Professor NanoScience
Professor NanoScience
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Quantum entanglement; exposing its key features
Imagine a connection so profound that two particles, light-years apart, can instantaneously influence each other. This is quantum entanglement-a cornerstone of quantum computing and a window into the fundamental workings of the universe. In this video, I'd like to share with you what I believe is the most intuitive way to understand quantum entanglement, drawing upon the deepest and most insightful ideas from Albert Einstein, Erwin Schrödinger, Brian Greene, John Preskill, and Leonard Susskind. We will discuss the notion of the privileged measurement axis, and how this is lost in maximally entangled qubits. We discuss how entanglement differs from classical correlations. We discuss how entanglement is when the qubits loses its individuality, the concept of separability. We also discuss how entanglement is lost in statistical mixture of Bell states.
มุมมอง: 251

วีดีโอ

Discovering Lorentz transformation with Albert Einstein
มุมมอง 12K2 หลายเดือนก่อน
This is a story about Lorentz transformation and its geometry from the perspective of Albert Einstein and Hermann Minkowski, with insights from Leonard Susskind and Brian Greene. In this video, I shall prove to you with simple arguments, the form of the Lorentz transformation, which one can derives just by assuming that the speed of light is the same across all inertial frames of reference. In ...
Why are Maxwell equations written in terms of curl and divergence? An intuitive framework
มุมมอง 2.5K8 หลายเดือนก่อน
Heaviside’s version of the Maxwell equation helps express the electromagnetic fields in a more understandable form, through the divergences and curls of the electric and magnetic fields. However, it took 20 years for the invention of vector calculus for the original 12 Maxwell equations to transform into the modern version with only 4 Maxwell equations. The fundamental theorem of vector calculu...
What makes a vector field? An intuitive understanding of its constituents.
มุมมอง 1.6K8 หลายเดือนก่อน
We will show how an arbitrary vector field can deconstruct into its constituents, namely the gradient, curl and harmonic fields. These fields are expressed in terms of the potential and vector potentials. These potentials, in conjunction with their Poisson equations and respective source terms allowed for an intuitive way of understanding these fields. The harmonic field arises as the solution ...
Derive Coulomb's law from Maxwell equations... [Concepts Challenge]
มุมมอง 1.4K9 หลายเดือนก่อน
Concepts Challenge: Show Coulomb's law from Maxwell equations. Check out "Concepts Challenge" playlist for more!
Derive Biot Savart's law from Maxwell equations... [Concepts Challenge]
มุมมอง 2K9 หลายเดือนก่อน
Concepts Challenge: Show Biot Savart's law from Maxwell equations. Check out "Concepts Challenge" playlist for more !
Divergence of curl is zero! An intuitive explanation
มุมมอง 2.7K9 หลายเดือนก่อน
This video explains why the divergence of the curl of a vector field is always zero, in the most intuitive way possible. This discussion will make contact with Stokes and Gauss theorems, and the analogy with electromagnetism.
The curl of gradient is zero! Two intuitive explanations
มุมมอง 2.2K9 หลายเดือนก่อน
This video explains why the curl of gradient is always zero, in the most intuitive way possible. This discussion will make contact with conservative fields, sinks and sources, Stokes and Gauss theorems, and analogies with electromagnetism.
Discovering the relativistic Dirac equation with Paul Dirac and graphene
มุมมอง 41K9 หลายเดือนก่อน
Einstein's special relativity, introduced in 1905, completely revolutionized our understanding of space and time. It requires that the laws of physics are invariant under Lorentz transformations, and that time and space are relative and treated on equal footing. Einstein’s special theory of relativity has been confirmed in many experiments, including the observations of time dilation by differe...
Quantum orbital angular momentum
มุมมอง 4.5K10 หลายเดือนก่อน
Angular momentum is an important physical quantity because it is a conserved quantity. For a point mass, it is classically defined as the cross product between its position vector with its linear momentum. First, we derive the basic commutation relations between the different angular momentum components, and that of the total angular momentum. We then discuss compatible versus incompatible obse...
