Mathematician:Democritus

Mathematician
Democritus (Greek: Δημόκριτος, Dēmokritos, chosen of the people) was a Greek mathematician and philosopher, most famous for his atomic theory of the universe.

Also cited by as having discovered the formula for the volume of a cone as being one third the volume of a cylinder of the same base and height, and the similar formula for the volume of a pyramid. He was not the first to suggest the atomic theory -- both and  had come up with the idea earlier -- but Democritus made a more systematic and detailed vision.

Nationality
Greek

History

 * Born: c. 460 BCE, Abdera, Thrace, Greece
 * Died: c. 370 BCE

Theorems and Definitions

 * Volume of Cone is Third of Cylinder on Same Base and of Same Height
 * Prism on Triangular Base divided into Three Equal Tetrahedra

Writings
All of these works have been lost, except for a few hundred fragments preserved as isolated sentences or paragraphs from quotes from the writings of others.


 * Ethics
 * Pythagoras
 * On the Disposition of the Wise Man
 * On the Things in Hades
 * Tritogenia
 * On Manliness or On Virtue
 * The Horn of Amaltheia
 * On Contentment
 * Ethical Commentaries


 * Natural science
 * The Great World-Ordering (may have been written by )
 * Cosmography
 * On the Planets
 * On Nature
 * On the Nature of Man or On Flesh (two books)
 * On the Mind
 * On the Senses
 * On Flavours
 * On Colours
 * On Different Shapes
 * On Changing Shape
 * Buttresses
 * On Images
 * On Logic (three books)


 * Nature
 * Heavenly Causes
 * Atmospheric Causes
 * Terrestrial Causes
 * Causes Concerned with Fire and Things in Fire
 * Causes Concerned with Sounds
 * Causes Concerned with Seeds and Plants and Fruits
 * Causes Concerned with Animals (three books)
 * Miscellaneous Causes
 * On Magnets


 * Mathematics
 * On Different Angles or On the Contact of a Circle and a Sphere
 * On Geometry
 * Geometry
 * Numbers
 * On Irrational Lines and Solids (two books)
 * Planispheres
 * On the Great Year or Astronomy (a calendar)
 * Contest of the Waterclock
 * Description of the Heavens
 * Geography
 * Description of the Poles
 * Description of Rays of Light


 * Literature
 * On the Rhythms and Harmony
 * On Poetry
 * On the Beauty of Verses
 * On Euphonious and Harsh-sounding Letters
 * On Homer
 * On Song
 * On Verbs
 * Names


 * Technical works
 * Prognosis
 * On Diet
 * Medical Judgment
 * Causes Concerning Appropriate and Inappropriate Occasions
 * On Farming
 * On Painting
 * Tactics
 * Fighting in Armor


 * Commentaries
 * On the Sacred Writings of Babylon
 * On Those in Meroe
 * Circumnavigation of the Ocean
 * On History
 * Chaldaean Account
 * Phrygian Account
 * On Fever and Coughing Sicknesses
 * Legal Causes
 * Problems

Notable Quotes

 * I would rather discover one cause than gain the kingdom of Persia.