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Andre-Marie Ampere, French physicist

Andre-Marie Ampere, French physicist

Andre-Marie Ampere, French physicist

Andre-Marie Ampere, French physicist

Ampere and Arago on electromagnetism, 1820

Andre-Marie Ampere, French physicist

Andre-Marie Ampere, French physicist

Theodose Du Moncel, French physicist

Galileo Galile, Italian astronomer

Georges-Louis Le Sage, Swiss physicist

Cornelius Herz, French physician

Johann Ritter, German physicist

Galileo Galilei, Italian astronomer

Luigi Galvani, Italian physician

Galileo Galilei, Italian astronomer

Alvaro Reynoso Valdes, Cuban scientist

Galileo Galilei, Italian astronomer

Giovanni Caselli, Italian physicist

Lord Kelvin, British physicist

Lord Kelvin, British physicist

Lord Kelvin, British physicist

Johannes Gutenberg, German printer

Giuseppe Mazzini, italian politician

Werner Siemens, German electrical engineer

John Tyndall, Irish physicist

Georges-Louis Le Sage, Swiss physicist

Antoine Henri Becquerel, French physicist

Georges-Louis Le Sage, Swiss physicist

Milton visiting Galileo, illustration

Galileo receiving Milton, illustration

Galileo Galilei, Italian astronomer

Galileo Galilei, Italian astronomer

Marie Curie, Polish-French physicist

Konstantin Tsiolkovsky, rocket scientist

Svante Arrhenius, Swedish chemist

Caroline Herschel, German astronomer

Henry Bessemer, British metallurgist

Howard Florey, Australian pathologist

Jean-Martin Charcot, French neurologist

Leon Foucault, French physicist

Enrico Fermi, Italian physicist

Francois Laurent, French aeronaut

Eugene Godard, French aeronaut

Prosthetic hand by surgeon Ambroise Pare, illustration

Prosthetic legs by surgeon Ambroise Pare, illustration

Ludwig Boltzmann, Austrian physicist

Moritz von Jacobi, German physicist

Tim Berners-Lee, British computer scientist

Martin Ryle, British astronomer

Werner Siemens, German electrical engineer

Werner Siemens, German electrical engineer

Charles and Roberts' hydrogen balloon, 1783

Hans Christian Oersted, Danish physicist

Heinrich Hertz, German physicist

Galileo Galilei, Italian astronomer

Jean-Baptiste Boussingault, chemist

Marcellin Bertholet, French chemist

Georges Leclerc, Comte de Buffon, French Polymath

Hans Christian Oersted, Danish physicist

Robert Watson-Watt, British physicist

Charles Wheatstone, British physicist

Xavier Bichat, French anatomist

Xavier Bichat, French anatomist, illustration

Carl Rogers, US psychologist

Euclid, Ancient Greek mathematician

Joseph Black, Scottish chemist

Michel Chevreul, French chemist

Jean Pierre Flourens, French physiologist

Franz Achard, German chemist

Magnetic field round a coil of wire, illustration

Hippocrates, Ancient Greek physician

Charles Sanders Peirce, US philosopher

Paul Dirac, British physicist

Oliver Cromwell, English politician

Pilatre de Rozier, French balloonist

Eugene Flachat, French civil engineer

James Whistler, US painter, 19th C illustration

Jean Jaures, French politician, 19th C illustration

Benjamin Thompson, US physicist, 19th Century illustration

Murray Gell-Mann, US physicist

Alexander Graham Bell, Scottish-American inventor

Gustav Froment, French electrical engineer

Gustav Froment, French electrical engineer

Bill Hamilton, British evolutionary biologist

Elisha Gray, American electrical engineer

Julius von Mayer, German physicist

Lord Kelvin, British physicist

Hermann von Helmholtz, German physicist

Henry Moseley, British physicist

Pavel Yablochkov, Russian

Hans Orsted experimenting, 1820 artwork

Jean-Baptiste Biot, French polymath

Philipp Lenard, German physicist

Albert Michelson, US physicist

Max Born, German physicist

