Johannes Kepler 15711630

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Johannes Kepler (1571-1630)

• Since we astronomers are priests of the highest
  God in regard to the book of nature, it befits us
  to be thoughtful, not of the glory of our minds,
  but rather, above all else, of the glory of God.

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Fast facts

• Kepler was born and raised in Germany.
• He went to college at the University of Tübingen.
• He intended to become an ordained minister, but
  he had no money to support himself through school
  so he worked in the field of mathematics.

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Fast facts

• He taught math at the University of Graz in
  Austria.
• He left due to religious persecution and went to
  Prague.
• Johannes became an astronomer named Tycho
  Brahes assitant.

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Accomplishments

• After Tycho Brahes death, Kepler finished his
  planetary tables. Kepler was able to prove the
  heliocentric theory right and Tycho Brahe wrong.
• Kepler also came up with the three laws of
  planetary motion.
• He wrote a book called, The Cosmographic
  Mystery, along with many hymns, poems, and the
  first science fiction novel entitled, The
  Dream.

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Accomplishments

• Kepler invented an influential pre-calculus and a
  variation of the logarithm.
• He examined the applications of math in optics
  and he also studied the telescope in great detail.

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Three Laws of Planetary Motion

• First Law The orbit of a planet traces out the
  path of an ellipse with the sun at one of its two
  foci.

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Three Laws of Planetary Motion

• Second Law A planet changes its speed according
  to its distance from the sun and the line joining
  the planet to the sun sweeps out equal areas in
  equal times.

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Three Laws of Planetary Motion

• Third Law The squares of the periods of the
  planets are proportional to the cubes of their
  semimajor axes
• Ta2 / Tb2 Ra3 / Rb3
• The first cosmological model (see right)

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Personal Life

• Kepler had 5 children, 3 of which died during
  infancy, with his first wife, named Barbara
  Müller. They did not have a good relationship.
• With his second wife, an orphan named Susanna
  Reuttinger, he had 7 children, 2 of which
  survived to adulthood.
• Kepler died of a severe cold, possibly pneumonia,
  after going on a trip to seek the 50,000 dollars
  that the state owed him. They still owed it to
  him when he died.

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What does he believe?

• Kepler was an extremely strong Christian who
  grew up in the Lutheran church. He was one of
  the first people to believe in and prove the
  existence of a young earth.
• He was very passionate about both God and
  science. One biographer sums it up like this,
  It penetrates his entire creativity it is this
  feeling for religion which above all lends us
  the special warmth which we experience with such
  pleasure when reading Keplers theological and
  scientific studiesat every opportunity the name
  of God crosses his lips.

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What does he believe?

• Unlike many other astronomers, Kepler did not
  believe in such mystical things as horoscopes.
  He was, however, forced to write them in order to
  save himself from starvation.
• The same biographer states that Keplers view of
  mans chief purpose in life is as follows, As
  the bird is created to sing, so, according to his
  convictions, is man created for his pleasure both
  in contemplating the magnificence of nature and
  in inquiring into her secrets, not for the
  purpose of extracting practical uses but to
  arrive at a deeper knowledge of the creator.

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The End!

• Created by Cara Dobrovodsky