Discovering classical angular motion with Richard Feynman
มุมมอง 2.5K10 หลายเดือนก่อน
Richard Feynman has an excellent treatment of classical angular motion in his lectures on physics. In this video, we outline his lines of reasonings, but sprinkled with many real-life phenomena to illustrate concepts such as the conservation of angular momentum, precession, torque, moment of inertia, rotational kinetic energy, and sometimes mind twisting observations such as the centrifugal, Co...
How an electron binds two protons, the hydrogen molecule ion
มุมมอง 1.9K11 หลายเดือนก่อน
The stability of the hydrogen atom cannot be explained by classical physics, and it is the search for an answer to this question that gives birth to quantum mechanics. In this video, we consider what happens if we bring a proton close to the hydrogen atom. Quantum mechanics admits a solution where it is energetically more favorable for the electron to binds the two protons. We delve into the so...
The map of semiconductor materials
มุมมอง 2.9K11 หลายเดือนก่อน
Semiconductors is currently at the heart of the worldwide rise in technological nationalism and cold war. Projected to be a trillion-dollar market by 2030, they are key to all solid-state devices which underpins the modern day and future economy. So, what is a semiconductor? How does discrete energy orbitals in atoms hybridize to form continuum conduction and valence bands in semiconductors? Wh...
Deriving Kramers Kronig relation and Hilbert transform pair
มุมมอง 2.3K11 หลายเดือนก่อน
Kramers-Kronig and Hilbert transform relations are fundamental mathematical relations that establish a fundamental connection between the real and imaginary parts of a complex response function, such as the refractive index or dielectric constant of a material as a function of frequency. We explain what is a linear, time invariant, causal system, and why the generalized response function is ana...
Response of linear, causal, time invariant system: Convolution, impulse response, Fourier transform
มุมมอง 45211 หลายเดือนก่อน
Many physical systems in real life can be described by a linear, causal and time invariant model, such as mechanical, audio, and electrical systems. We discuss the governing equations for such a linear, causal and time invariant system, which relates the input and output functions in the time and frequency domain. We discuss the physical intuition why the time domain output response is describe...
Physics of the nanoscale transistor
มุมมอง 90411 หลายเดือนก่อน
Physics of the nanoscale transistor
Spatial vs momentum translation operators in quantum mechanics
มุมมอง 1.3Kปีที่แล้ว
Spatial vs momentum translation operators in quantum mechanics
What is keeping Moore’s law alive?
มุมมอง 1.2Kปีที่แล้ว
What is keeping Moore’s law alive?
Solving the quantum harmonic oscillator with ladder operators
มุมมอง 12Kปีที่แล้ว
Solving the quantum harmonic oscillator with ladder operators
How to trap ions for quantum computing?
มุมมอง 6Kปีที่แล้ว
How to trap ions for quantum computing?
Two and three qubits quantum gates
มุมมอง 10Kปีที่แล้ว
Two and three qubits quantum gates
Single qubit and its logic gates
มุมมอง 23Kปีที่แล้ว
Single qubit and its logic gates
Mapping the qubit state onto the Bloch Sphere
มุมมอง 12Kปีที่แล้ว
Mapping the qubit state onto the Bloch Sphere
Magnetization switching through spin transfer torque
มุมมอง 3.7Kปีที่แล้ว
Magnetization switching through spin transfer torque
Magnetization dynamics and the Landau-Lifshitz-Gilbert equation
มุมมอง 4Kปีที่แล้ว
Magnetization dynamics and the Landau-Lifshitz-Gilbert equation
Theory of the tunneling magnetoresistance
มุมมอง 2.9Kปีที่แล้ว
Theory of the tunneling magnetoresistance
Spintronics memories devices, how are information stored?
มุมมอง 2.9Kปีที่แล้ว
Spintronics memories devices, how are information stored?
Two qubit state: Separable vs Entangled vs Bell states
มุมมอง 7Kปีที่แล้ว
Two qubit state: Separable vs Entangled vs Bell states
Fourier vs Heisenberg uncertainty principle
มุมมอง 1.9Kปีที่แล้ว
Fourier vs Heisenberg uncertainty principle
Deriving the Heisenberg uncertainty principle
มุมมอง 2.9Kปีที่แล้ว
Deriving the Heisenberg uncertainty principle

