(2) Generally speaking, the first computer in the world was designed and developed in 1945 by two professors of the University of Pennsylvania-Mochili and eckert. Its English name is ENIAC, and it is actually an electronic literacy computer. However, before this, people have been studying computers for a long time.
2. 1769, Frenchman N.J. Cugnot made the world's first steam-driven tricycle. However, people generally take 1886 as the first year of automobile, and some scholars take the year when Karl Benz made the first three-wheeled automobile (1885) as the year when the automobile was born. Mercedes-Benz and Daimler are regarded as the ancestors of the automobile industry.
The first machine that can really be called a computer was born in the United States in 1946. It was invented by Mao Qili and eckert, and its name is ENIAC. This computer uses vacuum tubes to process signals, so it is huge (occupying one room) and consumes high power (everyone in the town knows when to use it, because the lights in every household are dimmed! ), and the memory capacity is very low (only 100 words), but it is already a great progress in human science and technology. And we usually call this kind of computer using vacuum tube the first generation computer.
4. "Watson, come and help me!" This is Alexander Graham Bell, a famous telephone inventor, who called his assistant for help. The time is 1876, March 10. As the first recorded telephone call, it changed the world.
On February 4th, 1876, he applied for a telephone patent in the US Patent Office. In fact, just two hours after he applied, a man named E Gray also applied for a telephone patent.
5, 1924, British Baird invented the most primitive TV set, transmitting images by telex.
American RCA 1939 introduced the world's first black-and-white TV set, 1953 formulated the national color TV standard, and 1954 introduced RCA color TV set. Best answer
19th century:
1888, Irish veterinarian Dunlop was inspired by the treatment of cattle flatulence. He glued the rubber hose for watering his garden into a circle and put it on his bicycle, which was the beginning of pneumatic tires. Pneumatic tire is an epoch-making pioneering work in the history of bicycle development, which not only fundamentally changes the riding performance of bicycles, but also improves the use function of bicycles. From 179 1 to 1888, the invention and improvement of the bicycle, the ancestor of motorcycles, experienced the unremitting struggle of these inventors for nearly 100 years. We must be moved by human inventions.
From 65438 to 0886, British mechanical engineer stahly designed a new bicycle style from the perspective of mechanics and kinematics. The front fork and brake are installed, and the front and rear wheels are the same size and balanced. A diamond-shaped frame is made of steel pipe and rubber wheels are used for the first time. Stahly not only improved the structure of bicycles, but also transformed many machine tools for producing bicycle parts, which opened up a broad road for the mass production and popularization of bicycles, so he was called "the father of bicycles" by later generations. The bicycle model he designed is basically the same as the current bicycle.
1845, German von Martens invented the world's first 150 turning point. 1849, Davie-Blue Scott invented a stereo camera and a two-lens stereo observation mirror. 186 1 year, physicist Maxwell invented the world's first color photo.
Egyptians used umbrellas first. As early as BC 1200, Egyptian nobles often asked slaves to hold umbrellas for them when they went out to travel. The Romans used umbrellas to keep out the sun in the Mediterranean. In China, the umbrella was invented by Luban's wife in BC 1000. Umbrellas are called "movable houses".
As early as 183 1, the British scientist Faraday discovered the electromagnetic induction phenomenon and put forward the theoretical basis of the generator. Based on this discovery, scientists have conducted in-depth exploration and research on electricity since the 1960s and 1970s, and a series of electrical inventions have emerged. 1866 generator made by Siemens, Germany. /kloc-in the 1970s, practical generators came out.
1882, Frenchman Depreux discovered the method of long-distance power transmission, and American scientist Edison established the first coal-fired power station in the United States, connecting power lines into a network. Electricity is an excellent and cheap new energy. Its wide application has promoted the rapid development of a series of emerging industries such as power industry and electrical appliance manufacturing. Human history has entered the "electrical age" from "age of steam".
1876, Bell, a Scot who settled in Boston, USA, tried to make a phone call successfully. Edison and others made important improvements on the basis of Bell's invention, which made telephone communication popular in many countries in the world. 1877, the first telephone exchange was built in America.
1888, German scientist Hertz discovered electromagnetic waves. Using this electromagnetic wave, Italian Marconi made radio communication equipment. 1899, Marconi successfully sent a telegram between Britain and France; 190 1, transatlantic transmission succeeded. The development of modern telecommunications provides convenience for the rapid transmission of information. Since then, economic, political and cultural ties around the world have been further strengthened.
