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Axolotls are cute 🥰

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The antecessor of the helicopter (Leonardo Da Vinci)
Leonardo da Vinci’s sketches from the late fifteenth century were the predecessor to the modern day flying machine (the helicopter). As with many of da Vinci’s ideas, he never actually built and tested it – but his notes and drawings mapped out exactly how the device would operate.
Da Vinci scrawled next to his sketches of the screw-like machine the following description: "If this instrument made with a screw be well made – that is to say, made of linen of which the pores are stopped up with starch and be turned swiftly, the said screw will make its spiral in the air and it will rise high."
Also known as the "Helical Air Screw" or simply the "airscrew", the device was designed to compress air to obtain flight – similar to today’s helicopters. Da Vinci was a big proponent of the many possibilities offered by the screw shape, and he used the shape for other inventions and designs as well.
Da Vinci’s helicopter measured more than 4 metres in diameter and was made from reed, linen and wire. It was to be powered by four men standing on a central platform turning cranks to rotate the shaft. With enough rotation, da Vinci believed the invention would lift off the ground. Unfortunately, due to weight constrictions, modern scientists do not believe da Vinci’s invention would have been able to take flight.

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Karl Benz
Karl Benz was born November 25, 1844 in Germany. A mechanical engineer, he designed and built the first practical car powered by an internal-combustion engine. The original car, his three-wheeled Motorwagen, first ran in 1885. His company produced its first four-wheeled car in 1893 and the first of its series of racing cars in 1899. He left the company in 1906 to form another group with his sons.

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Juan de la Cierva : autogiro

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Archimedes was born in 287 before Christ in Syracuse and died in 212 before Christ in the same place. Archimedes invented the archimedean screw, which was a screw inside a cylinder and served to raise water, flour or cereals by the screw to the surface. This has served mankind for pumping water. He also served in 2001 to help engineer John Bruland straighten the tower of Pisa by removing water-saturated earth.

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James Naismith
Born on November 6, 1861, James Naismith was a Canadian and American sports coach and innovator. He invented the game of basketball in 1891. He is also credited with designing the first football helmet. He penned the first basketball rulebook, and established the basketball program at University of Kansas. Naismith has been given numerous posthumous honors for his contributions to the world of sports. He died in Kansas on November 28, 1939.

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William Higginbotham.
William has born in October of 1910 in Bridgeport, EEUU and died in November of 1994 in Gainesville, EEUU.
William was a physicist who participated in the development of the atomic bomb and the leader of the Instrumentation Division of Brookhaven National Laboratory, created an oscilloscope in 1958, to entertain the visitors during the excursions in this national laboratory, also I was the first president of the Federation of American Scientists.
This man is considered the father of video games because he invented “tennis for two”, the first video game in the world. Creating it was not a problem since I worked on military technology in the Second World War. He used an oscilloscope as if it were a monitor, connected to an analog computer. The game had a horizontal line that was the playing field and a vertical line in the center of the field representing the net. The players had to choose the angle at which the ball came out and hit it like in a tennis match. People played on the excursions and they loved the game, if it were sold, William would be the richest man in the world.
Today, video games have come a long way and have become the favorite entertainment medium of people overcoming music or movies, thanks to William the father of video games.

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Here it is a photo of Isaac Peral

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Isaac Peral:
He was born in Caragena,Spain the first of June of 1851 and he died at the age of fourty-three in Berlin,Germany the 22th of May of 1895. He invented the Peral submarine, something curious is that it was an electric submarine!!
It has been used by the Spanish ARMY since 1888. It has changed the point of view of the sea wars, this submarine has been also used to do very different discoveries

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Galileo Galilei
he was born on February 15, 1564, in Pisa, and died on January 8, 1642. He was an Italian astronomer, philosopher, engineer, mathematician and physicist, closely related to the scientific revolution.
His achievements include the improvement of the telescope, a great variety of astronomical observations and the first law of motion.
Call him: the father of astronomy.
Telescope:

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Alva john fisher

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Alva John Fisher

He was borned the first of January of 1862 in Chicago (United States) and died the 31th of december of 1947.