Wilhelm Roentgen, German physicist

Leon Foucault, French physicist

Luigi Palmieri, Italian physicist

William Crookes, British physicist

Jules Jamin, French physicist

Otto Stern, German-US physicist

Marie and Pierre Curie, physicists

Motoo Kimura, Japanese biologist

James Joule, 19th Century illustration

Henri Bouley, French veterinarian

Georges-Louis Le Sage, Swiss physicist

Solenoid demonstration, 19th century

Otto Hahn, German chemist

Robert Koch, German bacteriologist

Friedrich Wohler, German chemist

Louis Agassiz, Swiss-US geologist

Alfred North Whitehead, British mathematician

Roger Bacon, English philosopher

Michel de Montaigne, French philosopher

Charles Coulomb, French physicist

Georg Ohm, German physicist

Heinrich Dove, Prussian physicist

Pilatre de Rozier, French balloonist

William Fairbairn, Scottish engineer

William Fairbairn, Scottish engineer

Germain Sommeiller, French engineer

Severino Grattoni, Italian engineer

Montgolfier brothers, French balloonists

Rudolph Diesel, German mechanical engineer

Pierre-Paul Riquet, French engineer

Salomon de Caus, French engineer

Tessie du Motay, French chemist

Carl Ritter, German geographer

Armand-Pierre Seguier, French lawyer

Johann Kunckel, German chemist

Albert Einstein, Swiss-German physicist

Blaise Pascal, French mathematician

Jacques Charles, French balloonist

Jacques Charles, French balloonist

Niels Bohr, caricature

Louis Daguerre, French inventor, illustration

Christiaan Huygens, caricature

Christiaan Huygens, caricature

Rosalyn Yalow and Solomon Berson

Gaetano Bonelli, Italian inventor

Samuel Morse, US inventor

Jean D'Alembert, French mathematician

Thomas Hodgkin, British physician

Ernst Chladni, German physicist

Richard Wagner, 19th Century illustration

Alphonse Bertillon, French police officer

Gaspard-Felix Tournachon, French photographer

Pierre Testu-Brissy, French balloonist

Nikola Tesla, caricature

Michael Faraday, British physicist

Antoine Becquerel, French physicist

Gaston Plante, French physicist

Charles Wheatstone, British physicist

Louis Breguet, French physicist

Giovanni Caselli, Italian physicist

Lord Kelvin, British physicist

James Joule, British physicist

Alessandro Volta, Italian physicist

Alessandro Volta, Italian physicist

Aime Thome de Gamond, French engineer

Isaac Newton, English physicist

Robert Millikan, US physicist

Albert Einstein, German physicist

Isaac Newton, English physicist

Isaac Newton, English physicist

William Shockley, US physicist

Louis Breguet, French physicist

Benjamin Franklin, US scientist

August Kekule, German chemist

Georg Riemann, German mathematician

Evariste Galois, French mathematician

Pierre-Oscar Figuier, French chemist

Gaspare Aselli, Italian surgeon, illustration

Jean-Daniel Colladon, Swiss physicist

J. Hans D. Jensen, German physicist

Emil Fischer, German chemist

Hans Lippershey, Dutch optician

Georgius Agricola, German mineralogist

Jons Jacob Berzelius, Swedish chemist

Stephen Hawking, British physicist

Antoine Lavoisier, French chemist

Louis Agassiz, Swiss-US geologist

Otto von Guericke, German physicist, 19th C illustration

Johann von Goethe, German author

Thomas Young, English polymath

Rene Descartes, French mathematician

Carl Von Steinheil, German physicist

Xavier Bichat, French anatomist

Henri de Ruolz, French industrial chemist

Henri de Ruolz, French industrial chemist

David Hilbert, caricature

Ernst Kummer, caricature

Henri Poincare, caricature

Lord Kelvin, caricature

Carl Ritter, German geographer

Theophile-Jules Pelouze, French Chemist

Dmitri Mendeleev, caricature

Louis Breguet

Charles de Changy, French engineer

Prince Henri d'Orleans and Gabriel Bonvalot, explorers