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2 years ago

11

How long have scientists been recording the strength of the Earth's magnetic field?

2 answers:

rosijanka [135]2 years ago

7 0

Since 1840 we have been accurately enough to tell how the magnetic feild works, every 300,000 years it flips that hasn't occurred for 800,000 years though, hope this helps.<span />

jenyasd209 [6]2 years ago

7 0

Explanation:

The strength of the magnetic field was first measured in 1835 by Carl Friedrich Gauss and has been measured numerous times since then, showing a relative decay of 10% in the last 150 years. Currently, satellites use magnetometers to probe the three-dimensional structure of the Earth's magnetic field.

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