Sunderland-born Joseph Swan, early developer of an incandescent electric light bulb, died #OTD 1914. He demonstrated his lamp in 1879 to an audience of more than 700 at Newcastle’s Literary and Philosophical Society. - ThreadSky

groomb.bsky.social • 5 days ago

Sunderland-born Joseph Swan, early developer of an incandescent electric light bulb, died #OTD 1914. He demonstrated his lamp in 1879 to an audience of more than 700 at Newcastle’s Literary and Philosophical Society.