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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 ...
18 cesium atomic clocks and 4 hydrogen maser clocks Cs, H National Institute of Information and Communications Technology; Koganei, ...
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 .
The NFL playoff schedule is about to be set, with the wild-card dates and times for every matchup to be revealed during Week 18.
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