Jon Mcleod wrote:
> If I drive an A/C voltage into two parallel wires taped to either side
> of a magnolia leaf 4cm apart, how do I calculate/measure the electrical
> field strength?
>
> Can I just put JFET probes on either side of the leaf, 1cm apart, and
> measure the voltage between the probes?
>
> How would I calculate it the field strength? 100V p-p signal driven
> into the wires is a 25V/cm field strength?
At 100 volt and a solid contact your leaf would not last
very long , it would start smoking.
If it does not smoke, you cannot calculate the field
strength distribution, because of the veins in the leaf
local leaf resistance will vary all over the place, and
be unpredictable.
A measuring probe would have to have a very small tip,
which would have to be ****elded for all but the last .2 mm.
A fet probe would not really be needed, the leaf has a rather
low resistance, just use a very sharp needle tip.
No need for 100 volt, voltmeters are happy to measure
millivolts, so a supply voltage of ~5 volt is oke.
Dont wait to long with your measurements, because the connections
will degrade due to electro-chemical reactions at the contact places.
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