Fire from a potato Real or fake???

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bushyboo

Guest
looks interesting only one way to find out
will have to try it
 

Glen

Life Member
Oct 16, 2005
618
1
61
London
I can't tell from that what the wires are made of, if differing materials it should work like a basic salt water battery, just solder on the end of 1 wire might be enough.

Also not sure if the toothpaste is doing anything electrically wise, it may just be keeping a high salt concentration in a small area
 

fishy1

Banned
Nov 29, 2007
792
0
sneck
I can't tell from that what the wires are made of, if differing materials it should work like a basic salt water battery, just solder on the end of 1 wire might be enough.

Also not sure if the toothpaste is doing anything electrically wise, it may just be keeping a high salt concentration in a small area

I believe the toothpaste was just used as a solvent for the salt, therefore making a very crude electrolyte. Getting sparks from that would be difficult though.

Not exactly fire from just a potato though, more like a fire from everything in the kitchen.
 

Tourist

Settler
Jun 15, 2007
507
1
Northants
Sorry, still stuck on the first bit!:naughty:

:D

Your browser must be broke, ;-)

I have seen spud powered clocks and low power lights using a series of spud batteries. From O level General Science I remember you have to use two different metals, one becoming positively charged the other negative, this allows a flow of electricity between the two. A copper coin and a silver coin are favourite then attach wires to each one.

I think by adding the extra salt he turbo's the spud but I have'nt a clue what might be in the toothpaste (if anything) other than using it as a base to hold in the salt.

A little project for tomorrow methinks.
 

Glen

Life Member
Oct 16, 2005
618
1
61
London
As a basic potato or salt water battery I wouldn't expect it to produce enough voltage to spark, though if you put a whole bunch in series it might.

What makes me think it's likely to be fake is the waiting 5 minutes being a good place to cut and stick a batterey inside. My feeling was that if you wanted to show it as real but needed the cut to keep a reasonable time frame, it would be better to put the wires in from the sides and not have the top half of the potato on.
 

gregorach

Bushcrafter (boy, I've got a lot to say!)
Sep 15, 2005
3,723
28
51
Edinburgh
As a basic potato or salt water battery I wouldn't expect it to produce enough voltage to spark, though if you put a whole bunch in series it might.

That's exactly what I was thinking... Plus it looks to me like both wires are copper, so it wouldn't work anyway. Could be wrong though...
 

Tourist

Settler
Jun 15, 2007
507
1
Northants
Just tried it.............did'nt work.

Using a multimeter I found that the spud produced .2v and enhanced with salt and toothpaste it produced .5v

 

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