KelvinWaterDropper_01

8/18/2019 KelvinWaterDropper_01

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Kelvin Water Dropper

Electricity from Water and Gravity


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Kelvin Water Dropper

On 19 June 1867, sir W. Thomson

(later known as lord Kelvin)

resented the aer !On a "el#$a%tin& 'aratus #or multilin&

and maintainin& le%tri% *har&es


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Basic Principle

ven thou&h water has no overall ele%tri%

%har&e, it is #ull o# mova+le ele%tri% %har&es

- and O-/ ions.

These ions are transorted + the drolets,and theoreti%all ea%h 0ar will there+

%olle%t an eual amount o# ositive and

ne&ative %har&es

in time a sli&ht im+alan%e in the %har&e

distri+ution ma o%%ur


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Basic Principle

2et us assume that at some moment the

ri&ht 0ar is sli&htl ositivel %har&ed. 's

the ri&ht 0ar is dire%tl %onne%ted to the

le#t indu%tion rin&, this ri&ht indu%tion rin&

will then also +e sli&htl ositivel%har&ed.

Water drolet #allin& throu&h ri&ht

indu%tion will +e olarised ositivel and

thus ri&ht 0ar will +e%ome more ositivel

%har&ed.This makes le#t indu%tion rin& more

ositive and in%reased the ne&ative

olari3ation o# water in le#t stream.


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Physics behind Induction


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4elation to ele%tri%al networks

Kelvin alread roved that i# losses are not si&ni#i%ant, %har&e will

+uild u e5onentiall.

*har&e +uild u in tar&et 0ars is thus analo&ous to %har&in& o#

%aa%itor %onne%ted to a volta&e sour%e.

rolets that %arr %har&es #rom the 0et ti to the tar&et, %an +e

%omared to the #low %urrent.

ndu%tion o# %har&e %an +e modelled as a #ield e##e%t transistor (T)

in the sstem

t is imortant that the re%eivin& tar&ets are su##i%ientl a+le to

reserve their %har&e.The e5tend + whi%h the tar&ets are insulated

#rom the &round is modelled usin& a resistor 4 2 4 & .


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Schematic Representation


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Circuit Diaram


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Current!"oltae Calculations


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Current!"oltae Calculations


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