Inventor of the magnetic tape that helped change the way sound was recorded and played back.
His work on the magnetic tape machine was based on earlier research by his countrymen.
His patented magnetic tape with oxide was used in the world's first working tape recorder, the Magnetophon K1.
He had five siblings, one of whom later immigrated to the U.S.
His magnetic tape was in great demand almost immediately. According to one popular story, even Allied General Dwight Eisenhower wanted to use the superior German tape.