are humans a power source

[mauy]

im just starting science and we were doing an experiment measuring the voltage from fruit with an voltmeter we were using

copper and zinc

to stick in the fruit,

 

 

in a series circuit the v-meter only had 2 wires connected one with the zinc in the negative and copper in positive i held the copper in my right hand and the zinc in my left and i got a reading of 0.62v my friend got 0.58v and another got 0.59v

 

i dont under stand how this works so what im seeing here is if you were to connect maby 3-5 people in this circuit you could light a small bulb

 

if so then that means we could charge some thing or make something big work with a lot of people conected

 

 

p.s i found that it was highest at my hands, elbow was 0.27v face was 0.24

diddent try the feet

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please help me

[swansont]

The copper and the zinc are the key here; that's where the chemical reactions are taking place that give you the electric potential. This is called a voltaic or galvanic cell; you can use different kinds of fruit or a potato as the electrolytic bridge to complete the circuit.

 

http://en.wikipedia.org/wiki/Galvanic_cell

http://en.wikipedia.org/wiki/Lemon_battery

[mauy]

The copper and the zinc are the key here; that's where the chemical reactions are taking place that give you the electric potential. This is called a voltaic or galvanic cell; you can use different kinds of fruit or a potato as the electrolytic bridge to complete the circuit.

 

http://en.wikipedia.org/wiki/Galvanic_cell

http://en.wikipedia.org/wiki/Lemon_battery

 

 

i was meaning the power coming from me ( it also works if i use my hands with out the copper or zinc but i get a smaller reading 0.06v) ( just using the metal that comes out ( sorry i don't know what kind it is but its that same at both points if that helps)

[swansont]

The power doesn't come from you, it comes from the reactions with the metal.

[Mr Skeptic]

Yeah, and an acid would do an even better job of helping the metals react.