24th May, 2023 12:00

Fine Instruments of Science, Medicine and Books

 
Lot 263
 

A Magic Lantern Slide of Édouard Branly with his Radio Coherer

A Magic Lantern Slide titled in ink 'le ? a P exposition Branly avec le Radio Conducteur' sowing a coloured photograph of Branly in a lectuer hall with his Coherer, slide 10cm x 8.5cm

Édouard Branly was a French physicist who is best known for his invention of the Branly coherer, a device that was crucial in the development of wireless telegraphy. Born on October 23, 1844, in Amiens, France, Branly studied at the École Normale Supérieure in Paris and later became a professor at the Catholic University of Paris.

In 1890, Branly invented the coherer, which was a type of radio wave detector that was used to receive wireless signals. The coherer consisted of a tube filled with metal filings, which would become conductive when exposed to electromagnetic radiation.

The coherer was a major breakthrough in wireless communication technology, and it allowed for the development of wireless telegraphy and radio broadcasting. Branly's coherer was widely used in early radio receivers, and it paved the way for the development of more sophisticated radio wave detectors.

Édouard Branly died on March 24, 1940, at the age of 95. His invention of the coherer had a major impact on the development of wireless communication technology, and his legacy continues to be felt in the field of telecommunications today.

Estimated at £60 - £80

 

A Magic Lantern Slide titled in ink 'le ? a P exposition Branly avec le Radio Conducteur' sowing a coloured photograph of Branly in a lectuer hall with his Coherer, slide 10cm x 8.5cm

Édouard Branly was a French physicist who is best known for his invention of the Branly coherer, a device that was crucial in the development of wireless telegraphy. Born on October 23, 1844, in Amiens, France, Branly studied at the École Normale Supérieure in Paris and later became a professor at the Catholic University of Paris.

In 1890, Branly invented the coherer, which was a type of radio wave detector that was used to receive wireless signals. The coherer consisted of a tube filled with metal filings, which would become conductive when exposed to electromagnetic radiation.

The coherer was a major breakthrough in wireless communication technology, and it allowed for the development of wireless telegraphy and radio broadcasting. Branly's coherer was widely used in early radio receivers, and it paved the way for the development of more sophisticated radio wave detectors.

Édouard Branly died on March 24, 1940, at the age of 95. His invention of the coherer had a major impact on the development of wireless communication technology, and his legacy continues to be felt in the field of telecommunications today.

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