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Electric battery
Created by Volta in 1801.His work was decisive for the history of science, as he was the first person to succeed in producing a stable flow of electricity for the first time. His battery was made of alternating silver and zinc discs separated by brine-soaked cardboard discs. -
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Photography
The conventional date of the invention of photography is January 7, 1839, the day Arago presented Daguerre's "invention", the daguerreotype, to the Academy of Sciences. It is in fact an improvement of Niepce's invention. Indeed the first photography was made by Niepce in 1826. He's considered the father of photography -
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"Au Bon Marché" Store
The first Au Bon Marché store was founded in 1838 by brothers Paul and Justin Videau and the present building was constructed in 1869.This store is considered to be the first department store with a wide and deep assortment, low-margin and labelled prices, direct access, the principle of satisfied or reimbursed customers and a display of the goods in a sales area. It's also the source of inspiration for Emile Zola's book "Au bonheur des dames"... -
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Phone
Created by Bell in 1876.The invention of the telephone was the result of the work of many people and was marked by a series of legal proceedings based on the patent claims of several individuals and companies, but Bell was the first to operate it on March 10, 1876. Before the invention of the electromagnetic telephone, mechanical and acoustic objects were used to transmit sound and voice. -
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Drop Hammer
Created by François Bourdon in 1841. The principle of the drop hammer is that the force of the steam, acting on the piston, lifts the hammer by the rod. As the steam escapes, the entire piston plus the hammer falls back and hits the workpiece with great force. The movement of a drop hammer, even of 100 tons, is very precise: an experienced blacksmith could close a bottle with a cork without breaking it, or break the shell of a nut leaving the fruit intact.