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Please Please Help Me Understand This ...

Discussion in 'General Electronics Discussion' started by seza, Apr 5, 2017.

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  1. seza


    Nov 6, 2015
    Hi All,

    Great forum, thank you to all who made it possible,

    I conducted a simple experiment but I not able to understand/explain the results,

    In large bowl full of material composed mostly of: FINE SAND + WATER + SALT(natural unrefined) probably
    in equal parts which made it look like a paste (see pic)
    I placed two electrodes: (+) GRAPHITE ROD and (-) MAGNESIUM at various distance (D) from each other,
    the multimeter reading across the electrodes was showing stable 1.5V no matter the distance (D)!!??

    The next experiment - the same setup - I only covered up the electrodes with plastic wrap as in fully isolating each electrodes from the electrolyte (the material), I was surprised to get nearly enough the same reading (about 1.42V)!!??

    Can some please explain - preferably with some basic formulas what is happening here:

    1. what do I have here: a BATTERY? a CAPACITOR? a GALVANIC BATTERY?
    2. why is the distance between the electrodes not making any differences?
    3. If this is a BATTERY of some sort - is there a theoretical way to estimate the energy stored therein?

    Many thanks in advance.

    Attached Files:

  2. (*steve*)

    (*steve*) ¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd Moderator

    Jan 21, 2010
    1. Google "battery"

    2. Plastic film is not impervious.
  3. Audioguru


    Sep 24, 2016
    Your do-it-yourself battery will produce very low power unless it is HUGE.
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