invention changed the world
Wilhelm Roentgen made the discovery in the relatively mature age of 50 years, and quite by accident. Sat up late in the laboratory, the scientists found that the current in the cathode tube, closed on all sides by dense black paper affects crystals of barium platinotsianistogo lying nearby. Once Wilhelm include current, crystals began to glow. Another version has it that the wife of Roentgen brought his wife earned dinner, and when she put a plate of food on the table, between the tube and the screen, the scientist suddenly noticed how the bones of the hand through the translucent flesh.
Since ancient times, people have sought to create a machine that would lift them above the earth. But usually attempts to raise into the sky ended construction heavier than air is quite sad. Always something so lame. That frighten management, the planting will not be possible.
As a result, only in 1903, the Wright brothers managed to not only soar over other people, but also with respect to land successfully. Their unit "Flyer - 1" flew over the valley of the Kitty Hawk as much as 59 seconds, and covered the distance of 260 meters. This is a historic event and consider the inception of aviation.
However, the plane (or rather Glider) Wright brothers had a number of significant drawbacks. Without guide rails and tailwind "Flayre- 1" could not take off. But the apparatus of the Brazilian Santos-Dumont did not depend on the wind and take-off of the rails. He took off due to engine thrust. It is for this reason that Brazilians are confident that the palm of the invention is their country belongs to the aircraft.
As a result, only in 1903, the Wright brothers managed to not only soar over other people, but also with respect to land successfully. Their unit "Flyer - 1" flew over the valley of the Kitty Hawk as much as 59 seconds, and covered the distance of 260 meters. This is a historic event and consider the inception of aviation.
However, the plane (or rather Glider) Wright brothers had a number of significant drawbacks. Without guide rails and tailwind "Flayre- 1" could not take off. But the apparatus of the Brazilian Santos-Dumont did not depend on the wind and take-off of the rails. He took off due to engine thrust. It is for this reason that Brazilians are confident that the palm of the invention is their country belongs to the aircraft.
ARPA
The idea to create a high-quality and reliable communications, which will be difficult to listen to, dates back to the 50s of the twentieth century. The US Department of Defense during the Cold War sought a way to transfer data at a distance without the use of email and phone. So was born the project from the agency network ARPA.Universitety of California, Santa Barbara, Utah and the Stanford Research Center have developed and become a reality ARPAnet network. In 1969, the newly formed network of linked computers these universities. By 1971, the number of ARPAnet users increased to 23, to the network in 1973, joined by other institutions, and with the invention E-mail number of people willing to talk for a while on the network began to grow exponentially.
In 1977 the Internet enjoyed just some hundred people, in 1984 - already 1000 people in 1989 - more than 5 thousand people, in 1997 - 19.5 million people, in 2011 - 2,1 billion people.
In 1977 the Internet enjoyed just some hundred people, in 1984 - already 1000 people in 1989 - more than 5 thousand people, in 1997 - 19.5 million people, in 2011 - 2,1 billion people.
Karl Benz
The very first car in the world on the gasoline engine was created by Karl Benz (Karl Benz) in 1886. The device is more like a big tricycle than usual modern man avtomobil.Benzinovy engine thrust transmitted to the rear wheels of the machine. The maximum speed that could develop - 15 km / h. Engine power was only 0.9 hp The role of transmission belt performing that before each trip had to be attached to the working shkivtu. Engine cooling is by water.
Charles Babbage
The world's first computer was an American programmable computer, which is designed and built in 1941 by Harvard mathematician Howard Acheson with the cooperation of the four engineers of IBM, in order that the computer and developed. The computer was based on the ideas of Charles Babbage.
The official launch of the first under the name "Mark 1" computer in the world was carried out after a successful test August 7, 1944. The computer is located in the walls of Harvard universiteta.Stoimost this computer was 500 thousand dollars. Computer is assembled in a stainless steel housing and glass, had a length of about 17 meters, a height of over 2.5 meters, weighs about 4.5 tons, occupied an area several tens of meters. Computer Mark 1 contained the electromechanical switches, relays and other parts in the amount of 765,000 shares.
The official launch of the first under the name "Mark 1" computer in the world was carried out after a successful test August 7, 1944. The computer is located in the walls of Harvard universiteta.Stoimost this computer was 500 thousand dollars. Computer is assembled in a stainless steel housing and glass, had a length of about 17 meters, a height of over 2.5 meters, weighs about 4.5 tons, occupied an area several tens of meters. Computer Mark 1 contained the electromechanical switches, relays and other parts in the amount of 765,000 shares.
Despite the fact that the first phone was demonstrated at the end of the XIX century, the first mobile phone appeared already in the 70s of the twentieth century. Father "handset" refers to Martin Cooper, an employee of Motorola. He worked then in the department for the development of portable devices, and when his colleagues saw a tube weighing more than a kilogram, then laughed. Nobody believed in the success of the new invention.
But the April 3, 1973, Martin Cooper made everyone believe in it "portable handset". Walking, in Manhattan, called Cooper with his "brick" the head of research at Bell Laboratories Joel Engel. The choice fell on this man's not a coincidence. Martin Company with Bell Laboratories led the fight for mobile communication and customer. So the father of "mobile telephones" showed who's in the field of portable devices.
But the April 3, 1973, Martin Cooper made everyone believe in it "portable handset". Walking, in Manhattan, called Cooper with his "brick" the head of research at Bell Laboratories Joel Engel. The choice fell on this man's not a coincidence. Martin Company with Bell Laboratories led the fight for mobile communication and customer. So the father of "mobile telephones" showed who's in the field of portable devices.