All articles tagged with #electromagnetism
The magnetic constant, also known as the permeability of free space, is a fundamental physics constant that determines the strength of magnetic fields and is essential in the functioning of devices like motors, generators, and speakers, playing a crucial role in electromagnetism and our understanding of magnetic phenomena.
Earth's magnetic north pole has been moving eastward at an accelerating pace, shifting from Canada towards Siberia due to changes in the flow of liquid metal in Earth's outer core. This movement, driven by the geodynamo system, has increased from 15 kilometers per year to 50-60 kilometers per year since the 1990s. While the shift has minimal immediate impact on daily life, it requires adjustments in navigation systems like GPS. Scientists are monitoring these changes, as Earth's magnetic poles have historically swapped positions every 300,000 years, though the last swap occurred 780,000 years ago.