
Russia 🇷🇺 @Russia
📺 #OTD in 1869 Boris Rosing, #Russian #scientist and #inventor in the field of #television, was born. While others had tried to develop a mechanical version of television, Rosing's system employed a mechanical #camera device, but used an early cathode ray tube as a receiver. https://t.co/cu8DMkqIpa — PolitiTweet.org