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Jenner decided to give cowpox to a child, wait for him to recover and then inject him with human smallpox to check if it was infected. The child did not contract the disease, he was immune thanks to the previous inoculation of cowpox. His body, having suffered with previously cowpox had developed the necessary antibodies to fight human smallpox.Jenner had to wait a few years until she found another case of cowpox, and only then did she publish the results of her tests.
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William Morton successfully demonstrated the use of anesthesia by applying it to a patient of Dr. John Collins Warren. Dr. Warren was able to remove a tumor from his patient's neck without pain. Since then, Morton dedicated himself to administering anesthesia, concealing the type of gas he used to use it exclusively, but was forced to reveal that it was ether.
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They were invented during the first industrial revolution to reduce the amount of sewing work in textile companies. Their creator was Elías Howe.
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Antonio Meucci built the telephone to connect his office with his bedroom and thus be able to speak with his wife, who was immobilized in bed due to an illness. The device could transmit acoustic signals remotely by means of electrical signals. It was the forerunner of the current telephone, but Meucci had no money to patent the invention, so its discovery was never recognized.Until 1876 that Alexander Graham Bell patented it.
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The clinical thermometer was a closed thermometer approximately 15 cm long, which was capable of measuring the temperature of a patient in 20 minutes. It was invented by Thomas Clifford Allbutt.
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The phonograph was the most common first device for recording and reproducing sounds from the 1870s to the 1880s. It was invented by Thomas Alva Edison.
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The first gasoline cars were created almost simultaneously by various independent German engineers. One of them was invented by Karl Benz.
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At first wanting to find a cure for headaches and stress, John Pemberton experimented with cola and coca. The drink, which combined lime, cinnamon, coca leaves, and Brazilian bush seeds, was called a "medical elixir."
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A cinematograph is a machine, the work of the Lumière brothers, capable of filming and projecting moving images. Patented at the end of the 19th century, it was the first machine capable of shooting and projecting cinema films.
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The young German chemist Felix Hoffmann discovered one of the most headache-relieving substances in the world, acetylsalicylic acid. While working with a substance, he managed to obtain acetylsalicylic acid in a chemically pure and stable form. The substance was shown to have analgesic, antipyretic and anti-inflammatory effects. In 1899, the Bayer Company released it under the name Aspirin.