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Video of the rotor turning in an automatic wristwatch having a glass back, when the watch is moved by hand. An automatic watch, also known as a self-winding watch or simply an automatic, is a mechanical watch where the natural motion of the wearer provides energy to wind the mainspring, making manual winding unnecessary if worn enough. [1]
A modern LF radio-controlled clock. A radio clock or radio-controlled clock (RCC), and often colloquially (and incorrectly [1]) referred to as an "atomic clock", is a type of quartz clock or watch that is automatically synchronized to a time code transmitted by a radio transmitter connected to a time standard such as an atomic clock.
Wave Ceptor watches synchronise with radio time signals broadcast by various government time services around the world. These signals transmit the time measured by atomic clocks accurate to one second in millions of years. By synchronizing daily with the signals, the Wave Ceptor watches achieve high accuracy, using a quartz crystal to keep time ...
The hand-winding movement of a Russian watch. A mechanical watch is a watch that uses a clockwork mechanism to measure the passage of time, as opposed to quartz watches which function using the vibration modes of a piezoelectric quartz tuning fork, or radio watches, which are quartz watches synchronized to an atomic clock via radio waves.
In 1902, Kienzle launched the time stamp clock on the market and the first clocks for automobiles. The "Strapazier-Armbanduhr" was presented in 1931, and 25 million were sold. [2] At the end of the 1930s, Kienzle started the manufacture of two table clocks in the upper price segment: the Zodiac Clock and the World Time Clock.
The automatic winding of this watch had a pendulum, which rotated in an angle of about 110 °, It was limited by two springs and stored the energy in the barrel for the time function. For the company's 125th anniversary, the Memovox Parking was sold in 1958, with the central alarm disc on the dial printed with markings to set the parking time.
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