Possible EVP on police body cam on a YouTube video.
First off, here is the link https://youtu.be/1LG-wAdT904?is=IWo9HI1SwXtLyDmI
And here are the time stamps 0:13, 3:10, and 5:18.
All I know is that whatever it is says the same thing at every time stamp. Also, I watched a couple different uploads of the video, and the voice is on all of them at the same place in all videos. I don't know what it is, however, it sounds exactly like an EVP on every ghost hunting tv show I ever watched. It's out of place, I could not determine if it was in the fairground or background. For a second I thought it was from a Starbucks employee in the background because the video makes a reference to the employee at just about the same time as the 3:10 voice is heard, but no it wasn't that. Plus it's on two other places on the video without that employee anywhere near them and it sounds wierd, like there is no depth to voice, and again the same voice can be heard from different uploader. Anyway maybe it's all just an elaborate hoax. What do you think it is?
u/Johne1618 — 5 days ago
▲ 2 r/AskPhysics
In Coulomb gauge is the transverse current density local or non-local?
In Coulomb gauge:
∇·A = 0.
Scalar potential:
∇²φ = −ρ/ε₀.
Vector potential:
(∇² − (1/c²)∂²/∂t²)A = −μ₀ J_T.
The total current density J is the sum of the longitudinal J_L and transverse J_T components
J = J_L + J_T,
J_L = ε₀∇(∂φ/∂t),
J_T = J - J_L.
The fields are recovered from
E = −∇φ − ∂A/∂t,
B = ∇×A.
Is J_T a local field defined in the region of the source whereas J and J_L are non-local throughout space?
u/Johne1618 — 1 month ago
▲ 6 r/AskPhysics
Does the Coulomb gauge imply instantaneous longitudinal electric field?
In Coulomb gauge
∇⋅A = 0.
The scalar potential φ obeys the instantaneous Poisson's equation
∇^(2)φ = - ρ / ε₀.
The vector potential A obeys the causal wave equation
∇²A − (1/c²) ∂²A/∂t² = −μ₀ Jₜ
where the transverse current Jₜ is given by
Jₜ = J − ε₀∇(∂φ/∂t).
The electric and magnetic fields are given by
E = −∇φ − ∂A/∂t,
B = ∇×A.
The electric field is made up of an instantaneous longitudinal piece −∇φ and a causal transverse piece −∂A/∂t.
Doesn't the instantaneous longitudinal piece −∇φ violate causality allowing signals to be sent faster than light?
People say that the instantaneous −∇φ term is cancelled out by an instantaneous component of the −∂A/∂t term leaving a fully causal total electric field E.
I don't see how that can happen as the magnetic potential A is completely determined by a causal wave equation so that it is entirely causal.
u/Johne1618 — 1 month ago
▲ 0 r/AskPhysics
Does “collapsing” an electric dipole lead to causality violation?
Consider an electric dipole p = qd at the origin.
The magnitude of the electric field at a distance r from the origin goes like
E ~ p / r^3.
If one reduces the separation d to zero so that the +q and -q charges coincide at the origin then by Gauss’s law and spherical symmetry the net electric field becomes zero everywhere instantaneously.
Does this disobey causality?
u/Johne1618 — 1 month ago
Saugus train station was moved from Saugus, California in 1980 to its new location, a couple of miles away, inside the William S. Hart Park. Brandon Alves and Joey West of the American Paranormal Research Association (2006 onwards) caught an EVP of a male ticket clerk, a woman asking a question (very clear) and a man answering, along with the noise of a train, from the second floor of the station building in its new location.
This is what I hear (click or tap to reveal)
Ticket clerk: >!That’s three dollars please (clunk)!<
Woman: >!Will that be our train?!<
Man: >!That’s certainly like ours, yeah!<
Does this give some credence to the "stone tape" theory that some ghost phenomena are recorded in the structure of the buildings themselves?
u/Johne1618 — 3 months ago