In the mid-1980s, German inventors Daimler and Karl Benz proposed the design of a light internal combustion engine, which uses gasoline as fuel. In 1990s, German engineer Diesel designed an efficient internal combustion engine, which can use diesel as fuel, also known as diesel engine. The invention of internal combustion engine, on the one hand, solved the engine problem of vehicles and caused revolutionary changes in the field of transportation. /kloc-In the late 20th century, a new type of transportation-automobile appeared. In 1980s, karl benz, a German, successfully built the first car driven by a gasoline internal combustion engine. 1896, American Henry Ford made his first four-wheel car. At the same time, many countries began to establish automobile industry.
1903, the plane made by the Wright brothers in the United States was successfully tested, which realized the dream of human beings soaring in the sky and heralded the arrival of a new era of transportation.
The 20th century:
Laser technology: expanding the new field of scientific research
1960, Mayman successfully developed the world's first practical ruby laser. It marks the birth of laser technology.
In recent years, the development speed of laser technology is amazing, and its application scope is constantly expanding, such as laser preservation, laser breeding, laser medical treatment, laser beauty, etc., which has become a hot field for scientific and technological personnel to study.
People used to rack their brains to keep vegetables fresh at room temperature, but now the laser has easily solved this problem. For example, long-distance transport of vegetables, laser scanning once before delivery is enough, and it is still fresh as usual on the road for more than ten days and eight days. The principle is simple. When the laser energy is high, the growth of vegetables is inhibited. On the contrary, its energy is suitable for its growth conditions, so laser breeding is popular again. Laser irradiation of seeds can cause variation of crop characters and increase crop yield.
Cars: keep pace with the times.
Cars have changed the whole traffic situation of human beings, and they have become the symbol of every industrial power.
Cars have gone through such a history: 177 1 year, France Lianzhu designed a steam engine tricycle; 1860, French Renault made a car engine with gas as fuel; 1885, Ben Ci and Daimler completed the locomotive of high-speed gasoline engine and the tricycle of two-stroke gasoline engine respectively, and successfully commercialized them. 1908, Ford of the United States mass-produced Model T cars with assembly lines, with low price, high safety performance and high speed. Cars began to spread; 19 12 years, Cadillac launched an electronic ignition starter to make women fall in love with cars. 1926, Daimler Ben Ci, the world's first automobile manufacturing company, was established; 1934, the first front-wheel drive car came out; 1940, many automobile manufacturers stopped production because of the war, and European automobile manufacturers began to turn to the production of military vehicles; In 1950s, Volvo's caravans in Germany became the most popular cars as soon as they were launched. 1970-2000, Japanese cars were popular in Asia, and ultra-high-tech small cars from Toyota, Honda, Mitsubishi and Nissan invaded the European and American markets, rewriting the monopoly of European and American brands.
In fact, the invention of the automobile greatly improved the mobility of human beings, and broadened their horizons and pursued freedom in the 20th century.
Mobile phone: the dream of wireless communication
1973 realized the dream of wireless communication in new york, USA. At that time, the first practical mobile phone in the world was large and weighed 1.9 kg, which was a veritable "mobile phone". Today, 26 years later, the world's smallest mobile phone was born. It is only as big as a pager and much lighter than the first generation of mobile phones.
Satellite Broadcasting: Let the Media Spread at Zero Distance
1964 is another important turning point in the history of human communication. This summer, thousands of viewers around the world watched the live broadcast of the Tokyo Olympic Games in Japan via satellite for the first time. This is the first time in human history to watch things happening thousands of miles away through TV screens at the same time. People not only lamented the spectacular opening ceremony and various competitions of the Olympic Games, but also marveled at the progress of science and technology. All this is due to the geosynchronous satellite invented by harold rosen.
Internet: Another Way of Emotional Communication
1in the summer of 969, the embryonic form of the internet appeared in the United States. It consists of four computer websites, one in the University of California and the other three in Nevada. 1972, the experimenter sent the first email on the experimental network for the first time, which marked the beginning of the combination of internet and communication. In the 1990s, the Internet began to be used for commercial purposes. 1995 ushered in the first climax of network development, known as the International Internet Year. Driven by the wave of e-commerce, the Internet will have a far-reaching impact on human society in the 2 1 century.
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