Russia 🇷🇺 @Russia
⚡#OTD in 1802 #Russian experimental physicist, self-taught electrical technician Vasily Petrov discovered the electric arc effect. He saw its potential in lighting, melting metals for smelting & welding. By late 1880s the technology was ready for industrial usage #FamousRussians https://t.co/jkC8lihnLv — PolitiTweet.org