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As a ‘smart’ alarm clock it has a 2.4 GHz WiFi connectivity for firmware and content download. Unlike traditional alarm clocks, Alarmo uses a 24 GHz mmWave presence sensor [4] to detect motion during sleep and waking up. [2] The longer the user stays in bed without moving, the louder and more intense the sound of the alarm will become.
By 1997, a sound system called Dynamic Wave Sound (DWS) based on Digital waveguide synthesis was released, which had a unique, synth-like tone. By 2003, the Clarion Tone System (CTS) was also released, with a different, glass armonica-like tone, comparable to a blend of bells and organ sounds. In 2006, Rhythm introduced the Super Symphonic ...
The night watchman awakened the few who had to rise before dawn. However, watches with an additional alarm function have been around for as long as classic watches, that is, since the 14th century. In Dante's Divine Comedy of 1320, there is a very precise description of a clock equipped with a bell mechanism.
This is an accepted version of this page This is the latest accepted revision, reviewed on 23 January 2025. Type of clock A traditional wind-up (key-wound), mechanical spring-powered alarm clock An alarm clock or alarm is a clock that is designed to alert an individual or group of people at a specified time. The primary function of these clocks is to awaken people from their night's sleep or ...
A Nixie tube (English: / ˈ n ɪ k. s iː / NIK-see), or cold cathode display, [1] is an electronic device used for displaying numerals or other information using glow discharge. The glass tube contains a wire-mesh anode and multiple cathodes, shaped like numerals or other symbols. Applying power to one cathode surrounds it with an orange glow ...
The Geochron was the first world clock to display day and night on a world map, showing the sinh "bell curve" of light and darkness. The Geochron employs an intricate analog clockwork mechanism for its display, that shows the month, date, day of the week, hours and minutes, the areas of the world currently experiencing day and night , and the ...
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