On this day, 198 years ago, March 5, 1827 (February 8, 1827, the Italian physicist and inventor of the battery Volt passed away. Italian physicist Volta was born on February 18, 1745 and died on March 5, 1827. His main contribution was the invention of the battery. In 1775, Volt was interested in electricity and invented an instrument to generate static electricity (electricity board). Methane gas was discovered and separated in 1778, and a year later he was appointed professor of physics at the University of Pavia. In 1780, his friend Galvani discovered that two different metals produced electricity when they came into contact with the frog's muscles. In 1794, he began experiments with metals alone and found that animal tissue was not needed to generate electricity. This discovery has caused a lot of controversy about animal production and metal production. But with the first battery demonstrated in 1800, he achieved a decisive victory. In 1801, he showed the battery to Napoleon in Paris, who made him count and senator of the Kingdom of Lombardy. In 1815, the Austrian Emperor appointed him dean of the School of Philosophy at the University of Padua. The unit volt of the electromotive force that drives the current is named in his honor.