Louis Daguerre

Foucault’s Pendulum

Foucault’s Pendulum

Foucault’s Pendulum at the Panthéon, Paris, © Javi Masa 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. Ok,…
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…
Fizeau, Foucault and Astronomical Photography

Fizeau, Foucault and Astronomical Photography

Star trail composite image created by International Space Station Source: NASA 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 initiate astronomical photography. From a previous blog post you may remember Léon Foucault’s Pendulum. The instrument was used to proof Earth’s rotation in the 1850s and counts to one of Foucault’s biggest scientific…
Making Photography Really Operational – Louis Daguerre

Making Photography Really Operational – Louis Daguerre

Louis Daguerre (1787-1851) 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. Actually, Louis Daguerre did not invent photography, but, in 1829, he partnered with Nicéphore Niépce, an inventor who had produced the world’s first heliograph in 1822 and the first…
Nicéphore Niépce and the World’s First Photograph

Nicéphore Niépce and the World’s First Photograph

Nicéphore Niépce(1765 – 1833) 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. Born into the wealthy family of a lawyer, the family of Nicéphore Niépce had to flee the French Revolution. He later attended the Oratorian…
Photographic Pioneer Henry Fox Talbot

Photographic Pioneer Henry Fox Talbot

Photo Pioneer Henry Fox Talbot (1800-1877)daguerrotype taken in 1844 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,…
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