Mathematician:Johannes Kepler

Mathematician
German mathematician and astronomer best known nowadays for Kepler's Laws of Planetary Motion.

Inherited the papers of and spent many years analysing his observations, looking for patterns.

His most significant contribution to scientific thought was his deduction that the orbits of the planets are elliptical.

Also pre-empted the methods of integral calculus to find the volume of a solid of revolution by slicing it into thin disks, calculating the volume of each, and then adding those volumes together.

From an early age accepted the concept of the heliocentric universe of rather than the geocentric one of.

Nationality
German

History

 * Born: 27 Dec 1571, Weil der Stadt, Württemberg, Holy Roman Empire (now Germany)
 * 1589: Studied mathematics at the University of Tübingen under
 * 1591: Received Master's degree
 * 1594: Obtained position as lecturer in mathematics and astronomy in the Protestant seminary in Graz.
 * 1596: Wrote to and became his assistant. Spent years analysing the orbit of Mars.
 * 1611: Kepler's son and wife died. Political changes exiled him from Prague.
 * 1613: Remarried
 * Died: 15 Nov 1630, Regensburg (now in Germany)

Theorems

 * Kepler's Laws of Planetary Motion
 * Kepler's Explanation for Spacing of Planets

Books and Papers

 * 1596: (The Sacred Mystery of the Cosmos)
 * 1601: De Fundamentis Astrologiae Certioribus (Concerning the More Certain Fundamentals of Astrology)
 * 1604: Astronomiae Pars Optica (The Optical Part of Astronomy)
 * 1604: De Stella Nova in Pede Serpentarii (On the New Star in Ophiuchus's Foot)
 * 1609: (New Astronomy) (in which Kepler's First and Second Laws of Planetary Motion appeared)
 * 1610: Tertius Interveniens (Third-party Interventions)
 * 1610: Dissertatio cum Nuncio Sidereo (Conversation with the Starry Messenger)
 * 1611: Dioptrice
 * 1611: De Nive Sexangula (On the Six-Cornered Snowflake)
 * 1613: De Vero Anno, quo Aeternus Dei Filius Humanam Naturam in Utero Benedictae Virginis Mariae Assumpsit
 * 1615: Eclogae Chronicae (published with Dissertatio cum Nuncio Sidereo)
 * 1615: Nova Stereometria Doliorum Vinariorum (New Stereometry of Wine Barrels) (in which the techniques of integral calculus were foreshadowed)
 * 1618-1621: Epitome Astronomiae Copernicanae (Epitome of Copernican Astronomy) (three parts)
 * 1619: Harmonices Mundi (Harmonies of the Worlds) (in which Kepler's Third Law of Planetary Motion appeared)
 * 1621: Mysterium Cosmographicum (The Sacred Mystery of the Cosmos) (2nd Edition)
 * 1627: Tabulae Rudolphinae (Rudolphine Tables)
 * 1634: Somnium (The Dream)

Notable Quotes

 * God lives in the details.