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The Zen Alarm Clock, [5] uses a series of progressive acoustic chimes to wake people gradually. [6] In 2001 the firm introduced a portable, digital version of its chiming alarm clock . [ 7 ] In 2005, the firm introduced an alarm clock and timer featuring a six-inch brass bowl- gong , called The Zen Timepiece.
An electric motor (often synchronous, if directly connected to the AC line) turns two sets of wheels continuously via a reduction gear train: the faster at a rate of 1 revolution per hour, the slower at a rate of 1 revolution per 24 hours. The wheels move continuously, not in steps. Mechanism of a split-flap alarm clock, removed from its case.
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 ...
Even on a day when much of America was hoping to see the sun go out, there’s still an ongoing need to hear someone sing “Don’t Let the Sun Go Down on Me.” That, among many other things, is ...
Telechron alarm clocks are particularly popular with collectors. Until about 1940, the overwhelming majority of Telechron alarm clocks had bell alarms. The entire mechanism was enclosed in a bell housing of steel. Atop the clock's coil was a metal strip that vibrated at 60 cycles per second when the alarm was tripped.
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.
A typical kitchen timer. A timer or countdown timer is a type of clock that starts from a specified time duration and stops upon reaching 00:00. An example of a simple timer is an hourglass. Commonly, a timer triggers an alarm when it ends. A timer can be implemented through hardware or software.
In 1950, Standard made a 15,000-square-foot (1,400 m 2) addition onto their Springfield plant, and introduced several new product lines, most notably fire alarm systems, fluid analyzer systems, and nurse call systems for use in hospitals.