He was an amerian engineer who invented the first electric washing machine in 1901, over time he improved his own invention.
That was very useful and important because before of this, the people had to clean their clothes by hand, and it was a hard Workhouse. Actually everyone have one.
PS: you can't wash your cat.....
Take Care!!!😸

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CHARLES TELLIER.
He borned the 29 of June 1828 in French and he died there in 1913. He was a french engineer.
He built the first fridge in the world. It was a machine that allows to lengthon the good condition of peridhable food to a few ideal temperatures.
He changed the world because the fridge allows to be able to supply us of food and to have provisions in our homes without these could get damaged for the temperature that exists in the environment.

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VINTON CERF

Vinton Cerf,was born in EEUU on june of 1943, American computer scientist who is considered one of the founders, along with Robert kahn, of the Internet.

The Internet is the union of all the networks and computers distributed all over the World , so it could be defined as a global network in which all the networks that use TCP/IP protocols and are compatible with each other.

Today, the Internet has many fuctions, but these incluides the folling:
-Studies
-Jobs
-Commerce
-Consulting
-Communictation
-Online Games

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NIKOLA TESLA

Nikola Tesla was born in July of 1856, in what is now Croatia. He came to the United States in 1884 and briefly worked with Thomas Edison before they got separated.

He contributed to develop the alternating-current electrical system (AC Current) that we use every day in our houses and he invented the AC motor, now used for electric cars.

His inventions are used today all over the world and he tried to change the world. We could have all the cars electric thanks to him, but petrol interests more to the governments.

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JOHN LOGIE BAIRD:
He was born in Scotland on 13 August 1888.Was an engineer, physicist and inventor,Leaving several relevant knowledge and discoveries before passing awayat the age of 57 in East Sussex, England.

He invented the television:
Is a system for the transmission and reception of images and sound that simulate movement, remotely using a diffusion mechanism.He got it in 1924 and continued to investigate.

Gives us current information from all over the world and serves us as entertainment.

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ALFRED NOBEL:
He was born on 1833 in Estocolmo and he died on 1896 in Italy.His invented was the dynamite.
In 1863 managed to control by means of a detonator the explosions of the nitroglycerine in1865 perfected the system with a mercury detonator there by reducing the risk of accident (the accidental explosions of nitroglycerin, one of which had killed his own brother Emil.
THE DYNAMITE:
is an explosive made of nitroglycerin, sorbents (such as powdered shells or clay) and stabilizers,It rapidly gained wide-scale use as a safer alternative to gun powder and nitroglycerin
HOW ITS CHANGED THE WORLD
Alfred Nobel became a billionaire thanks to the dynamite, a discovery that was quickly used also in the service of war.
He thought that if weapons with devastating effects were discovered, nations would live in peace for fear they would be used.

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ANTONIO MEUCCI:
Antonio Meucci was born in Florence on 13 April 1808 and died in New York on 18 October 1889 he was the inventor of the telephone.

The telephone is a telecommunication device designed to transmit acoustic signals at a distance by means of electrical signals.

The telephone today is very useful in our lives since we can talk to other people who are at distances very far from us.

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Inventor
Invention (name and description)
Its benefits for humankind
Photo

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MANUEL JALÓN:

Born on January 31, 1925 and died on December 16, 2011. He was a Spanish inventor. Aeronautical training engineer, and Air Force Officer at Zaragoza Air Force Base, invented the disposable mop and syringe. With the roller bucket and later with the mop, Manuel Jalón managed to improve the quality of life in Spanish homes qualitatively, overcoming the traditional way of cleaning the floor on his knees, since with his inventions he could clean the floor without kneeling ( Cause of knee bursitis and spinal problems) and without wearing hands by bleach.

THE MOP:

The mop is a tool to clean the floor in wet and usually consists of a stick at the end of which are absorbent fringes. The mop is usually understood associated with a bucket provided with a wringing mechanism. To clean the floor, after moistening it and draining it, it rubs against the surface to be cleaned. It is also frequently used to clean spilled liquids.

WHY WAS THE MOP IMPORTANT?

The mop was important because before the women cleaned with a cloth and knees, and now thanks to the mop do not have so many problems of back and clean up standing.