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GALILEO GALILEI

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Deposed Aristotelian view of cosmos. Showed Platonic world view incorrect: Blemished sun ... Sun-centered cosmos. Argued observation must take precedent over theory ... – PowerPoint PPT presentation

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Title: GALILEO GALILEI


1
GALILEO GALILEI
  • a brief biographical sketch by
  • Carl J. Wenning

2
Galileo Galilei
  • Italian astronomer and physicist
  • Born Pisa, February 15, 1564
  • Died Arcetri (near Florence), January 8, 1642.

3
Most notable accomplishments
  • Invention of the telescope
  • Astronomical observations used to supplant
    Ptolemaic world system
  • First empirical physicist

4
Trouble with the Church
  • Deposed Aristotelian view of cosmos
  • Showed Platonic world view incorrect
  • Blemished sun
  • Cratered moon
  • Sun-centered cosmos
  • Argued observation must take precedent over
    theory
  • Got in trouble for publishing Dialogue of Two
    Chief World Systems

5
Overlooked Contributions to PHY
  • Laws of motion
  • 1st law (dual incline)
  • 2nd law (motion w/out force)
  • The distance that an object falls goes as a
    function of t2
  • Vector addition
  • Law of simple pendulums
  • Thermometry
  • Empiricism

6
Empiricism
  • Observational evidence must be given priority
    over theoretical constructs event if it
    contradicts common sense perceptions
  • Heavier objects fall faster than lighter objects.
  • Objects (such as planets and arrows) need a
    constant force to keep them in motion.
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