What are “magnetic anomalies” and how do they originate?

One of the key discoveries that led to the widespread acceptance of sea-floor spreading (and ultimately plate tectonics) was the pattern of “magnetic anomalies” in the oceanic crust. Shown below is a map of Earth, taken from a publication by Muller et al. (1997) cited below in which the pattern of magnetic anomalies is indicated […]

What is the magnitude and direction of the magnetic force on the electron?

Magnetic field and current related questions An initially uncharged capacitor with a capacitance of C= 00 pF is connected in series with resistor with a resistance of R= 4.5 kn. If this series combination of circuit elements is attached to an ideal battery with an emf of f= 450 V by means of a switch […]