Theory Collection

Portrait of Daniele Barbaro, 1556-1562. Creator: Paolo Veronese
Portrait of Daniele Barbaro, 1556-1562

Paul Serusier, 1903. Creator: Odilon Redon
Paul Serusier, 1903

Diagram illustrating the theory of light and shade and sketches of figures, c1472-c1519 (1883)
Diagram illustrating the theory of light and shade and sketches of figures illustrating the movements of the human body, c1472-c1519 (1883). From The Literary Works of Leonardo Da Vinci, Vol

Water (Phlegmaticus), from The Four Temperaments, 1596-97 Creator: Zacharias Dolendo
Water (Phlegmaticus), from The Four Temperaments, 1596-97

Theological Thesis of Antoine Talon, 1648. Creator: Claude Mellan
Theological Thesis of Antoine Talon, 1648

Thucydides, (c460-400 BC), 1830. Creator: Unknown
Thucydides, (c460-400 BC), 1830. Thucydides (c460-400 BC) Athenian historian and general with a reputation for impartiality, evidence-gathering and analysis

Locke, (1632-1704), 1830. Creator: Unknown
Locke, (1632-1704), 1830. John Locke (1632-1704) English philosopher and physician, influential of Enlightenment thinker, commonly known as the " Father of Liberalism

Sir I. Harrington, (1611-1677), 1830. Creator: Unknown
Sir I. Harrington, (1611-1677), 1830. James Harrington (or Harington) (1611-1677) English political theorist of classical republicanism educated at Trinity College

Euler, (1707-1783), 1830. Creator: Unknown
Euler, (1707-1783), 1830. Leonhard Euler (1707-1783) Swiss mathematician, physicist, astronomer, geographer, logician and engineer. From " Biographical Illustrations", by Alfred Howard

A. Durer, (1471-1528), 1830. Creator: Unknown
A. Durer, (1471-1528), 1830. Albrecht Durer (1471-1528) painter, printmaker, and theorist of the German Renaissance. From " Biographical Illustrations", by Alfred Howard. [Thomas Tegg, R

Le Brun, (1619-1690), 1830. Creator: Unknown
Le Brun, (1619-1690), 1830. Charles Le Brun (1619-1690) French painter, physiognomist, art theorist and court painter to Louis XIV. From " Biographical Illustrations", by Alfred Howard

Chrysippus, (c279-206 BC), 1830. Creator: Unknown
Chrysippus, (c279-206 BC), 1830. Chrysippus of Soli (c279-c206 BC) Greek Stoic philosopher and writer who excelled in logic, theory of knowledge, ethics, and physics

Edmund Burke, c1760, (c1884). Creator: Unknown
Edmund Burke, c1760, (c1884). Edmund Burke (1729-1797) Anglo-Irish author, orator and liberal conservative political theorist and philosopher, educated at Trinity College Dublin

Theory of a lunar eclipse, engraving from Astronomicon, published in Venice in 1485

Theory of the orbit of Mercury, engraving from Astronomicon, published in Venice in 1485

Solar theory, engraving from Astronomicon, published in Venice in 1485

Map showing Tycho Brahes system of planetary orbits, 1660-1661. From The Celestial Atlas, or The Harmony of the Universe (Atlas coelestis seu harmonia macrocosmica) by Andreas Cellarius

Nicolaus Copernicus, Polish astronomer, (1660-1661). Artist: Andreas Cellarius
Nicolaus Copernicus, Polish astronomer, (1660-1661). Detail from a map showing the Copernican system of planetary orbits (the Planisphaerium Copernicanum )

Map showing Tycho Brahes system of planetary orbits around the Earth, 1660-1661. From The Celestial Atlas, or The Harmony of the Universe (Atlas coelestis seu harmonia macrocosmica)

Five drawings illustrating the theory of painting, c1472-c1519 (1883). Artist: Leonardo da Vinci
Five drawings illustrating the theory of painting, c1472-c1519 (1883). From The Literary Works of Leonardo Da Vinci, Vol. 1 by Jean Paul Richter, PH. DR

Drawing of a male head, illustrating the practice of painting, c1472-c1519 (1883). Artist: Leonardo da Vinci
Drawing of a male head, illustrating the practice of painting, c1472-c1519 (1883). From The Literary Works of Leonardo Da Vinci, Vol. 1 by Jean Paul Richter, PH. DR

Four drawings illustrating the practice of painting, c1472-c1519 (1883). Artist: Leonardo da Vinci
Four drawings illustrating the practice of painting, c1472-c1519 (1883). From The Literary Works of Leonardo Da Vinci, Vol. 1 by Jean Paul Richter, PH. DR

Five drawings illustrating the elements of landscape painting, c1472-c1519 (1883). Artist: Leonardo da Vinci
Five drawings illustrating the elements of landscape painting, c1472-c1519 (1883). From The Literary Works of Leonardo Da Vinci, Vol. 1 by Jean Paul Richter, PH. DR

