Some of the most sensitive methods of measuring magnetic fields use interactions of resonant light with atomic vapour. Recent developments in this vibrant field have led to improvements in ...
Earth's magnetic poles are shifting unpredictably, with rapid drifts and weakening fields raising questions about a possible future reversal and its global effects.
The discovery doesn’t rule out the existing theory, because the expected magnetic field gradients could still be present, but it means that scientists need to take a closer look. The generally ...
Where does the force come from? Electric currents and magnetic fields are closely related. If you have one, you often have (or can make) the other. The braking force in the demonstration is due to ...
The reversal could actually have a beneficial effect on Earth. The sun is on the verge of a significant event: a magnetic field reversal. The sun undergoes such a reversal every 11 years ...
That is a crucial step in comparing the full magnetic fields predicted by this theory with the ones we see in the actual universe. We can't rewind the clock to see what the universe's magnetic ...