Electrophorus was improved by an Italian physicist credited as the inventor of what?
Electrophorus: An electrophorus or electrophore is a simple manual capacitive generator used to produce electrostatic charge via the process of electrostatic induction. Electrophorus:  A first version of it was invented in 1762 by Swedish professor Johan Carl Wilcke, but Italian scientist Alessandro Volta improved and popularized the device in 1775, and is sometimes erroneously credited with its invention. Alessandro Volta: Alessandro Giuseppe Antonio Anastasio Volta (] ; 18 February 1745 – 5 March 1827) was an Italian physicist, chemist, and a pioneer of electricity and power, who is credited as the inventor of the electrical battery and the discoverer of methane.
the electrical battery