Images

A gilded commemorative medal showing the mathematician and physicist Isaac Newton (1642-1727). Made in England in 1726. (Science Museum, London)

The personal copy of Isaac Newton's (1642-1727) own work Principia in which he outlines his three laws of motion and universal law of gravity. (Wren Library, Trinity College, Cambridge)

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 University...

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.