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Horace Wells is credited with first using nitrous oxide to extract teeth in 1844. His colleague William Morton demostrated in 1846 the efficacy of ether as a general anesthetic, and in 1847 Simpson applied chloroform in childbirth.
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Its inventor was Elias Howe. It is used to sew up clothes faster tan if you do it by hand. It improved the develop of the textil industry.
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Charles Darwin and Alfred Russel proposed the theory of the evolution known as Darwinism based on the genotipic variety and the origin, extintion and separation of species.
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It was a syndome discovered by four doctors that consists in the absence of uterus in the pregnant women. It affects only a one women per 5000. It was finally modified in 1861
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Thomas Clifford Allbutt was its inventor. It was used to measure the temperature of the humans and animals by the use of mercury. It helps to improve the diagnostics in medicine.
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Mendel published the bases of the genetic by his experiments with the reproduction of plants. They are known as Mendel´s laws
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Its inventor was Thomas Alba Edison. It is used to iluminate darkness by the heating of a metalic thread that emits brightness. It was possible thnaks to the electricity
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The effect was discovered by Thomas Edison on February 13, 1880, while trying to discover the reason why the filaments broke and why the glass darkened of his incandescent lamps. When it positively charged the foil, most of the electrons emmited from the hot filament were drawn towards it causing a stable current flow.
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It was invented by Karl Benz. Thanks to the invention of the engine he used these power to build a machine capable of transport people from one place to another
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Joseph Jhon Thomson experimented with catodic rays and he observed that the atom was formed by two particles due to the pass of the ray. He called this new particle "electron"
