Iron rich minerals in rock pointed in one direction the switch to the exact opposite direction. I'd say that what supports this idea is that Earth's magnetic field goes through pole reversals.<span>
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Power = voltage(V) * current(I)
= 120 * 0.5
Power = 60 watts
Force = mass × acceleration = kg × m/s^2 = Newton
The circular lines you see on the chart are isobars, which join areas of the same barometric pressure.
