During her time at Sylvania she established their first phosphor pilot plants .
Martha Thomas began her professional career in 1945 at Sylvania Electric Products , where she became the Head of the Phosphor Research and Development Section in 1970 .
During Martha Thomas ' time at Sylvania Martha Thomas established their first phosphor pilot plants .
Martha Thomas began her professional career in 1945 at Sylvania Electric Products , where she became the Head of the Phosphor Research and Development Section in 1970 .