Magnetic field detectors from the first commercial magnetocephalography scanner (MEG).
1990s
1990s
1989
2000-100 BCE
1990
1989
1989
1990s
1989
1990-96
1989
1990
4000-2001 BCE
1990
1990
1989
1990
1990
1990
1989
circa 1990
1989
2500 BCE
1989
circa 1990
1990-95
circa 1990
1990
1989
1989
1990s
circa 1990
circa 1990
circa 1990
circa 1990
1989
1990
circa 1990s
circa 1989
circa 1990
1989
1989
1989
1990
circa 1989
circa 1989
1990
circa 1989
3000-1500
1990s
circa 1990