The power of nature that cannot be underestimated - earth battery

Test - lowercase jpg

The outer diameter of the probe domestic PA50-F small four-jaw gold-plated needle is 0.68. The total length of the needle is 16

AVX tantalum capacitor muddy NOJC227M006RWJ original spot

Insert two different metals, usually copper and zinc, into the soil and use the electrolyte in the soil to form a primary battery. A potential difference of about one volt is generated between the two metal poles.
This article is to use this simple principle to design several small works by nature, let us take a look!
The first is this lamp, dozens of sets of copper and zinc electrodes inserted in the soil constitute its energy, as long as you continue to water, LED bulbs will always illuminate for you.

Electrode of the earth battery:

Earth battery powered clock:

(Please read the PDF for details)