Richter scale

Sal explains the basics of the Richter scale (Moment magnitude scale) and uses this to compare the magnitude of 4 famous earthquakes.

Benford's law (with Vi Hart, 2 of 2)

Vi Hart visits Khan Academy and talks about the mysteries of Benford's Law with Sal

Current time: 0:00Total duration: 8:05

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# Benford's law (with Vi Hart, 1 of 2)

Vi Hart visits Khan Academy and talks about the mysteries of Benford's Law with Sal. Created by Sal Khan.