Electricity is a poer that can be inverted in any form.
main thing is that you want to invert that in witch form.
for the phisical output you can change that one through 
transducer.
like pizo electric transducer.

to invert electricity we an use a rectifier.

michael faraday

THOMAS ALVA EDISON

Thomas Elva Edison(U.S.A.) IN 1982

About 600 B.C.
Greek philosopher and mathematician Thales von Milet 
discovers the frictional electricity of amber.

Well, no one really "invented" electricity, but you can ask 
who discovered it. While people have known about the 
powerful effects of lightning for thousands of years, the 
first person to discover that lightning was a naturally 
occuring form of electricity was Benjamin Franklin. In 
1752, during a dangerous electrical storm, Franklin flew a 
kite that had a metal key at the bottom of the string. When 
a bolt of lightning hit the kite, a spark of electricity 
flew from the key! From this experiment, Franklin invented 
the lightning rod, which attracts lightning and draws it 
into the ground. This saves many buildings from burning 
down.

v. r. kumar who born in uganda in 1975 he invented it soon 
after he passed kg1. his contribution to electricity is 
phenominal . he was nominated for nobal also for this but 
edison got for his cfl bulb invention anyway he is soon 
going to be awarded by bharat ratna. currently this great 
inventor is working under chain singh (madhiwale)