    We are told the expansion is accelerating, which suggests it started slower, but most descriptions of the big bang I have read about it goes from the size of a subatomic particle to a rather large dark volume of mostly hydrogen and helium... presumably as the volume decompresses bubbles are formed like nitrogen bubbles in a divers blood... but they now seem to think it happens on multiple scales... the smaller scale to form stars... the first of which were enormous and very short lived but presumably pushed out gases and created new elements so early on the density of spacetime was too high for these super stars to collapse into black holes... but on a larger scale other bubbles formed... bubbles of enormous groups of stars which created multiple galaxy clusters in clumps with largely empty gaps between them... one would expect that when you expand a solid and internal cavities form the physical resistance to expansion would be physical, but in our example that empty space with no gravity would expand faster than space where enormous heavy objects like stars and groups of stars are located.

    Spacetime is not a fabric and we have no reason to believe its ability to expand is limited the gaps between galaxy clusters might expand forever leading to the situation where each galaxy cluster will suffer collision after collision until all the galaxies in each cluster form a single super galaxy in each pocket, but the space between galaxies continues to expand to the point where the dots in the night sky that are not stars in our galaxy but are actually distant galaxies will fade into indiscernable blobs and the sky will darken except for all the starts in our galaxy which has already consumed two other smaller galaxy and is about to merge with the Andromeda galaxy...

    As hydrogen and helium are consumed and dust clouds collapse the things that emit light in the galaxy will fade and everything will go dark as the expansion continues forever.
    nomadski
    nomadski


    Posts : 1899
    Points : 1909
    Join date : 2017-01-02

    Physics General Subjects Thread - Page 6 Empty Re: Physics General Subjects Thread

    Post  nomadski Mon Jun 06, 2022 11:33 am

    Now mathematicians , most of them believe in the existence of zero and infinity . But these may only be ideal concepts existing in our mind . Like pink Elephants . They have said that , they found the number of particles in the universe to be a finite number . Also the number of zero , can not refer to any actual object in reality . What has no dimension or mass , simply does not exist .

    If this indivisible particle ( original Atom , in Greek philosophy ) , traverses space , through an infinite ( many ) number of points , for an interval of zero time ( short time ) then to traverse between two points A and B , would take : many x short time = long time . And speed of particles would be fixed and limited . But we see that objects travel at various speeds .

    Also particles that exist at many points , because of their different orientation and relationships , would tend to have less stable qualities . Stable qualities are important to allow the existence of predictable interactions or laws . What is not stable at the smallest interval of time , or perceived to be of predictable qualities , leads to unstable  macro- structures . Universal or local laws , then do not exist .

    Therefore the particle that traverses from point A to B , does so in a few steps , by jumping at infinite ( very high ) speed between points . And at these spatial interstitial , points , it assumes lower speed or is  static . In fact I think , in order to be perceived by other particles , that it is static , with defined and fixed qualities . Like two cyclists that stop on the road to chat as friends and exchange information .

    You mentioned your head hurting , well mine too . I do not pretend to know , I only speculate . But I neither commit intellectual Hara-Giri and sink into the depths of depression , thinking what will become of my insignificant body inside a Black Hole , a billion years from now . Nor do I , like a physics Professor , shoot down every competing idea , in order to sell my own esoteric and confabulated idea to the highest bidder ( university ) to feed my Ducks in a pond in CERN .

    Therefore in my book , infinity x zero , is non-existent . Is a mathematical concept . However , there was even a mathematician once , that proved that an infinite series of zero sums , added to one or unity ! I do not remember his name .


    https://philforhumanity.com/Zero_Times_Infinity.html


    Edit : you mentioned the theory of " fabric of space " and there is " string theory " , now if there was cooperation , then these strings could be what this fabric is made of , and every fabric has holes like my theory !

    Edit : I reply here to Garry B , in the next post , to allow other posts prominence . Saying there are zero pink Elephants , is the same as saying there are zero kids in a car . We can replaces these mental objects without physical reality with " ( ) " . And say " there are zero ( ) ! This sentence is not capable of ever being true . The mathematics that we have today is an approximation ( very approximate ) to reality . Too many zeros and we loose the mass in the universe and say " dark matter " !


    https://www.vox.com/science-and-health/2018/7/5/17500782/zero-number-math-explained



    Last edited by nomadski on Tue Jun 07, 2022 6:28 am; edited 1 time in total
    GarryB
    GarryB


    Posts : 33572
    Points : 34086
    Join date : 2010-03-30
    Location : New Zealand

    Physics General Subjects Thread - Page 6 Empty Re: Physics General Subjects Thread

    Post  GarryB Tue Jun 07, 2022 3:09 am

    Also the number of zero , can not refer to any actual object in reality . What has no dimension or mass , simply does not exist .

    Agree about the existence of infinity, but zero makes sense and is necessary... it refers most often to an absence rather than something that can be counted.

    If there are no children in your car then you can say there are zero children in your car... when you say there are zero children or whatever you are talking about in a specific place or even a general area... the point is that if there is no zero then you can't really explain not having any.

    How many times do you want your government to murder you today...

    Without zero you cannot have mathematics...

    Most of the time infinity is not relevant to any useful equations.

    nomadski likes this post


    Sponsored content


    Physics General Subjects Thread - Page 6 Empty Re: Physics General Subjects Thread

    Post  Sponsored content


      Current date/time is Sun Jul 03, 2022 1:58 am