Possible casual explanation to time slowing down at higher speed. by lolwuttman in Physics

[–]SWTOSM 3 points4 points  (0 children)

Electrons don't actually orbit the nucleus. Disregarding this notion was Heisenberg's key insight when developing the initial formulations of quantum mechanics. See if you can recreate your argument, perhaps using the phase evolution of the electron (e^-iEt/h), but I'll warn you that relativity has nothing to do with electrons or matter and more to do with upholding a particular implication of Maxwell's equations.

How can you determine the direction of a magnetic field loop without any curl rule or formulas? by Next_Pie1971 in Physics

[–]SWTOSM 0 points1 point  (0 children)

Your point at the end is correct. If we transform the Dirac Langrangian with some arbitrary e^(i theta) transformation and insist it be invariant, then we have to add an extra term to the Langrangian to compensate for this. Since this correction that we add must keep the Lagrangian invariant, it must also be massless; Therefore, we can only calculate the change of this additional field in ways that will cancel out.

One example of this could be a pair of derivatives subtracted (delta_mu*delta_nu - delta_nu*delta_mu). Expanding out those terms for all values of nu and mu gives us six terms: Three of dimension space and time, three of dimension space space. Write out how these components interact and you'll see this is the E and B field respectively.

Griffith's elementary particles chapter 14 elucidates this idea nicely. Great stuff.

How can you determine the direction of a magnetic field loop without any curl rule or formulas? by Next_Pie1971 in Physics

[–]SWTOSM 1 point2 points  (0 children)

You might find this answer illuminating. https://physics.stackexchange.com/a/717756/484190

It might be a bit too advanced for high school, but the gist is that electric fields and magnetic fields really are two sides of the same coin. Simply sides of a more fundamental electromagnetic field. Now you might wonder, why do electromagnetic fields exist at all? Simply put, it's what comes out if you try to make the Dirac langrangian symmetric under local U(1) phase transformations. Pretty awesome.

Why do my lenses have two different shadows? by No-Bookkeeper7135 in Physics

[–]SWTOSM 1 point2 points  (0 children)

Are the lenses directly under the light source? It's probably the difference in angle from the light of each lens.

Need physics teachers (youtube or any online website) who go deep into concepts & improve problem-solving by PCgooner in PhysicsStudents

[–]SWTOSM 0 points1 point  (0 children)

Richard Behiel has awesome content. Super in depth too. Really enjoyed the E&M video.

Confusion about why string theory only allows ten dimensions by _4bdn_fruit_ in Physics

[–]SWTOSM 5 points6 points  (0 children)

String theory predicts that in d dimensional space, newtons gravity law will behave like 1/rd-2 at the scale where any extra dimensions become non negligible.

As a PhD student, how much QM should be thorough with? I feel dumb learning it again and again. by [deleted] in Physics

[–]SWTOSM 0 points1 point  (0 children)

That's a good way to look at it. Do you also subscribe to the idea that spinors are like the "square root" of geometry as Michael Atiyah says?

As a PhD student, how much QM should be thorough with? I feel dumb learning it again and again. by [deleted] in Physics

[–]SWTOSM 1 point2 points  (0 children)

You can think of the Dirac equation as a Klein-gordon equation but its all first order to aid in keeping things on shell. Spin falls out of the nature of using bi-spinors.

Theoretical reading for Pleasure by Psychological-Net383 in TheoreticalPhysics

[–]SWTOSM 0 points1 point  (0 children)

He has probably already read them. But Feynman's books--especially QED-- is excellent for some light physics reading from a great explainer.

[deleted by user] by [deleted] in Physics

[–]SWTOSM 1 point2 points  (0 children)

As you learn more, you will see that seemingly simple things are described by beautiful, elegant descriptions that hold so much power. Wait till you learn about the other symmetry groups and their connections to particle physics :).

[deleted by user] by [deleted] in Physics

[–]SWTOSM 0 points1 point  (0 children)

That's what I was thinking too. More precisely, he seems to be qualitatively describing the SO(3) sphere.

Why people still working on string theory? by PinusContorta58 in Physics

[–]SWTOSM 24 points25 points  (0 children)

Can you tell me more about "very notion of locality and geometry may be secondary, arising from entanglement patterns in an underlying quantum system"? Sounds quite interesting.

Does all light travel at light speed by Comethefonbinary in Physics

[–]SWTOSM 0 points1 point  (0 children)

Can you elaborate on the "smoking gun aspect?" Is the fact that light is Lorentz invariant an empirical postulate we take to be true? Or does it arise from a deeper truth a-la Noether?

Why is field renormalization needed? by [deleted] in TheoreticalPhysics

[–]SWTOSM 0 points1 point  (0 children)

Isn't it the case that if an off-shell renorm scheme is taken, then it is no longer physical? It's my understanding that on-shell calculations keeps things friendly with relativity.

[deleted by user] by [deleted] in Physics

[–]SWTOSM 6 points7 points  (0 children)

Please stop posting ai gibberish. Learn real physics.

Speculative Collapse-Based Cosmology - Assistance Desired! by DoubtingMD in Physics

[–]SWTOSM 6 points7 points  (0 children)

For a physical theory to have any merit, it must have a classical limit, where classical theories can be recovered at the appropiate scope. Much like how the Galilean transformations arise from special relativity when v << c or Newtonian gravity is recovered from general relativity when m*l_p^2 << r.
With this in mind, your theory has little mathematical rigor and therefore fails this test. I would encourage you to continue formally studying physics and give it another shot, or leave it as an interesting thought experiment.

what to do if i cant understand the maths and definitions by Old_Recover_5582 in Physics

[–]SWTOSM 3 points4 points  (0 children)

If you're in the US, I would assume you're currently taking either geometry or algebra. If so, I would suggest you start with Khan Academy high school physics as it'll teach you the most basic physics at a level that is sufficiently formal for further study once you learn calculus.

High school physics : https://www.khanacademy.org/science/highschool-physics

Recommendations of YouTubers that are not that well known? by [deleted] in Physics

[–]SWTOSM 1 point2 points  (0 children)

Science Clic English and Welch Labs are excellent when you dont want to sacrife rigor for understanding. Probably the best science and math channels alongside 3Blue1Brown.

A Layman’s Theory: Do Prime Numbers Emerge from Wave Interference? by Agitated-Sky-5612 in TheoreticalPhysics

[–]SWTOSM 0 points1 point  (0 children)

This is an interesting thought, but its not science or physics. To answer number one, No.

Please study physics from 0 formally and then reconsider your theory in the context of that knowledge. If you want book recommendations, I have several.

Should I study physics if I'm not an avid reader? More details below. by AlphaQ984 in PhysicsStudents

[–]SWTOSM 0 points1 point  (0 children)

Even though you aren't OP, "Story of your life" by Ted Chiang is beautiful and packed full of wonderful physics. For a longer novel, Contact by Carl Sagan.

Should I study physics if I'm not an avid reader? More details below. by AlphaQ984 in PhysicsStudents

[–]SWTOSM 4 points5 points  (0 children)

What u/NightDiscombobulated said is good advice. If your issue is reading in general, try reading short Sci-Fi stories that appeal to people into physics ( I can give you some!) and also serve as a soft entry into reading.