THOMAS EDISON (1847-1931).
THOMAS ALVA EDISON (1847-1931).
THOMAS A. EDISON (1847-1931).
EDISON & STEINMETZ, 1922.
LEE DE FOREST (1873-1961).
Thomas Alva Edison (1847-1931), American Inventor, half-length seated Portrait, Louis Bachrach, Bachrach Studios, 1922
Thomas Alva Edison (1847-1931), American Inventor, half-length Portrait, Louis Bachrach, Bachrach Studios, 1922
NIKOLA TESLA (1856-1943).
BENJAMIN FRANKLIN (1706-1790).
SAMUEL PIERPONT LANGLE
SAMUEL PIERPONT LANGLEY
THOMAS ALVA EDISON
THOMAS A. EDISON, 1879.
Thomas A. Edison with Phonograph, Engraving, circa 1888
JOHN WORRALL KEELY, c1895.
ALEXANDER GRAHAM BELL/n(1847-1922).
Female scientist using FTIR spectrophotometer, focusing sample on microscope camera,
EDISON WITH HIS FAMILY.
ROBERT ANDREWS MILLIKA
LUTHER BURBANK (1849-1926).
AMERICAN SCIENTISTS.
ELI WHITNEY (1765-1825).
THOMAS EDISON (1847-1931)
ALBERT EINSTEIN (1879-1955).
CHARLES DURYEA (1862-1938).
SIR CHARLES WHEATSTONE
ISAAC NEWTON (1643-1727).
WRIGHT BROTHERS GLIDER.
SANTORIO SANTORIO
Thomas Alva Edison (1847-1931)
WILLIAM McDOUGAL
ALFRED RUSSEL WALLAC
Thomas Alva Edison
EMILE BERLINER (1851-1929).
SIR FRANCIS GALTON
JAMES P. JOULE (1818-1889).
BENJAMIN THOMPSON
OLIVER W. HOLMES (1809-1894).
WILLIAM JAMES (1842-1910)
BENJAMIN FRANKLIN
CARL GUSTAV JUNG (1875-1961)
WILLIAM HUGGINS (1824-1910).
CARL SAGAN (1934-1996).
HENRY FAIRFIELD OSBORN
ALFRED RUSSEL WALLACE
THOMAS H. HUXLEY (1825-1895).
GEORGE WASHINGTON CARVER
JOHN BURROUGHS (1837-1921).
ELMER AMBROSE SPERRY
WRIGHT BROTHERS
Thomas Edison, US inventor
ROBERT FULTON (1765-1815).
MABEL HUBBARD BELL (1857-1923).
MICHAEL IDVORSKY PUPIN
JAMES NAISMITH (1861-1939).
Benjamin Franklin, born in Boston, Jan 17th 1706, -- died in Philadelphia, April 17th 1790, Painted by T.H. Matteson, Esqr., Engraved by Henry S. Sadd, Printed by J. Neale, 1846
CHRISTIAN HUYGENS
NIGERIA: CHEMISTRY STUDENT.
RICHARD EVELYN BYRD
Workers Making Money
WILLIAM LILLY (1602-1681).
JOHN NAPIER (1550-1617).
JOHN PLAYFAIR (1748-1819).
PROPELLER DESIGN, 1982.
Berlin, Germany: c. 1929.Researchers at Dr. Piorkowski's Bacterio-Physiological Institute in Berlin use the most modern methods and equipment in the germ research being done there. Here a researcher is using one of the new devices on a patient to search
LINCOLN BEACHEY (1887-1915).
SIR CHARLES LYELL
ALEXANDER VON HUMBOLDT
SIR JOHN F.W. HERSCHEL
JEAN HENRI FABRE (1823-1915).
JOHN STEVENS HENSLOW
ERNST BORIS CHAIN (1906-1979).
Tomales Bay, California: 1952 Archeologists working at a site.
ARCTIC EXPEDITION, c1913.
MARIE AND PIERRE CURIE.
ELIE METCHNIKOFF (1845-1916).
JAMES HUTTON (1726-1797).
HUGH PRICE HUGHES (1847-1902).
Thomas Simonton, US astronomer
FRANZ BOAS (1858-1942).
Helen Lois Koch, American psychologist
MARIE CURIE (1867-1934).
Richard Feynman, US physicist
Thomas Alva Edison.
VERNON L. KELLOGG (1867-1937).
ANTOINE LAURENT LAVOISIER
JAMES CURLEY (1796-1889).
PAUL DIRAC (1902-1984).
WERNER KARL HEISENBERG
MAX PLANCK (1858-1947)
John N Stockwell, American astronomer
Seth Chandler, US astronomer
William Coblentz, US physicist
THOMAS YOUNG (1773-1829).
Chicago, Illinois: October 14, 1930 The Chicago harbor master and other officials use a diver to investigate the sinking of the Rotarian, a sidewheeler excursion steamboat moored at the city pier where it was used as a dance hall and restaurant.
ROBERT PEARY (1856-1920).
AUGUSTA DEJERINE (1859-1927).