ความคิดเห็น

  • @gauravkamath9569
    @gauravkamath9569 วันที่ผ่านมา

    at 11:14 how did you get from step 1 to step 2?

  • @NEWDAWNrealizingself
    @NEWDAWNrealizingself 6 วันที่ผ่านมา

    THANKS !

  • @qualquan
    @qualquan 6 วันที่ผ่านมา

    requires matrix math

  • @stephenstone5700
    @stephenstone5700 10 วันที่ผ่านมา

    Damnit please don't use AI to read your scripts. It makes you look cheap and sleazy.

  • @robink99
    @robink99 16 วันที่ผ่านมา

    3:33, there is a small mistake, where wave eq. φ_sR should be φ_s0. And thank you for the valuable video!

  • @saulberardo5826
    @saulberardo5826 17 วันที่ผ่านมา

  • @saulberardo5826
    @saulberardo5826 17 วันที่ผ่านมา

    Awesome ❤

  • @lumberjack0101
    @lumberjack0101 20 วันที่ผ่านมา

    what if the system is nondegeneracy? then mi is always 1, what to go next?

    • @professornanoscience
      @professornanoscience 19 วันที่ผ่านมา

      The derivation here is general, so it also applies to nondegenerate system

  • @willemesterhuyse2547
    @willemesterhuyse2547 23 วันที่ผ่านมา

    Timestep 2:28: I saw the same picture but with the magnetic field at a maximum when the electric field is zero. I can see that as such the fields support each other, but you can't see this with that picture where bot fields are zero at the same time.

  • @EdVidService
    @EdVidService 24 วันที่ผ่านมา

    The Phi and Theta should be corrected. You wrote them upsidedown

  • @clovissimard3099
    @clovissimard3099 26 วันที่ผ่านมา

    STRUCTURE FINE DE L'UNIVERS À LA LIMITE DE L'INCONSCIENT. La constante de structure fine se place à la limite entre relativité, physique quantique et électromagnétisme. En particulier, elle caractérise la force des interactions entre lumière et matière telles que définies par la théorie de l'électrodynamique quantique.

  • @spiridonnspiridonn4596
    @spiridonnspiridonn4596 26 วันที่ผ่านมา

    На мой арифметически простой взгляд, Сфера Блоха - это *не* физический объект. Можно сказать, что это условное вспомогательное мнемоническое представление о характере взаимодействия физических объектов. Природа не оперирует подобными трансцендентными представлениями. Поэтому на их основе невозможно строить логически правильные умозаключения о практической реализации этих представлений. 08.09.2024.

    • @spiridonnspiridonn4596
      @spiridonnspiridonn4596 21 วันที่ผ่านมา

      На интуитивном уровне предполагаю, что Природа оперирует квантовыми процессами в первую очередь в соответствии с симметричными кристаллографическими соотношениями. 13.09.2024.

    • @spiridonnspiridonn4596
      @spiridonnspiridonn4596 8 วันที่ผ่านมา

      Интересно, чт0, глядя на Сферу Блоха, рассказывает продвинутый Искусственный Интеллект (AI) о технической и технологической возможности / невозможности создания полноценно работающего квантового компьютера? 26.09.2024.

    • @bailahie4235
      @bailahie4235 2 วันที่ผ่านมา

      Bloch spheres are just a mathematical structure that is "isomorphic" to parts of quantitative physical reality. That doesn't mean that the mathematical description is actually present in physical reality. But that holds for *all* mathematical models of physical reality, not only for Bloch spheres. Take Complex Hilbert spaces, which are used in quantum mechanics. Physical reality, however, does not necessarily "know" about Hilbert Spaces... It is that von Neumann came along and saw a correspondence. We could have developed other equivalent mathematical representations of QM with the same predictive power, and possibly would have, if von Neumann and Hilbert wouldn't have come along... Same holds in fact for all mathematical models of physical reality, including Newtonian classical mechanics. There is no "F", "m" or "a" out there in nature. But it is a good predictive model when interpreted as prescribed (to wit "a" has to be mapped to a particular type of physical measurement that we call "acceleration", etc.). For each model, there are infinitely many equivalent models in the sense they have the same predictive power. Newton, von Neumann, Bloch just chose some nice ones among the many... At least - nice ones for certain purposes. E.g. consiness of description, or intuitive feel for the average human, such as Bloch spheres which lean on 3D intuition of humans, etc. Other representations may be efficient for other purposes.

    • @spiridonnspiridonn4596
      @spiridonnspiridonn4596 วันที่ผ่านมา

      @@bailahie4235 Исследователям квантовых явлений желаю практических успехов в физической реализации их квантовых представлений. 03.10.2024.

    • @spiridonnspiridonn4596
      @spiridonnspiridonn4596 วันที่ผ่านมา

      @@bailahie4235 Исследователям квантовых явлений желаю практических успехов в физической реализации их квантовых представлений. 03.10.2024.

  • @juniorcyans2988
    @juniorcyans2988 28 วันที่ผ่านมา

    8:22, for t_2, the a_12 should be -i?

  • @HumphreyFrederic-o6k
    @HumphreyFrederic-o6k 28 วันที่ผ่านมา

    Weber Overpass

  • @HarveyAnnabelle-h7h
    @HarveyAnnabelle-h7h 28 วันที่ผ่านมา

    Bode Run

  • @CliffSedge-nu5fv
    @CliffSedge-nu5fv หลายเดือนก่อน

    I love pausing to inspect the mathematics when the robot voice tells me to.

