Storm in a Teacup: The Physics of Everyday Life(93)

“Cathode ray tube,” University of Oxford Department of Physics, http://www2.physics.ox.ac.uk/accelerate/resources/demonstrations/cathode-ray-tube “Non-European compasses,” Royal Museums Greenwich, http://www.rmg.co.uk/explore/sea-and-ships/facts/ships-and-seafarers/the-magnetic-compass Wynne Parry, “Earth’s magnetic field shifts, forcing airport runway change,” LiveScience, 7 Jan. 2011, http://www.livescience.com/9231-earths-magnetic-field-shifts-forcing-airport-runway-change.html “Wandering of the geomagnetic poles,” National Centers for Environmental Information, National Oceanic and Atmospheric Administration, http://www.ngdc.noaa.gov/geomag/GeomagneticPoles.shtml “Swarm reveals Earth’s changing magnetism,” European Space Agency, June 19, 2014, http://www.esa.int/Our_Activities/Observing_the_Earth/Swarm/Swarm_reveals_Earth_s_changing_magnetism David P. Stern, “The Great Magnet, the Earth,” Nov. 20, 2003, http://www-spof.gsfc.nasa.gov/earthmag/demagint.htm

“Drummond Hoyle Matthews,” https://www.e-education.psu.edu/earth520/content/l2_p11.html

F. J. Vine and D. H. Matthews, “Magnetic anomalies over oceanic ridges,” Nature, 199, 1963, pp. 947–9

Kenneth Chang, “How plate tectonics became accepted science,” New York Times, Jan. 15, 2011