# How to measure the EMF in the air and log it into a csv file? [closed]

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:
3. Is it right to say the energy I can gain in the best case is: $$Energy = Force*distance = q(V\times B) \cdot distance$$

## closed as not a real question by Leon Heller, Anindo Ghosh, Dave Tweed♦, Keelan, Olin LathropMay 5 '13 at 12:51

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