Philosophy 167: Class 5 - Part 6 - Letters on Sunspots: the Phases of Venus, and the Demise of Ptolemaic Astronomy.

Smith, George E. (George Edwin), 1938-

2014-09-30

Description
  • Synopsis: Discusses Galileo's Letters on Sunspots, in which he publishes his observations of sunspots and the phases of Venus, implying that Venus orbits the Sun.

    Opening line: "In the letters on sunspots, there are various points I'll come back to the others."

    Duration: 12:34 minutes.

    Segment: Class 5, Part 6.
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