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The first photograph was taken by Niépce.
The photos were obtained with Judean bitumen, spread on a silver plate, after an exposure time of several days. -
The stethoscope was invented in France by the physician René Laënnec.
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One of the great inventions of chemistry in history, discovered by William Morton. This facilitated the operation of patients and introduced the implants of new organs.
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Waterman invented the first prototype elevator, better said hoist.
It was a simple platform attached to a cable, to raise and lower goods and people. -
Heinrich Goebel created the first light bulb by inserting a carbonized bamboo filament into a tube that had been evacuated to prevent oxidation. This would be the first light bulb powered by electricity.
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Isaac Peral known was the inventor of the first torpedo submarine, he was a Spaniard born in Cartagena. This is known as the Peral submarine.
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This advance was made by the French chemist Louis Pasteur.
Pasteurization is a thermal process that is carried out in liquids, mainly food, with the intention of reducing the presence of pathogens. -
Thomas Alva Edison invented the first device capable of reproducing recorded sounds, this device was used until the 1880s.
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The ¨first plane created by Clément Ader, this one managed to take off and fly 50 m above the ground.
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The model of male (and female) condoms created with finer chemicals appeared. And these replacing the rubber prophylactics
