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Braille watch is used by touching the dial and noticing the embossments. Both analog and digital versions are available. The analog versions have a protective glass or crystal cover that is flipped open when time needs to be read and the clock-hands are constructed to not be susceptible to movement at the mere touch of the finger that a blind person uses to observe their positions.
A talking clock (also called a speaking clock and an auditory clock) is a timekeeping device that presents the time as sounds. It may present the time solely as sounds, such as a phone-based time service (see " Speaking clock ") or a clock for the visually impaired, or may have a sound feature in addition to an analog or digital face.
Audichron Company was a company founded in the 1930s by John Franklin in Doraville, Georgia, [1] to produce the Audichron, a talking clock. [2] By the 1970s, there were thousands of Audichron time-of-day announcers in use all over the world. Audichron had also developed a machine to announce the temperature. During the 1970s and 1980s ...
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.
The "Experimental Talking Clock" was recorded c. 1878 by inventor Frank Lambert.It was long thought to be the world's oldest playable sound recording and is listed in both the Guinness Book of World Records and The Encyclopedia of Recorded Sound as such; however, an older phonautogram recording of "Au clair de la lune" from 1860 by Édouard-Léon Scott de Martinville was reproduced for the ...
In addition to increased accuracy, the development of chip-scale atomic clocks has expanded the number of places atomic clocks can be used. In August 2004, NIST scientists demonstrated a chip-scale atomic clock that was 100 times smaller than an ordinary atomic clock and had a much smaller power consumption of 125 mW .
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3579 S High St, Columbus, OH · Directions · (614) 409-0683