- #1
HeilPhysicsPhysics
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I don't understand what is the meaning of "flux" .I just know it has some relation between eletromagnetism.Please explain what is flux to me.
Explaining the Meaning of "Flux" in Electromagnetism
- Context: High School
- Thread starter HeilPhysicsPhysics
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- Electromagnetism Flux
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Discussion Overview
The discussion centers around the concept of "flux" in electromagnetism, exploring its meaning and applications. Participants seek clarification on the term and its relevance to electromagnetic phenomena.
Discussion Character
- Conceptual clarification
- Technical explanation
- Exploratory
Main Points Raised
- One participant expresses confusion about the meaning of "flux" and its relation to electromagnetism.
- Another participant suggests that flux could refer to field lines (like magnetic flux) or the flow of particles (such as photons) per unit area, generally describing it as the rate of transfer of fluid, particles, or energy across a surface.
- A participant defines magnetic flux specifically as the magnetic field measured in webers and recommends reading about electromagnetic induction.
- Another participant explains that flux can be understood as the value of the surface integral of any vector field, noting that if the field is constant over the area, flux is the product of the field and the area.
- It is mentioned that the calculation of flux assumes the area and field are perpendicular, with a reference to the surface integral being the integral of the dot product of the field and area.
- A participant humorously acknowledges a clarification regarding dot products and their relation to flux.
- One participant offers a simplified visualization of flux as a "surface bombardment rate."
Areas of Agreement / Disagreement
The discussion contains multiple viewpoints on the definition and interpretation of flux, with no consensus reached on a singular explanation. Participants provide various definitions and contexts without resolving the differences.
Contextual Notes
Some definitions provided depend on specific conditions, such as the constancy of the field and the orientation of the area with respect to the field. The discussion does not resolve the implications of these conditions.
- #2
Astronuc
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It could mean field lines (e.g. magnetic flux) per unit area or flow (photons) per unit area.
Or generally flux is the rate of transfer of fluid, particles, or energy across a given surface.
Or generally flux is the rate of transfer of fluid, particles, or energy across a given surface.
- #3
Slayer26M
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magnetic flux is the magnetic field measured in webers. You should read up on electromagnetic induction. http://en.wikipedia.org/wiki/Electromagnetic_induction
- #4
Gokul43201
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A flux is the value of the surface integral of any vector field. If the field is constant over the area of interest, the flux is simply the product of the field and the area. Conversely, the magnitude of the field is given by the flux per unit area.
- #5
Andrew Mason
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Provided the area and field are perpendicular, of course (the surface integral being the integral of the dot product of the field and the area over the surface).Gokul43201 said:
AM
- #6
Gokul43201
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Dot products are products too! 
Yes, I should have been more clear. Thanks for fixing that.
Yes, I should have been more clear. Thanks for fixing that.
- #7
DryRun
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An easier way of visualizing this: Flux is surface bombardment rate.
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