  • @VictorHugo-xn9jz
    @VictorHugo-xn9jz หลายเดือนก่อน

    sc-ah-ler field. I like how you speak

  • @andyeverett1957
    @andyeverett1957 หลายเดือนก่อน

    The picture @ 57 helps understand the formula with a concrete example. Thanks for your work.

  • @jonathanlister5644
    @jonathanlister5644 หลายเดือนก่อน

    The Brains are ready Professor...

  • @victoralfonsotzakum5777
    @victoralfonsotzakum5777 หลายเดือนก่อน

    Perfect!!!

  • @alihejazi4276
    @alihejazi4276 หลายเดือนก่อน

    You deserve the best❤️

  • @think-islam-channel
    @think-islam-channel หลายเดือนก่อน

    Dirac on God: In 1971, at a conference meeting, Dirac expressed his views on the existence of God.[93] Dirac explained that the existence of God could be justified only if an improbable event were to have taken place in the past: It could be that it is extremely difficult to start life. It might be that it is so difficult to start a life that it has happened only once among all the planets... Let us consider, just as a conjecture, that the chance of life starting when we have got suitable physical conditions is 10−100. I don't have any logical reason for proposing this figure, I just want you to consider it as a possibility. Under those conditions ... it is almost certain that life would not have started. And I feel that under those conditions it will be necessary to assume the existence of a god to start off life. I would like, therefore, to set up this connection between the existence of a god and the physical laws: if physical laws are such that to start off life involves an excessively small chance so that it will not be reasonable to suppose that life would have started just by blind chance, then there must be a god, and such a god would probably be showing his influence in the quantum jumps which are taking place later on. On the other hand, if life can start very easily and does not need any divine influence, then I will say that there is no god

  • @AnthonyVaz-io2jv
    @AnthonyVaz-io2jv หลายเดือนก่อน

    Is there a way to derive the Schrödinger equation from Lagrangian dynamics by an expression for kinetic and potential energy? If this is explained in a textbook, please give me a reference. Your videos are excellent. I would like to learn more about this topic. Thank you!

  • @LEMEGETON-l3d
    @LEMEGETON-l3d หลายเดือนก่อน

    †🐦‍🔥† HELL.CERN AI

  • @ИванИваныч-б3и
    @ИванИваныч-б3и หลายเดือนก่อน

    Good!

  • @NA-ud6qm
    @NA-ud6qm หลายเดือนก่อน

    What is the discord link?

  • @r2k314
    @r2k314 2 หลายเดือนก่อน

    good examples.

  • @The_Real_Goodboy_Link
    @The_Real_Goodboy_Link 2 หลายเดือนก่อน

    Now apply to a traveling salesman combinatorial problem and constrain yourself to using a singular qubit

  • @张笑颜-w3u
    @张笑颜-w3u 2 หลายเดือนก่อน

    Great explanation! Love from Sinagpore

  • @Mohamadibra21
    @Mohamadibra21 2 หลายเดือนก่อน

    I would like the code to the diagonalization of the matrix

    • @professornanoscience
      @professornanoscience 2 หลายเดือนก่อน

      sure, will add to the description soon

    • @professornanoscience
      @professornanoscience 2 หลายเดือนก่อน

      done, check out the description

    • @Mohamadibra21
      @Mohamadibra21 2 หลายเดือนก่อน

      @@professornanoscience many thanks!!

  • @SampleroftheMultiverse
    @SampleroftheMultiverse 2 หลายเดือนก่อน

    12:36

  • @SampleroftheMultiverse
    @SampleroftheMultiverse 2 หลายเดือนก่อน

    For those That prefer a mechanical analog you can look at harmonics of a guitar string and such. The video I present is another mechanical method of quantizing a system. It is one of two methods where structures can actually be produced. th-cam.com/video/wrBsqiE0vG4/w-d-xo.htmlsi=waT8lY2iX-wJdjO3 Area under a curve is often equivalent to energy. Buckling of an otherwise flat field shows a very rapid growth of this area. If my model applies, it may show how the universe’s energy naturally developed from the inherent behavior of fields. Under the right conditions, the quantization of a field is easily produced. The ground state energy is induced via Euler’s contain column analysis. Containing the column must come in to play before over buckling, or the effect will not work. The sheet of elastic material “system” response in a quantized manor when force is applied in the perpendicular direction. Bonding at the points of highest probabilities and maximum duration( ie peeks and troughs) of the fields “sheet” produced a stable structure when the undulations are bonded to a flat sheet that is placed above and below the core material.

  • @kisho2679
    @kisho2679 2 หลายเดือนก่อน

    While spherical harmonics are the eigenfunctions of the hydrogen atom to describe its state, which are the eigenfunctions for the other 117 chemical elements (helium, etc.)?

