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The world's first wristwatch was made in 1868 by Patek Philippe for Countess Koscowicz of Hungary. But this form of clocks was not popular at the time.
The popularization of wristwatches was postponed until the beginning of the twentieth century. In 1904, Louis Francois Cartier, a French jeweller who complained to Cartier about the difficulty of getting his pocket watch out of his pocket while flying an airplane, complained to Cartier that he could help solve the problem so that he could see the time during the flight. So Cartier came up with the idea of tying a pocket watch to his hand with a belt and buckle to solve his friend's problem.
And this pocket watch strapped to the hand is today's wristwatch.
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During the First World War, a soldier tied his watch to his wrist for the convenience of reading it, and he could see the time by raising his wrist, which was much more convenient than before. In 1918, a Swiss watchmaker named Zana Shanu was inspired by the story of the soldier who tied his watch to his wrist. After careful consideration, he began to make a smaller watch with pinholes on both sides of the watch for leather or metal straps to hold the watch on the wrist, and the watch was born.
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The earliest clock in the world is 1088 A.D., the Chinese Song Dynasty scientists Su Song and Han Gonglian and others made the water transport instrument elephant platform, the folk called the "water clock", it is a combination of armillary sphere, armillary elephant and mechanical timer device. For the first time, this "water clock" appeared in a mechanism called the "escapement", a key component of a mechanical clock as important as the human heart, which is powered by water power**. This "escapement" structure was used 300 years earlier than on the European continent.
The world's earliest clocks were Chinese water clocks, which were concluded by the world-famous watch master and Hong Kong watch historian Jiao Dayu after several years of verification.
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Electronic watches are a new type of timepiece that only began to appear in the 50s of this century. One of the earliest electronic watches was the prototype of an electronic watch jointly announced by the American El Near Company and the Lip Watch Company in 1952. This type of watch uses an electromagnetic balance wheel instead of a mainspring drive, but the time part is exactly the same as that of a mechanical watch, and is known as the first generation of electronic watches.
In 1960, the American Blois company was the first to start the first "Akquolon" brand tuning fork electronic watch. This kind of watch uses the oscillation frequency of the tuning fork as the benchmark for timekeeping, which is simpler in structure and more accurate than balance wheel electronic watches, and is known as the second generation of electronic watches. In December 1969, the Seikosha Corporation of Japan launched the 35 SQ electronic watch.
This is the world's earliest quartz electronic watch, this kind of watch uses the natural oscillation frequency of quartz as the benchmark for time, through the electronic circuit, controls a miniature motor to drive the hands, and is known as the third generation of electronic watches. Quartz electronic watches are very popular with customers because they are accurate and simple in structure, and many performance indicators surpass mechanical watches. Soon after it appeared, put the first.
The first and second generation of electronic watches are eliminated.
The world's first truly digital computer appeared in the laboratory of Princeton University in the United States in 1948.
It's even more appealing! Beg.
The polar bear patted his head and muttered, "I'm dreaming again, how did I get to Antarctica?" "Then I went back to sleep.
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