'In 1698 this noted English astronomer went to sea for 2 years to study magnetic declination'
Edmond Halley
THE 1690s: In 1698 this noted English astronomer went to sea for 2 years to study magnetic declination
In 1698 this noted English astronomer went to sea for 2 years to study magnetic declination
In 1698 this noted English astronomer went to sea for 2 years to study magnetic declination
THE 1690s
Edmond Halley
THE 1690s