He then returned to Imperial College in 1971, where he produced a theory of field-line resonances in the Earth's magnetosphere which now underpins most work on geomagnetic pulsations.
There he produced a theory of field-line resonances in the Earth's magnetosphere which now underpins most work on geomagnetic pulsations. He then returned to Imperial College in 1971.
He then returned to Imperial College in 1971. There he produced a theory of field-line resonances in the Earth's magnetosphere which now underpins most work on geomagnetic pulsations.
He then returned to Imperial College in 1971. There he produced a theory of field-line resonances in the Earth's magnetosphere which now underpins most work on geomagnetic pulsations.