This year marks the 300th anniversary of George Graham's measurement of the daily declination of the Earth’s magnetic field and the 190th anniversary of Carl Friedrich Gauss' measurement of the Earth's magnetic field intensity.
Join us around the world in commemorating the milestones by measuring the Earth’s magnetic field at your location!
How on EARTH
do we measure
Your submitted values will be updated on our map, along with the values from your friends all over the world!
GET TO KNOW ABOUT
THE EARTH'S MAGNETIC FIELD
It has been 300 years since George Graham first measured the variation of magnetic declination!
Did you know that the Earth behaves like a giant magnet?
Find out more about the Earth's magnetic field and how it was measured!
Click on the images and text to find out more about these remarkable people and their works!
Carl Friedrich Gauss
measured and documented the Earth's magnetic field at your location on the globe at MagnetiSiM 2022.