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Alessandro Volta Jean Christian Ørsted

 
    

   



Sir Humphry Davy


   
   
 
Penzance (Cornwall) 17.12.1778-Geneva 29.5.1829
1808 voltaic Arc 
 
 

  


 
In 1813 having to disposition in just the laboratory a composed battery from an able hundred of batteries to distribute one current of conspicuous value, Davy produced the illuminant arc. In order to produce elettrofori content the arc taken advantage of a coal capsule, the invention aroused great wonder to presentation near knows  it it of chemistry  of the Real  Institute  of  London, since    the produced  light  was  much advanced one  to  the normal lamps  to   combustion  then commonly used.  The invention did not have immediate practical application since the duration was short and was necessary most expensive batteries. For young we remind that this job is the prelude to the birth of the cinematographic floodlights