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On October 4, 1957, the Soviet Union put the first artificial satellite around the Earth, Sputnik-1, into orbit. The purpose of the launch was to conduct a study of the ionosfera and verify the accuracy of certain calculations.

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The walkie talkie:

The walkie-talkie was invented by Canadian Donald L. Hings in 1937, which was assigned to military service around 1942.

It is a portable device to communicate one person with another who is at a short distance; It consists of a radio frequency wave transmitter and receiver system.

Currently walkie talkies are very useful in daily life in the police field, since these agents use them to always be in communication no matter the place or distance, this is very useful, since in emergencies, these police officers can communicate it to them. to the communication centers or the police center, so there will be better and faster attention, since these centers will know the place where the accident or event is happening and how they are notified at the time, the help will come much more Quick.

By Mathias Ampuero

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The Tv

The Tv was created by John Logie Baird, who was an inventor, He, in 1926, made's the world, first television system demonstration.

(Piero Quispe)

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Thomas Alva Edison (1847-1931) do this one, but actually, were many scientists who also gave their contribution, but all of us say that this one idea was the best. Actually, we all use one in our house.

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Claudio Diaz:

The periodic table (tabla periodica)
It was created by Dmitri Mendeléyev. He put the bases of modern chemistry and he create the grafic representation of the periodic table. And the order of the of chemical elements

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Dick Kelty in 1950 invent the bag and this personally helps me and other people a lot to facilitate the transport of some objects from one place to another.

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Phonograph
The first phonograph was invented in 1877 at the Menlo Park lab. A piece of tin-foil was wrapped around the cylinder in the middle. You shouted a short message into the piece on one side of the cylinder while you turned the handle. Inside this piece was a needle. Your voice would make the needle shake, or vibrate. The sound vibrations would go through the needle and make a line, or groove, into the tin-foil. A needle on the other side could play back what you had just recorded.

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GPS: Håkan Lans created an automatic identification system called AIS which was used to track ships and maritime traffic, which was an essential base for GPS.

Nowadays, the GPS are used all over the world, since they help people to better locate themselves if they are lost or if they want to reach a certain destination.
By: José Chambi

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In United States of America (USA), J. Robert Oppenheimer (1904-1967) an American theoretical physicis was director of the Los Alamos Laboratory and responsible for the research and design of an atomic bomb. He is often known as the “father of the atomic bomb.", Atomic bombs are made up of a fissile element, such as uranium, that is enriched in the isotope that can sustain a fission nuclear chain reaction. When a free neutron hits the nucleus of a fissile atom like uranium-235 (²³⁵U), the uranium splits into two smaller atoms called fission fragments, plus more neutrons.

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creator of the internet in 1969

by : Mateo Moreno And Nicolas Sotomayor

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The astronaut suit
led man to step on the moon for the first time, it was designed in 1935 by Emilio Herrera Linares from Granada.