Four drawings illustrating the theory of the movements of the human figure, c1472-c1519 (1883). From The Literary Works of Leonardo Da Vinci, Vol. 1 by Jean Paul Richter, PH. DR

Drawings showing the movements of the human figure and warriors fighting, c1472-c1519 (1883). Artist: Leonardo da Vinci
Drawing in red chalk illustrating the theory of the movements of the human figure and sketch in pen and ink of warriors fighting, c1472-c1519 (1883)

Sketches illustrating the theory of the proportions of the human figure, c1472-c1519 (1883). Artist: Leonardo da Vinci
Sketches illustrating the theory of the proportions of the human figure, c1472-c1519 (1883). From The Literary Works of Leonardo Da Vinci, Vol. 1 by Jean Paul Richter, PH. DR

Drawing illustrating the theory of the proportions of the human figure, c1472-c1519 (1883). Artist: Leonardo da Vinci
Drawing illustrating the theory of the proportions of the human figure, c1472-c1519 (1883). From The Literary Works of Leonardo Da Vinci, Vol. 1 by Jean Paul Richter, PH. DR

Drawing illustrating the theory of the proportions of the human figure, c1472-c1519 (1883). Artist: Leonardo da Vinci
Drawing illustrating the theory of the proportions of the human figure, c1472-c1519 (1883). From The Literary Works of Leonardo Da Vinci, Vol. 1 by Jean Paul Richter, PH. DR

Five drawings illustrating the theory of the proportions of the human figure, c1472-c1519 (1883). From The Literary Works of Leonardo Da Vinci, Vol. 1 by Jean Paul Richter, PH. DR

Five diagrams illustrating the theory of light and shade, c1472-c1519 (1883). Artist: Leonardo da Vinci
Five diagrams illustrating the theory of light and shade, c1472-c1519 (1883). From The Literary Works of Leonardo Da Vinci, Vol. 1 by Jean Paul Richter, PH. DR

Diagrams illustrating the theories of linear perspective and of light and shade, c1472-c1519 (1883)
Three diagrams illustrating the theories of linear perspective and of light and shade, c1472-c1519 (1883). From The Literary Works of Leonardo Da Vinci, Vol. 1 by Jean Paul Richter, PH. DR

Pythagoras (c560 - 480 BC), Greek philosopher and scientist. Mathematics. Acoustics. Engraving. (Colorised black and white print)

Atlantis: a map showing the location of the mythical continent, c1882 (1956). Showing its islands and connecting ridges, from deep sea soundings

Evolution of ManArtist: Karen Humpage
Evolution of Man

Wilhelm Richard Wagner, (1813-1883), German composer, conductor, music theorist, 1909

Geocentric or Earth-centred system of the universe, 1528. At the centre is the world showing Aristotles (384-323 BC) four elements, Earth, Air, Fire and Water, surrounded by the spheres of the Sun

Illustration of Hookes Law on elasticity of materials, showing stretching of a spring, 1678. Robert Hooke (1635-1703), English scientist and inventor, formulated his law in 1676

Keplers explanation of the structure of the planetary system, 1619. Johannes Kepler (1571-1630) used the five regular polyhedra between the spheres of the planets in the diagram of his explanation

Urania, the Muse of Astronomy, weighing and comparing systems of the universe, 1651. She is depicted giving greater weight to Tycho Brahes system, right, than to that of Copernicus

Jean Baptiste Lamarck, (1744-1829), French naturalist. Said to be the first to use the term biology. Lamarcks own theory of evolution was in fact based on the idea that individuals adapt during their

Thomas Young (1773-1829), Thin films illustrated by soap bubble, 1872
Thin films illustrated by a soap bubble. Surface tension of soapy water allows bubbles to form. Thomas Young (1773-1829) used his Wave (Undulatory) theory of light to explain colours of thin films

Music of the Spheres, 1619. The divine musical scales of the planets which German astronomer Johannes Kepler (1571-1630) calculated from the velocities of the planets when closest to

Descartes model of the Universe, 1668. Descartes Universe showing how matter which filled it was collected in vortices with a star at the centre of each, often orbiting planets

Keplers concept of an attractive force from the Sun - a virtue, early 16th century. Johannes Keplers (1571-1630) idea of gravity by which he hoped to account for his elliptical planetary orbits was

Keplers illustration to explain his discovery of the elliptical orbit of Mars, 1609. Working with data collected by the Danish astronomer Tycho Brahe

Rene Descartes model of the structure of the Universe, 1668
Rene Descartes (1596-1650) model of the structure of the Universe, [1668]. Showing matter filling the Universe collected in vortices with a star at centre of each, often with orbiting planets

Transit of Venus, 1639, (1662). Artist: Johannes Hevelius
Transit of Venus, 1639, (1662). Polish astronmer Johannes Heveliuss engraving of Jeremiah Horrockss observations of the transit of Venus, 24 November 1639

Copernicus heliocentric model of the Universe, 1543. Polish astronomer Nicolaus Copernicus (1473-1543) is considered to be the father of modern astronomy and founder of heliocentric cosmology

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