Can Light Be Deflected by a Constant Electric Field?

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Discussion Overview

The discussion centers around the question of whether light can be deflected by a constant electric field, specifically in the context of classical electrodynamics. Participants explore the theoretical implications of electric and magnetic fields on light's trajectory.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant questions if light should be deflected in a constant electric field according to classical electrodynamics.
  • Another participant asserts that light has no charge, suggesting it would not be deflected.
  • Some participants propose that light has its own electric and magnetic fields, which could potentially interact with an external constant electric field.
  • A participant mentions the presence of electric fields on Earth and speculates about their possible effects on light's trajectory.
  • One participant argues that the linearity of classical electrodynamics implies that the external electric field does not affect light, as solutions can be separated.

Areas of Agreement / Disagreement

Participants express differing views on whether light can be affected by a constant electric field, with no consensus reached on the matter.

Contextual Notes

The discussion highlights the complexity of interactions between light and electric fields, with assumptions about linearity and the nature of light's fields being central to the arguments presented.

Gavroy
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hi

I asked myself, whether light should be deflected when it is in a constant electric field after classical electrodynamics? Does anybody know this?

I don't really know this...
 
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No because light has no charge .
 
but it has a electric and magnetic field which could interact with the constant field?
 
you know we have electric field on the surface of the earth.if this external electric field had an effect on light trajectory...
 
Gavroy said:
hi

I asked myself, whether light should be deflected when it is in a constant electric field after classical electrodynamics? Does anybody know this?

I don't really know this...

The equations of classical electrodynamics are completely linear. In other words, If I have some solution (E1, B1) to the equations of classical electrodynamics, and I have some other solution (E2, B2), then the sum (E1+E2, B1+B2) is also a solution. This means that the electric field in the electromagnetic wave and the external electric field can be completely separated, so the external electric field has no impact on the light.
 

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