Magnetic field detectors from the first commercial magnetocephalography scanner (MEG).
1990s
1990s
1990-1991
2000-100 BCE
1988
1989
1993
1992
2000-100
1993
1990
1989
1990-1991
1989
1988-1993
1990s
1990-96
1989
1990
1989
1839 (original); circa 1988 (replica)
1992
1988
4000-2001 BCE
1993
1992
1990
1988
1988-1992
1988
1992
1988
1988
1990
1992
1992
1988
1988
1988
1988
1988
1993
1990
1992
1993
1988
circa 1989
1991
1991
1993
1992