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Kepler, Johannes Line breaks: Jo|han¦nes Kep¦ler
Pronunciation: /ˈkɛplə/

Definition of Kepler, Johannes in English:

( 1571–1630), German astronomer. His analysis of Tycho Brahe’s planetary observations led him to discover the three laws governing orbital motion.



Pronunciation: /kɛˈplɪrɪən/
Example sentences
  • Examples of refracting afocal systems include an ordinary Keplerian telescope, a Galilean telescope, and a lens-erecting telescope.
  • Astronomical photographs of the familiar planets of our old solar system perpetrate a comfortable lie: planets are giant round spheres that follow predictable Keplerian orbits around a common yellow dwarf star.
  • The Ptolemaic theory was well and truly gone, and the Keplerian version of heliocentrism was well and truly established.

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