Photograph of Chicago native and Illinois tech alumnus Marvin Camras, who created an innovative magnetic recording head during his... Show morePhotograph of Chicago native and Illinois tech alumnus Marvin Camras, who created an innovative magnetic recording head during his undergraduate years that improved sound quality by impressing a recording symmetrically on a wire by the gap of air between the wire and the head. His research led to developments that underlie many modern recording and communication techniques. Date of photograph is unknown. Date range listed is approximate. Show less