Images

A 1689 oil on canvas portrait by Godfrey Kneller of Isaac Newton (1642-1727).

Two prisms illustrating the discovery by Isaac Newton (1642-1727) that a single beam of white light could be split into a spectrum of colours, each colour being refracted at a slightly different angle from the other.

Salutation to the Great Spirit, oil painting by Frithjof Schuon, 1963.

Sky Woman, by Ernest Smith, 1936. Produced as part of the "Indian Arts Project" Federal Art Project. Collection of the Rochester Museum and Science Center.

Catlinite inlaid pipebowl with two faces of the Sisseton Sioux, early 19th century. Brooklyn Museum, Henry L. Batterman Fund and the Frank Sherman Benson Fund.

Oglala Lakota Sioux chief Red Cloud, black and white photograph by the American photographer John K. Hillers (1843-1925), Washington D.C., 1880. Yale Collection of Western Americana, Beinecke Rare Book and Manuscript Library, Yale...

Lakota Sioux holy man and leader, Sitting Bull, in 1885. U.S. National Archives and Records Administration.

Lakota Sioux leader and holy man Sitting Bull in 1883. Original photograph by D. F. Barry.

A map illustrating the state and expansion of the Russian Empire, c. 1725, during the reign of Peter I Alekseyevich (commonly known as Peter the Great), a ruler of Russia who started as a Russian Tsar in 1682, only to become the first Emperor...

Guédelon castle in Treigny, Burgundy, France. The construction began in 1997 and is inspired by the castle architecture prevalent during the reign of King Philip-Augustus (1180-1223). An example of experimental archaeology, the castle is...