  • @zhavlan1258
    @zhavlan1258 2 หลายเดือนก่อน

    New technologies, ❤new research tools. BIG SCIENCE doesn't want to eliminate the *BIG MUD* of noise in fundamental optical experiments. WHY? Let me suggest for schoolchildren and students on one's own to measure the Universe, dark energy, black holes, etc. To do this, I propose two practical devices. «laser tape measure *+reference distance* 1,000,000 m”» and «Michelson-Morley HYBRID Gyroscope». I am writing to you with a proposal for the joint invention of a HYBRID gyroscope from non-circular, TWO coils with a new type of optical fiber with a “hollow core photonic-substituted vacuum zone or (NANF)” where - the light travels 250000 (In a laser tape measure, the length of the optical fiber is fixed at 1000000 ) meters in each arm, while it does not exceed the parameters 84/84/84 cm, and the weight is 24 kg. Manufacturers of “Fiber Optic Gyroscopes” can produce HYBRID gyroscopes for educational and practical use in schools and higher education institutions. Einstein dreamed of measuring the speed of a train, an airplane - through the Michelson-Morley experiment of 1881/2024, and only then would the experiment be more than 70% complete. This can be done using a fiber optic HYBRID gyroscope. Based on the completion of more than 70% of Michelson's experiment, the following postulates can be proven: Light is an ordered vibration of gravitational quanta, and dominant gravitational fields adjust the speed of light in a vacuum. you can make scientific discoveries; in astronomy, astrophysics, cosmology, higher theoretical physics,... (We are not looking for ether, we will see the work of gravitational quanta) The result is a «theory of everything» in a simple teaching device and a new tape measure for measuring the universe.

  • @VortekStarling
    @VortekStarling 2 หลายเดือนก่อน

    You can't work out time dilation as simply as the common illustrations of the Einstein moving light clock thought experiment would suggest. For a light clock traveling at 0.866 light speed for instance, which has a Lorentz factor of 2, you can't just draw a 1 meter high light clock (if we say for simplicity that light travels 1 meter per second) and a horizontal line 0.866 meters long and join the top of the light clock to the end of the horizontal line and say that's how far light really traveled, because that line would be 1.322 meters long. It would take 1.322 seconds for light to travel that diagonal length but the Lorentz factor for 0.866 c is 2, not 1.322., so that diagonal line gave us nothing related to the Lorentz factor for that velocity. You can't get 2 from 1.322 because 2 divided by 1.322 is 1.51, which is a number unrelated to anything. Even if you say "Einstein made the light clock tick when the light goes both ways, not just one way", it wouldn't fix things, because 2 x 1.322 is 2.644, which is still not 2. I think he made the clock a 2 way instead of a 1 way just to muddy the waters a little more, to make his error less immediately obvious. I made the clock have a 1 way ticking cycle to keep everything clear and simple. For the diagonal line to be the real distance light would travel at Lorentz factor 2, it would need to be 2 meters long. To get that length for the diagonal light path, the distance traveled by the light clock along the horizontal path has to be 1.732 meters, not 0.866 meters. In other words, you would need to already know the Lorentz factor, and multiply the 0.866 by it, in order to correctly draw the diagram, because you would need to know that you have to let the light clock travel 1.732 meters, instead of 0.866, in order for the hypotenuse of the right triangle, the perceived diagonal light path, to be 2 meters long . How would you know what to multiply the 0.866 meters by to get the distance for the base of the triangle if you don't already know the Lorentz factor for the velocity of 0.866 c is 2? To be generous, we could conclude that Einstein simply made a mistake, but to not be generous we could conclude that he was being purposely deceptive and hoped nobody would ever notice. Neither of those two possibilities look good for Einstein. So what happens when Einstein said a certain thought experiment was the basis for his time dilation theory and then we check it and find that it doesn't even come close to working, what would that mean?

  • @joe_ninety_one5076
    @joe_ninety_one5076 2 หลายเดือนก่อน

    You don't need to separately add the constancy, or absolutely nature, of the speed of light. As described, given that Maxwell's equations contain the speed of light as a fixed constant the concept that the laws of physics are the same is enough and that was Einstein's genius.

