Electric Field & Conductive Fluid: Exciting Bubble Gas?

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Discussion Overview

The discussion explores the effects of an electric field on a column of conductive fluid and its potential to excite gas within bubbles in that fluid. Participants consider the theoretical implications, experimental possibilities, and related phenomena.

Discussion Character

  • Exploratory
  • Technical explanation
  • Conceptual clarification
  • Experimental/applied

Main Points Raised

  • One participant questions whether an electric field can excite gas around a bubble in a conductive fluid, particularly if the gas is susceptible to excitation.
  • Another participant suggests that charged species in the gas would accelerate in an electric field, potentially colliding with other particles and transferring energy to excite them.
  • A participant raises the idea of needing to charge the gas before passing it through the conductive fluid, noting that a current would flow through the fluid.
  • One participant discusses the principle behind gas lights, where electrons escape from an electrode and collide with gas molecules to produce light, suggesting that a similar mechanism could apply to bubbles.
  • There is speculation that a current of charged particles entering the bubble could excite the gas, although concerns are raised about the current preferring paths of least resistance.
  • Another participant expresses enthusiasm for the idea of making bubbles glow, contemplating the novelty of such a phenomenon.
  • A later reply mentions that the thickness of the fluid could add an interesting dimension to the experiment.

Areas of Agreement / Disagreement

Participants express various hypotheses and ideas, but there is no consensus on the outcome or feasibility of the proposed experiment. Multiple competing views and uncertainties remain regarding the excitation of gas in bubbles by an electric field.

Contextual Notes

Participants acknowledge limitations related to the behavior of currents in fluids and the conditions under which gas excitation might occur, but these aspects remain unresolved.

Bishop
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Does anyone know if an electric field passing through a column of conductive fluid would excite the gas on the perimeter of a bubble in that fluid, if the gas were prone to be excited?
 
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All I know is that if there are charged species in the gas, then those charged species will acellerate in the pressence of an electric field. When those charged particles have a collision with other particles (if it have enough energy), they can transfer energy and exite the gas particle. So, to my knowledge, gas can be exited, if you have a current flowing between the potential diference that is creating the electric field.
 
Do you mean I would have to charge the gas before I passed it through the
conductive fluid?

There would be a current running from
one end of the channel to the other,
through the fluid.
 
It is an interesting experiment. I really doesn't know the outcome of it.

I believe some gas lights works on this principle. You have a tube filled with gas, and two electrodes at each end with a potential difference. Some electrons will escape the negative electrode, and will be acellerated. The collission of those electrons with the gas molecules, will exite it, and then produce light. In this case, the gas wasn't charged.

So what I'm saying is, that if a current of charged particles enters the bubble, and the kinetic energy of these particles is enough to exite the particles, then it will do it. The problem here is that a current of any fluid (in this case charged particles) will prefer to go through the path of least resistance. So my guess is that little current will go through the bubbles, but it will be enough to exite them, and you will start to see the bubbles glow (if the delta energy of the ground state to exited state falls in the visible spectra).
 
yeah, that was the idea.. to get them
to glow on the outside.. I didn't
expect it to get the whole bubble
going.

Wouldn't that make a cool lamp?

Sometimes, I have the strangest ideas.
 
Oh, especially interesting might be a thick
fluid.
 

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