Photo Researchers ftp March 2011

The world's first supersonic aircraft, the Bell X-1, piloted by Charles "Chuck" Yeager, flew faster than the speed of sound on October 14th, 1947. Th...

Diatoms, after Ernest Haeckel, "Artforms in Nature," 1904.

Dinoflagellates, after Ernest Haeckel, "Artforms in Nature," 1904.

Dinoflagellates, after Ernest Haeckel, "Artforms in Nature," 1904.

"Through these holes in the south face of the Brookhaven reactor are introduced tons of pure uranium metal. Once in the graphite moderator of the rea...

Shippingport Atomic Power Station, circa 1957. "The heart of the nation's first full-scale atomic-electric generating station -- this 58-ton, multi-m...

"Fuel elements are loaded into the core of General Electric Company's Vallecitos developmental boiling water reactor, which today produced steam for t...

"Feminine despite her occupation, Miss Mary Texanna Loomis, the only woman in the world to own and run a radio school, stops in the midst of a message...

Illustration of cork wood cells by Robert Hooke from observations of cork wood under a microscope. Robert Hooke (1635-1703) was born in England and s...

Engraving of Sir Isaac Newton (1642- 1727), English physicist, mathematician and alchemist. As a mathematician Newton discovered the binomial theorem...

Engraving of Sir Isaac Newton (1642- 1727), English physicist, mathematician and alchemist. As a mathematician Newton discovered the binomial theorem...

Thomas Hunt Morgan (1866-1945) recipient of the 1933 Nobel Prize for Medicine. His work with fruit flies proved the relationship between genes and chr...

Otto Hahn (1879-1968), German chemist, Nobel Laureate and discoverer of nuclear fission. Hahn's family wanted him to be an architect, but he was event...

Sir James Chadwick (1891-1974), English physicist. Educated in Manchester, Chadwick worked under Rutherford on research mainly with alpha particles (h...

Painting on papyrus from Thebes depicting the Egyptian god Ibis with a noble couple. Old Kingdom, about 4,000 years old.

Painting on papyrus from Thebes depicting the Egyptian god Ibis with a noble couple. Old Kingdom, about 4,000 years old.

Title page from "De humani corporis fabrica," (On the Fabric of the Human Body), by the Belgian scientist Andreas Vesalius (December 31, 1514 - Octobe...

The Reverend Nevil Maskelyne, Astronomer Royal, in an oil portrait by J. Downman.

Count Rumford (1753-1814), born Benjamin Thompson, English-American physicist and reformer. Born in Massachusetts, he joined the army at 18, acting as...

Rudolph Virchow (1821-1902), German doctor known for his advancement of public health.

Niccol? Fontana Tartaglia. (1499/1500, Brescia, Italy - December 13, 1557, Venice, Italy).

Gottfried Wilhelm von Leibniz. German mathematician. (July 1, 1646 - November 14, 1716).

John Tyndall (2 August 1820 - 4 December 1893), prominent 19th century physicist. He studied diamagnetism and thermal radiation, and produced a number...

Giovanni Pierio Valeriano was an Italian Renaissance humanist, favored by the Medici. Among his books, De Infelicitate Literatorum and Hieroglyphica s...

This photograph of Virchow and friends in the pathology laboratory at the Charity Hospital, Berlin, has always been used to project an image of the ph...

1820-1910. By sheer force of character, Nightingale, born in Florence, Italy, created the movement that led to professional status for nurses. Her car...

Model of the wooden south pointing turtle of Southern Sung.

Details from a 16th century allegorical engraving about the voyages of discovery. The captain at sea, has a quadrant in his hand, but isn't using it....

The Reverend Nevil Maskelyne, Astronomer Royal, in an oil portrait by J. Downman.

Count Rumford (1753-1814), born Benjamin Thompson, English-American physicist and reformer. Born in Massachusetts, he joined the army at 18, acting as...

Rudolph Virchow (1821-1902), German doctor known for his advancement of public health.

Niccol? Fontana Tartaglia. (1499/1500, Brescia, Italy - December 13, 1557, Venice, Italy).

Gottifried Wilhelm von Leibniz. German mathematician July 1, 1646 - Nov. 14, 1716.

Ivan Turgenev, russian novelist. Nov. 9, 1818 - Sept. 3, 1883.

John Tyndall (2 August 1820 - 4 December 1893), prominent 19th century physicist. He studied diamagnetism and thermal radiation, and produced a number...

The early 16th century explorer was the first European to explore the east coast of what would become the United States north of the Florida peninsula...

Giovanni Pierio Valeriano. Among his books, De Infelicitate Literatorum and Hieroglyphica sive de sacris Aegyptiorum litteris commentarii are notable....

Richard Trevithick (1771-1833), British engineer and father of locomotive power. As a child, Trevithick showed little academic ability. He began worki...

Alfred Lord Tennyson.

Alfred Lord Tennyson.

Alfred Lord Tennyson.

Alfred Lord Tennyson.

1820-1910. By sheer force of character, Nightingale, born in Florence, Italy, created the movement that led to professional status for nurses. Her car...

Model of the wooden south pointing turtle of Southern Sung.

Model of the wooden south pointing turtle of Southern Sung.

Bronze compass of the Ming Dynasty.

Engraving of historical astronomy instruments.

Details from a 16th century allegorical engraving about the voyages of discovery. The captain at sea, has a quadrant in his hand, but isn't using it....

Portrait of Louis Pasteur (1822-1895), French chemist and bacteriologist who founded the science of microbiology. Pasture discovered that disease coul...

Cholera-infected pump.