Newest Questions
244,062 questions
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Rotation vectors for spheres in velocity vector field are additive
Apologies as I am quite unfamiliar with rotational physics. But I hope that some physicists here may be able to give me a satisfying and intuitive explanation.
Background/Motivation: I am from a pure ...
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Is there a connection between the Podkletnov effect and entropic gravity?
In superconductors, entropy decreases when the material transitions to a superconducting state, below the critical temperature. Entanglement entropy plays an important role in this phase transition.
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The emergence of the universe as a consequence of the passage of a fundamental wave through hyperspace - Is it? [closed]
Can be this model in which our observable universe emerges as a structural interference pattern produced by a fundamental dynamic entity — referred to here as the primary wave — propagating through a ...
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How are the modal matrix elements derived in this PDE projection?
I'm trying to replicate some results I found in a research paper ("Newtonian and Variational Formulations of the Vibrations of Plates With Active Constrained Layer Damping" by Chul H. Park ...
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Energy conservation in interference of coherent string waves, with path difference
This is the mail I wrote to my prof-
imagine two coherent sources making waves on a string, they travel different distances to meet at a fixed point and the waves interfere, we know that theres a ...
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Physical intuition for optimal single-domain configuration
Consider the energy functional for a $\Lambda$-domain configuration
$$
H_{\Lambda}(d,\mathbf{q}) \;\propto\;
\Bigl((-1)^{\Lambda} + 2\sum_{\alpha=1}^{\Lambda}(-1)^{\alpha+1}q_\alpha\Bigr)
\Bigl((-1)^{\...
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Regularization Pauli-Villars of a massive scalar field, i need help with Numerical values mass [closed]
I am do a simulations of the colapse of a scalar field with his quantum correction, i achieve a massless case, but the I have a problema with the massive case. I can't find the numerical values of ...
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Lebesgue measure of the set of invariant tori in KAM theorem
Fasano & Marmi Analytical Mechanics, states the K.A.M. theorem as follows:
Theorem 12.12 (KAM) Consider a quasi-integrable Hamiltonian system
$$H(J, χ, ε) = H_0(J) + εF(J, χ) \tag{1}$$
and assume ...
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Capacitance between two cylinders of metal [closed]
Consider a pair of cylinders of diameter $d$ which are $D$ apart, this is a close to trivial system to get the capacitance per meter of.
If it is possible to use $\pi \epsilon * ( 1 / ln ((D/d)+((sqrt(...
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What's the difference between arcs that can melt metal and arcs that are thin and simply just feel like they pinch you?
There are 2 different arcs I've seen online, the ones that look like a thin line that you can put your hands in and only feel a pinch, and ones strong enough to melt metal (as shown below). What makes ...
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To avoid having to deal with decoherence issues why not exploiting state superposition only in a set of non-entangled qbit? [closed]
I understand that the performance of a quantum computer is based on two properties of quantum physics : state superposition of a qbit and entanglement of qbits. This enables simultaneous calculations. ...
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Conformal Transformation of Fields in Embedding Space
I was looking at spinning conformal correlators, where the embedding space formalism for conformal field theory is introduced. Early on, they give a prescription for defining fields real space as
\...
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Surviving Cold: Using a Refrigerator as a Heat Source? [closed]
If you're trapped in a freezing room with only a refrigerator, should you leave its door open or closed to increase your chances of survival?
I asked this question on ChatGPT and Deepseek, they gave ...
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Measuring angular distance with a historical cross-staff / Jacob's (Jacobs) staff
I bought this craft-sheet kit from which one can build / construct your own cross-staff, also known as Jacob's staff. A cross-staff can be used to measure angular distances for example on the sky for ...
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Is there a relationship between Gravity and the Fine Structure Constant? [closed]
I understand the FSC appears in various places within physics and is primarily associated with the electromagnetic force, but not gravity.
Based on the following equation, I would be inclined to state ...
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