Can a magnetic flux travel through space without an electric component?

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Discussion Overview

The discussion centers on the question of whether a magnetic flux can travel through space without an accompanying electric component. Participants explore concepts related to electromagnetic energy, the nature of light, and the implications of Faraday's law in this context.

Discussion Character

  • Debate/contested
  • Exploratory
  • Technical explanation

Main Points Raised

  • Some participants assert that electromagnetic energy, as described by Maxwell's equations, inherently includes both electric and magnetic components that are perpendicular to each other.
  • One participant questions the phase relationship between electric and magnetic fields in light, suggesting that light must travel with maximum efficiency and may not dissipate energy as it travels vast distances.
  • Another participant references the equation c = 1 / √(ε0 μ0) to argue about the presence of an electric component in light, while also expressing uncertainty about how light travels.
  • Some participants emphasize the importance of Faraday's law, stating that it applies universally to electromagnetic phenomena, including the behavior of antennas and radiation in space.
  • A participant suggests that the concept of "ether" might be relevant to understanding the propagation of light, although this term is noted as outdated.
  • There are claims that the electric field does not ionize sparse gases as light travels, indicating that most photons do not interact with particles along their path.
  • One participant mentions that in certain media, the electric and magnetic components can be out of phase, which adds complexity to the discussion.
  • Another participant challenges speculative claims and emphasizes the need for evidence in discussions about electromagnetic theory.

Areas of Agreement / Disagreement

Participants express multiple competing views regarding the relationship between electric and magnetic components in light and whether Faraday's law applies in the context of radiation traveling through space. The discussion remains unresolved, with no consensus reached on the original question.

Contextual Notes

Some participants acknowledge that their statements are speculative and not based on established scientific consensus. There are references to the need for a deeper understanding of electromagnetic theory and the implications of various laws governing electromagnetic phenomena.

vector22
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Maxwell says that electromagnetic energy traveling through space has a electric and magnetic component at right angles. That is what the measurements prove but... what about electromagnet energy that travels through space unhindered? The permitivity and permiability of space seems to be constant so is that why light has a finite speed. If you slow down light by taking a measument you will find elctric and magnetic componet but if you leave it unhindered will the electrostatic component collapse to allow the energy to travel as magnetic flux only?

To be specific, can a magnetic flux travel through space without an electric component?
 
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vector22 said:
To be specific, can a magnetic flux travel through space without an electric component?
No. See Faraday's law.
 
I have trouble imagining that the electric field is in phase with the magnetic field as light travels through space unhindered. To me the laws of conservation must be satified if light is going to travel at light speed. So why does light travel huge distances at light speed. We can see galaxys millions of light years away. if the E field of that light were to ionize the sparse gases as it travled it would be dissipatesd much like a resistance. So as light travels it MUST travel with maximum efffiicentcy. . Just my opinion, but what law of nature would prevent light travleing as a maganetic disturbance in the "ether" I mean the ether is the permitivity permiability constants of a vacuum - one of the very characterisitics of space itself. That might be how light cna travel these huge distances without loosing energy. The magnetic flux disturbance travels fast enoguh so that it's natural tendency to collapse into an E field are prevented thus we might be able to think of a magenic flux disturbacne traveling at light speed as sort of a "frozen magnetic flux"


I just found this equation on this site:

c = 1 / √(ε0 μ0).

It is saying that light has a E component - or does it?.


The equatio does not tell us by which mode that light travels in . It might be a mistake to conclude that light is balance between the electric and magnetic fields. The equation does not satisfy any laws of consvervation of energy for a disturbance traveling at the speed of light
 
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vector22 said:
I just found this equation on this site:

c = 1 / √(ε0 μ0).

It is saying that light has a E component - or does it?. The equatio does not tell us by which mode that light travels in . It might be a mistake to conclude that light is balance between the electric and magnetic fields. The equation does not satisfy any laws of consvervation of energy for a disturbance traveling at the speed of light

You made several claims, but never showed any evidence of such claim. Please note that, per the PF Rules that you had agreed to, such speculative posts are not allowed.

Asking for evidence for the existence of E-field in light is rather strange. Particle accelerators all over the world WORK because of the existence of E-field in EM radiation such as light. The LINACs that are the accelerating structures use the E-field in a particular RF geometry to accelerate charged particles.

Learn a little bit about waveguides before forming these "thoughts".

Zz.
 
vector22 said:
what law of nature would prevent light travleing as a maganetic disturbance in the "ether"
I already answered this: Faraday's law.
 
if the E field of that light were to ionize the sparse gases as it travled it would be dissipatesd much like a resistance

This doesn't happen because the vast majority of photons do not interact with any particles on the way here. The ones that do don't reach us.
 
You can have the E an B components out of phase when light travels certain media.
 
Zapper Z

I have re read the posting rules and agree I don't want to confuse already published science about electromagnetics but my posts were not entirely speculative for instance I asked the question:


Just my opinion, but what law of nature would prevent light travleing as a maganetic disturbance in the "ether"

now i realize that the word "ether" is almost not used anymore and maybe it was a bad choice to use that word . Also in my posts I never said my speculations were factual they were entirely my opinion and unproved. I don't want to mislead anyone who is interested in the sciences I would like them to realize that science is often not what we think it is. For instance Galileo was put in jail for saying the Earth revolved around the sun. The pope Wolsey put him under house arrest just because he was teaching science that was not contemporary.

Let us not repeat history

*** cragar
what is this media you speak of.

***
Dalespam
you mean Farday's law of induction.?

That works just fine for physical wires in time changing magnetic fields. An antenna will emit radio waves because one of the constraints of the law of induction is violated; that the conducting wire do not form a closed loop around the magnetic flux. So I would think that once a radio wave is set loose, then Faraday's law should be interpreted differently for radiation that is traveling through space unhindered.
 
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in a good conductor the B field will be out of phase with the E field by 45 degrees.
reference: Griffiths page 396
 
  • #10
vector22 said:
Also in my posts I never said my speculations were factual they were entirely my opinion and unproved.

This is EXACTLY the type of posts that we do not allowed. Remember, you have explicitly AGREED to abide by those rules upon joining this forum.

I don't want to mislead anyone who is interested in the sciences I would like them to realize that science is often not what we think it is. For instance Galileo was put in jail for saying the Earth revolved around the sun. The pope Wolsey put him under house arrest just because he was teaching science that was not contemporary.

Oh puhleeze! I know Galileo, and you're not Galileo. Galileo proposed his ideas based on an INTIMATE understanding of the science. You were making wild, unfounded guesses, even by your own admission. So don't try to compare yourself with him. It is not even close. You are invoking tactics and arguments that are popularly used by crackpots.

You have not indicated if you've even understood my rebuttal to your post. I'm guessing that you've never studied the physics associated with waveguides and why geometries such as TE and TEM modes would have EASILY answered your question.

Zz.
 
  • #11
vector22 said:
you mean Farday's law of induction.?

That works just fine for physical wires in time changing magnetic fields. An antenna will emit radio waves because one of the constraints of the law of induction is violated; that the conducting wire do not form a closed loop around the magnetic flux. So I would think that once a radio wave is set loose, then Faraday's law should be interpreted differently for radiation that is traveling through space unhindered.
No, Faraday's law is always applicable in EM. It is not constrained only to wires and it is certainly not violated in antennas.

You really need to stop speculating and start studying. Your question has been clearly and unambiguously answered already.
 

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