  • @jnhrtmn
    @jnhrtmn 2 หลายเดือนก่อน

    Postulates are declarations, not observations. Given that velocity is INFINITELY relative, Relativity says that every time you change your velocity in any direction, EVERY photon of light coming at you in the ENTIRE Universe is INSTANTLY adjusted to YOUR new velocity creating a new perspective of the Universe FOR YOU. I don't care if the math works, because this is too goofy. You can't show me dimensions 1 or 2, and time is in your brain doing the math, so dimensions start out fake -adjusting that to create your theory is right out. Velocity does nothing in physics until it changes, so I don't think nature even realizes velocity. Velocity addition experiments with actual speed addition should be redone. The only one I have says, they calibrated the detector with an electron beam, and the electrons were assumed to not be faster than light. Then, if they were psycho and needed to prove Relativity, this has the entire world of science fooled. The muon atmosphere thing is a test, not a proof. We need more proofs. All Gamma-ray Bursts arrive here in order of wavelength, and they can't come out and say that. It is an "afterglow" theory, where they had to invent a way that radio gets here last, but that's the very value of radio in astronomy that radio skips debris to beat visible light --not in these bursts. There is no way Relativity would be here if this were known in 1900.

  • @douglasstrother6584
    @douglasstrother6584 2 หลายเดือนก่อน

    Arnold Sommerfeld was an Alpha Physicist!

  • @skakofilsanonims4434
    @skakofilsanonims4434 2 หลายเดือนก่อน

    All the people who love science and has a degree know that Mileva Maric did the work for Einstein with the Lorentz transformation.

    • @juergenlidl6765
      @juergenlidl6765 2 หลายเดือนก่อน

      No, his dog did most of the hard tasks

    • @skakofilsanonims4434
      @skakofilsanonims4434 2 หลายเดือนก่อน

      @@juergenlidl6765 no, your mother did.

    • @bernardofitzpatrick5403
      @bernardofitzpatrick5403 2 หลายเดือนก่อน

      Brings to mind Rosalind Franklin and the whole discovery of the structure of DNA, story. She surely deserved a large % of the credit , for her input from her X-ray crystallography work. Only now, years later, is her contribution somewhat recognised. Crick and Watson took all the credit!

    • @CliffSedge-nu5fv
      @CliffSedge-nu5fv หลายเดือนก่อน

      Al was too busy being a pimp and a playa.

  • @camilosantos4380
    @camilosantos4380 2 หลายเดือนก่อน

    In the book “ASCENSO, Civilization of the Humus” published on Amazon, a theory is proposed that unifies relativistic and quantum physics, supported by a mathematical and analytical calculation of the fine-structure constant (1/137) for the 3rd dimension and the other dimensions that make up the Universe. It includes parallel and mirror universes. It proposes a mathematical theory of how the multiverse should be structured and the action of dark matter and energy within it

  • @Bjowolf2
    @Bjowolf2 2 หลายเดือนก่อน

    The Lorentz factors actually look like projections ( cosines) back and forth, if you interpret them geometrically, so maybe there is something deeper going on here? - so that it's not the length of the moving object that contracts along the direction of motion with velocity v relative to the observer, but rather the "presence" of the object that shrinks, i.e. its projection onto the "length" dimension of the observer, if we think of it as a complex number / "vector" that rotates more and more away from this "length" axis ( but still has the same length in its own "length" dimension, so to speak ), the more v approaches c. Is there any deeper explanation as to why c is the same in all reference frames? Where does this very strange "demand" come from? And do we actually know that c has always had the same value over long cosmological time spans? It wouldn't be totally unreasonable, if it somehow depended on how much space had expanded at a given time.

  • @TunLeng-i1z
    @TunLeng-i1z 2 หลายเดือนก่อน

    ❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤very very happy good ❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤

  • @physicsVischi
    @physicsVischi 2 หลายเดือนก่อน

    There is a type of Space-Time diagram in which the scale for both systems is the same. They are called "Loedel Palumbo Diagrams" and with them any analysis of special relativity is significantly simpler. They were developed in the mid-20th century by the Uruguayan physicist Enrique Loedel Palumbo from the simple, but brilliant idea, of considering in a diagram of Minkowski not one, but two "mobile" systems with the same speed, but in opposite directions and then remove the "fixed" system from the middle and... voila! you have two systems with the same scale! .The relative speed between these two systems is now given by the sine of the angle between the axes, not by the tangetic and trigonometry is that of all life. It is a shame that they are not very widespread.The deduction is very simple and can be found in the following link th-cam.com/video/o4kKeG8PyyM/w-d-xo.html

  • @keithmcgarrigle8921
    @keithmcgarrigle8921 2 หลายเดือนก่อน

    If speed of a visable laser light is 90 degrees to me what is the speed of light would I see? Then if the laser beam is rotated by 45 degees has my time line changed even though the earth has rotated?

  • @Stellar-Forge
    @Stellar-Forge 2 หลายเดือนก่อน

    The AI grammar and cadence is not good.

