Louis Daguerre

Fizeau, Foucault and Astronomical Photography

Fizeau, Foucault and Astronomical Photography

On April 2, 1845, Armand Hippolyte Louis Fizeau and Jean Bernard Léon Foucault manage to make the very first photography of the Sun. Thereby, they both initiated astronomical photography. “To contribute usefully to the advance of science, one must sometimes not disdain from undertaking simple verifications.” – Léon Foucault (in The Life and Science of Léon Foucault : The Man Who Proved the Earth Rotates, 2003Fou by William Tobin) Before Astronomical Photography From…
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Nicéphore Niépce and the World’s First Photograph

Nicéphore Niépce and the World’s First Photograph

On March 7, 1765, French inventor Nicéphore Niépce was born, who is best known as one of the inventors of photography and a pioneer in the field. He developed heliography, a technique used to produce the world‘s first known photograph in 1825. Early Life Niépce was born in Chalon-sur-Saône, Saône-et-Loire, where his father Claude Niépce was a wealthy lawyer and the king’s counsellor, which caused the family to flee the French Revolution.…
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Making Photography Really Operational – Louis Daguerre

Making Photography Really Operational – Louis Daguerre

On August 19, 1839, French artist and physicist Louis Jacques Mandé Daguerre, after announcing his invention to the French Academy of Sciences, went public with his newly developed photographic process called Daguerrotype, the wold‘s first practicable photographic process. The Invention of Photography Actually, Louis Daguerre did not invent photography, but, in 1829, he partnered with Nicéphore Niépce,[4] an inventor who had produced the world’s first heliograph in 1822 and the first permanent…
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The Pencil of Nature – Photographic Pioneer Henry Fox Talbot

The Pencil of Nature – Photographic Pioneer Henry Fox Talbot

On February 11, 1800, Henry Fox Talbot, British inventor and photography pioneer was born, who invented the calotype process, a precursor to photographic processes of the 19th and 20th centuries. Like other pioneers of early photography, Talbot not only was occupied with the processing technology, but also is known as an photographic artist. Moreover, Talbot‘s talents also extended to mathematics, astronomy, and archaeology. Actually, he even participated in the translation of the…
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Leon Foucault demonstrating the Effect of the Earth’s Rotation

Leon Foucault demonstrating the Effect of the Earth’s Rotation

On January 3, 1851, French physicist Leon Foucault started to experiment with his eponymous pendulum, by which he was able to proof the earth‘s rotation. Actually, how can you prove that the earth is a rotating orb in an easy-to-see experiment and – of course – without spaceflight? By today, Foucault’s simple device is part of numerous natural science museums around the world. The Pendulum Ok, how does Foucault’s pendulum work? The apparatus consists…
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Scientist and Politician François Arago

Scientist and Politician François Arago

On February 26, 1786, French mathematician, physicist, and astronomer François Arago was born. Arago discovered the principle of the production of magnetism by rotation of a nonmagnetic conductor. He also devised an experiment that proved the wave theory of light and engaged with others in research that led to the discovery of the laws of light polarization. Francois Arago – Early Years Dominique-François-Jean Arago was born in Estagel, Roussillon, France. His father was…
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John William Draper – Chemist and Photo Pioneer

John William Draper – Chemist and Photo Pioneer

On May 5, 1811, American philosopher, physician, chemist, historian and photographer John William Draper was born. He is credited with producing the first clear photograph of a female face (1839–40) and the first detailed photograph of the Moon (1840). He was also the first president of the American Chemical Society (1876–77) and a founder of the New York University School of Medicine. John William Draper – Early Years John William Draper was…
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Hippolyte Fizeau and the Speed of Light

Hippolyte Fizeau and the Speed of Light

Hippolyte Fizeau (1819-1896) photo: Charles Reutlinger, Académie des Sciences, Smithsonian Institution Libraries On September 23, 1819, French physicist Armand Hippolyte Louis Fizeau was born. He is well known for his calculation of the speed of light and his suggestion to use length of a light wave be used as a length standard. Hippolyte Fizeau was born in Paris as the eldest son of Béatrice and Louis Fizeau, who was professor of Pathology at the…
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