No free photograph
Henry Gellibrand
English mathematician (1597-1637) · Academics · Died at 39
Henry Gellibrand (1597-1637) was an English mathematician. He is known for his work on the Earth's magnetic field. He discovered that magnetic declination - the angle of dip of a compass needle - is not constant but changes over time.
Henry Gellibrand is read about 2 times a day, in 12 languages.
A typical day, 30 days to 24 June 2026
The middle day of the days counted, so one week of news cannot move it. The line under it is the last 60 days, one point a day.
Something wrong?Also in Français
About this person
He announced this in 1635, relying on previous observations by others, which had not yet been correctly interpreted.
Category
Academics
Type
Academic
Status
Deceased
Dates
Lived 1597 to 1637 · aged 39
