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Physics Forums
47m ago
I searched for this in the forum but apparently no one has asked this yet. So my question is, do black holes have magnetic fields and if so, does the magnetic field extend beyond the event horizon?
I have a thought experiment in mind. Consider a neutron star, which has a very powerful magnetic...
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Physics Forums
47m ago
Hello folks. Approximately 1 year ago, I was quite bad with reading subtle body language cos of my autism. Fast forward to 2024, and now I can read it a bit better. One of the first subtle body language cues noticed by me is head posture. A year ago, I have noticed that some folks hold their...
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Physics Forums
2h ago
I've taken up the small scale of mining on the materials processing end as a hobby and have designed and built personal rock crushers and material separation implements as proof of concept design based on other DIY-ers using social media. I designed and.constructed shaker table for separating...
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Physics Forums
3h ago
Suppose in the presence of an electric field we solve electronic Hamiltonian with eigen energies and corresponding eigenstates ##|\psi\rangle##. The action of momentum operator on the stationary states ##|\psi\rangle## doesn't change by time. So, momentum-change (or acceleration) seems...
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Physics Forums
3h ago
Hello everyone,
I would be thankful ir someone explained where I am mistaken in this reasoning on Einstein’s mental experiment on Special Relativity.
Taking the railway as K reference frame, a light beam is thrown in the x positive direction the moment the train passes in the same positive...
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Physics Forums
6h ago
I tried to solve the question using two different approaches to gain a better understanding of the subject. However, I reached two different results with each approach.
I believe I used Gauss's law to find the electric charge distribution and the electric field inside the cavity...
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Physics Forums
7h ago
It's obvious that the Observer Effect can take place without conscious observation, for example with a photon and electron out in the wild, but I'm trying to find a single study which disproves the role of conscious measurement within the observer effect.
An experiment which I think would...
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Physics Forums
8h ago
A uniform circular motion of a point always yield an equation u=cos(wt)i +sin(wt)j of position vector. Which we deduce the acceleration and velocity vector with constant magnitude and they are perpendicular at each instant. Can I use the information of them at one instant to predict the position...
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Physics Forums
8h ago
It's obvious that the Observer Effect can take place without conscious observation, for example with a photon and electron out in the wild, but I'm trying to find a single study which disproves the role of conscious measurement within the observer effect.
An experiment which I think would...
Read more ..read more