  • @williamwalker39
    @williamwalker39 2 หลายเดือนก่อน

    Light is both a particle (photon of energy) and a wave (field). This matches very well with the Pilot Wave interpretation of Quantum Mechanics. But the Pilot Wave (field) is known to interact instantaneously with the particle (photon of energy), which violates Relativity. Perhaps this is telling us Relativity is not correct? I think this is the case, and here is my proof! The speed of light is not a constant as once thought, and this has now been proved by Electrodynamic theory and by Experiments done by many independent researchers. The results clearly show that light propagates instantaneously when it is created by a source, and reduces to approximately the speed of light in the farfield, about one wavelength from the source, and never becomes equal to exactly c. This corresponds the phase speed, group speed, and information speed. Any theory assuming the speed of light is a constant, such as Special Relativity and General Relativity are wrong, and it has implications to Quantum theories as well. So this fact about the speed of light affects all of Modern Physics. Often it is stated that Relativity has been verified by so many experiments, how can it be wrong. Well no experiment can prove a theory, and can only provide evidence that a theory is correct. But one experiment can absolutely disprove a theory, and the new speed of light experiments proving the speed of light is not a constant is such a proof. So what does it mean? Well a derivation of Relativity using instantaneous nearfield light yields Galilean Relativity. This can easily seen by inserting c=infinity into the Lorentz Transform, yielding the GalileanTransform, where time is the same in all inertial frames. So a moving object observed with instantaneous nearfield light will yield no Relativistic effects, whereas by changing the frequency of the light such that farfield light is used will observe Relativistic effects. But since time and space are real and independent of the frequency of light used to measure its effects, then one must conclude the effects of Relativity are just an optical illusion. Since General Relativity is based on Special Relativity, then it has the same problem. A better theory of Gravity is Gravitoelectromagnetism which assumes gravity can be mathematically described by 4 Maxwell equations, similar to to those of electromagnetic theory. It is well known that General Relativity reduces to Gravitoelectromagnetism for weak fields, which is all that we observe. Using this theory, analysis of an oscillating mass yields a wave equation set equal to a source term. Analysis of this equation shows that the phase speed, group speed, and information speed are instantaneous in the nearfield and reduce to the speed of light in the farfield. This theory then accounts for all the observed gravitational effects including instantaneous nearfield and the speed of light farfield. The main difference is that this theory is a field theory, and not a geometrical theory like General Relativity. Because it is a field theory, Gravity can be then be quantized as the Graviton. Lastly it should be mentioned that this research shows that the Pilot Wave interpretation of Quantum Mechanics can no longer be criticized for requiring instantaneous interaction of the pilot wave, thereby violating Relativity. It should also be noted that nearfield electromagnetic fields can be explained by quantum mechanics using the Pilot Wave interpretation of quantum mechanics and the Heisenberg uncertainty principle (HUP), where Δx and Δp are interpreted as averages, and not the uncertainty in the values as in other interpretations of quantum mechanics. So in HUP: Δx Δp = h, where Δp=mΔv, and m is an effective mass due to momentum, thus HUP becomes: Δx Δv = h/m. In the nearfield where the field is created, Δx=0, therefore Δv=infinity. In the farfield, HUP: Δx Δp = h, where p = h/λ. HUP then becomes: Δx h/λ = h, or Δx=λ. Also in the farfield HUP becomes: λmΔv=h, thus Δv=h/(mλ). Since p=h/λ, then Δv=p/m. Also since p=mc, then Δv=c. So in summary, in the nearfield Δv=infinity, and in the farfield Δv=c, where Δv is the average velocity of the photon according to Pilot Wave theory. Consequently the Pilot wave interpretation should become the preferred interpretation of Quantum Mechanics. It should also be noted that this argument can be applied to all fields, including the graviton. Hence all fields should exhibit instantaneous nearfield and speed c farfield behavior, and this can explain the non-local effects observed in quantum entangled particles. *TH-cam presentation of above arguments: th-cam.com/video/sePdJ7vSQvQ/w-d-xo.html *More extensive paper for the above arguments: William D. Walker and Dag Stranneby, A New Interpretation of Relativity, 2023: vixra.org/abs/2309.0145 *Electromagnetic pulse experiment paper: www.techrxiv.org/doi/full/10.36227/techrxiv.170862178.82175798/v1 Dr. William Walker - PhD in physics from ETH Zurich, 1997

