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I would like to build a device measures the EMF in air,it should be sensitive for a wide band (broadband) EMF, And I want it to be able to log into a csv file the time and amplitude of EMF (intensity). I would like to connect a gps device to it so I'll be able to calculate the velocity of my car while measuring EMF.

By the end of the day I want to measure how much power I can gain by driving around high voltage cables.

  1. Can you recommend me an EMF I can use and an Android based board I will be able to connect the EMF to and take logs?
  2. Is it possible to make a draw of the field around me something like that:enter image description here
  3. Is it right to say the energy I can gain in the best case is: $$Energy = Force*distance = q(V\times B) \cdot distance$$
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closed as not a real question by Leon Heller, Anindo Ghosh, Dave Tweed, Keelan, Olin Lathrop May 5 '13 at 12:51

It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, visit the help center. If this question can be reworded to fit the rules in the help center, please edit the question.

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You can meausure the electric field with something called a field mill. That is two electrodes that change orientation by mechanical rotation. Any static field will cause a relative change in voltage between the electrodes as they rotate thru a cycle. This device measures the field in a plane, so you need multiple to measure the 3D field vector at a location.

The rest of what you say makes little sense, particularly the part about gaining energy by driving around near high voltage cables.

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  • \$\begingroup\$ How can I use the EMF to charge a battery for example? \$\endgroup\$ – 0x90 May 5 '13 at 3:42
  • \$\begingroup\$ @0x90 - You can't. There isn't enough power there to do anything meaningful. \$\endgroup\$ – Connor Wolf May 5 '13 at 5:44
  • \$\begingroup\$ @ConnorWolf REALLY ? gizmag.com/electromagnetic-harvester/26130 \$\endgroup\$ – 0x90 May 5 '13 at 6:11
  • \$\begingroup\$ @0x90 - Yeah, it's called bullshit. Just like every other free-energy claim. \$\endgroup\$ – Connor Wolf May 5 '13 at 6:17
  • \$\begingroup\$ @ConnorWolf it isn't free energy, I want to test it, in the worst case i'll have fun \$\endgroup\$ – 0x90 May 5 '13 at 6:49

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