ocr: B THOMAS EDISON He became interestedin L 1847-1931 telegraphy, and started to invent and patent small improvements to * . F the telegraph system. In 1875, Edison set up a workshop in New H Jersey. One of the many inventions to come outof this venture was the phonograph, or record player. The K sound was recorded by a steel stylus L - and a diaphragm onto a tinfoil- M a N. covered cylinder. Not having much interest 111 music, Edison believed the phonograph S main use would HOMAS ALVA EDISON was be asanoffice dictating machine. R bom in Ohio. He had a basic Among Edison's other inventions educat ...
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