  • @williamwalker39
    @williamwalker39 2 หลายเดือนก่อน

    The speed of light is not a constant as once thought, and this has now been proved by Electrodynamic theory and by Experiments done by many independent researchers. The results clearly show that light propagates instantaneously when it is created by a source, and reduces to approximately the speed of light in the farfield, about one wavelength from the source, and never becomes equal to exactly c. This corresponds the phase speed, group speed, and information speed. Any theory assuming the speed of light is a constant, such as Special Relativity and General Relativity are wrong, and it has implications to Quantum theories as well. So this fact about the speed of light affects all of Modern Physics. Often it is stated that Relativity has been verified by so many experiments, how can it be wrong. Well no experiment can prove a theory, and can only provide evidence that a theory is correct. But one experiment can absolutely disprove a theory, and the new speed of light experiments proving the speed of light is not a constant is such a proof. So what does it mean? Well a derivation of Relativity using instantaneous nearfield light yields Galilean Relativity. This can easily seen by inserting c=infinity into the Lorentz Transform, yielding the GalileanTransform, where time is the same in all inertial frames. So a moving object observed with instantaneous nearfield light will yield no Relativistic effects, whereas by changing the frequency of the light such that farfield light is used will observe Relativistic effects. But since time and space are real and independent of the frequency of light used to measure its effects, then one must conclude the effects of Relativity are just an optical illusion. Since General Relativity is based on Special Relativity, then it has the same problem. A better theory of Gravity is Gravitoelectromagnetism which assumes gravity can be mathematically described by 4 Maxwell equations, similar to to those of electromagnetic theory. It is well known that General Relativity reduces to Gravitoelectromagnetism for weak fields, which is all that we observe. Using this theory, analysis of an oscillating mass yields a wave equation set equal to a source term. Analysis of this equation shows that the phase speed, group speed, and information speed are instantaneous in the nearfield and reduce to the speed of light in the farfield. This theory then accounts for all the observed gravitational effects including instantaneous nearfield and the speed of light farfield. The main difference is that this theory is a field theory, and not a geometrical theory like General Relativity. Because it is a field theory, Gravity can be then be quantized as the Graviton. Lastly it should be mentioned that this research shows that the Pilot Wave interpretation of Quantum Mechanics can no longer be criticized for requiring instantaneous interaction of the pilot wave, thereby violating Relativity. It should also be noted that nearfield electromagnetic fields can be explained by quantum mechanics using the Pilot Wave interpretation of quantum mechanics and the Heisenberg uncertainty principle (HUP), where Δx and Δp are interpreted as averages, and not the uncertainty in the values as in other interpretations of quantum mechanics. So in HUP: Δx Δp = h, where Δp=mΔv, and m is an effective mass due to momentum, thus HUP becomes: Δx Δv = h/m. In the nearfield where the field is created, Δx=0, therefore Δv=infinity. In the farfield, HUP: Δx Δp = h, where p = h/λ. HUP then becomes: Δx h/λ = h, or Δx=λ. Also in the farfield HUP becomes: λmΔv=h, thus Δv=h/(mλ). Since p=h/λ, then Δv=p/m. Also since p=mc, then Δv=c. So in summary, in the nearfield Δv=infinity, and in the farfield Δv=c, where Δv is the average velocity of the photon according to Pilot Wave theory. Consequently the Pilot wave interpretation should become the preferred interpretation of Quantum Mechanics. It should also be noted that this argument can be applied to all fields, including the graviton. Hence all fields should exhibit instantaneous nearfield and speed c farfield behavior, and this can explain the non-local effects observed in quantum entangled particles. *TH-cam presentation of above arguments: th-cam.com/video/sePdJ7vSQvQ/w-d-xo.html *More extensive paper for the above arguments: William D. Walker and Dag Stranneby, A New Interpretation of Relativity, 2023: vixra.org/abs/2309.0145 *Electromagnetic pulse experiment paper: www.techrxiv.org/doi/full/10.36227/techrxiv.170862178.82175798/v1 Dr. William Walker - PhD in physics from ETH Zurich, 1997

  • @monkerud2108
    @monkerud2108 2 หลายเดือนก่อน

    Einstein got that wrong conceptually, his math is correct, but it just doesnt tell you that the one way speed is determined by the theory, other than in the sense of words stapled onto representations that are isomorphic to representations where the one way speed varies, but all the same physical behaviour occiurs with no alterations.

  • @monkerud2108
    @monkerud2108 2 หลายเดือนก่อน

    In a certain sense, saying the speed of light is the same for everyone in all directions, is a bit like saying maxwells equation feels yellow, it has no physical significance as all, the statement that the one way speed cannot be measured given a certain way the equations of motion transform captures all the physics independently of talking about a one way speed at all.

  • @monkerud2108
    @monkerud2108 2 หลายเดือนก่อน

    Not to fault the creator of the video, but most professionals dont even know about this fact. They know its not possible to measure a one way speed, but few really comprehend that the principle that the speed of light is the same for all observers in all directions is just the consequence of a spesific coordinate choice, while the physics which is coordinate independent doesnt care whether that is true at all.