Lighting bulbs with magnetic fields

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SUMMARY

The discussion centers on the phenomenon of lighting fluorescent bulbs using magnetic fields, as demonstrated in a Gizmodo article. The key mechanism involves alternating current in power lines generating a changing magnetic field, which can induce an electromotive force (emf) across the bulb. Participants speculate on the necessity of permission from power companies for such installations and debate whether the electric field (E-field) gradient plays a more significant role than the magnetic field itself in illuminating the bulbs.

PREREQUISITES
  • Understanding of electromagnetic induction principles
  • Familiarity with alternating current (AC) and its effects
  • Knowledge of fluorescent bulb operation and components
  • Basic concepts of electric and magnetic fields
NEXT STEPS
  • Research the principles of electromagnetic induction in detail
  • Explore the effects of alternating current on magnetic fields
  • Investigate the operation and design of fluorescent bulbs
  • Learn about electric field gradients and their applications in lighting
USEFUL FOR

This discussion is beneficial for electrical engineers, physicists, and hobbyists interested in innovative lighting solutions and the interplay between electric and magnetic fields.

rohanprabhu
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This guy seems to have done something like that: http://gizmodo.com/361390/1301-florescent-bulbs-lit-solely-by-magnetic-fields

Now.. what i was thinking is that.. how could he have done that? The power lines carry alternating current all right and it's a changing current, so it produces a changing magnetic field near the ends of a given lamp.. but will that be enough to create an emf across the tube that can give out so much light?
 
Physics news on Phys.org
Apparently it is. I wonder if he got permission from the power company to do that "art"...
 
Even though it says magnetic fields, I think it's the E-field that actually doing it. The gradient from the power lines above to the ground below.
 

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