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  2. History of timekeeping devices - Wikipedia

    en.wikipedia.org/wiki/History_of_timekeeping_devices

    The Shortt–Synchronome clock, an electrical driven pendulum clock designed in 1921, was the first clock to be a more accurate timekeeper than the Earth itself. [167] A succession of innovations and discoveries led to the invention of the modern quartz timer. The vacuum tube oscillator was invented in 1912. [168]

  3. BJC HealthCare - Wikipedia

    en.wikipedia.org/wiki/BJC_HealthCare

    BJC HealthCare is a non-profit health care organization based in St. Louis, Missouri. BJC includes two nationally recognized academic hospitals – Barnes–Jewish Hospital and St. Louis Children's Hospital, which are both affiliated with the Washington University School of Medicine . On January 1, 2024, it completed the merger of its ...

  4. Time clock - Wikipedia

    en.wikipedia.org/wiki/Time_clock

    Time clock. A time clock, sometimes known as a clock card machine, punch clock, or time recorder, is a device that records start and end times for hourly employees (or those on flexi-time) at a place of business. In mechanical time clocks, this was accomplished by inserting a heavy paper card, called a time card, into a slot on the time clock.

  5. J. B. Joyce & Co - Wikipedia

    en.wikipedia.org/wiki/J._B._Joyce_&_Co

    J. B. Joyce & Co, clockmakers, were founded in Shropshire in England. The company claim to be the oldest clock manufacturer in the world, originally established in 1690, [1] and have been part of the Smith of Derby Group since 1965. [2] The claim is challenged by another English firm of clockmakers, Thwaites & Reed, who claim to have been in ...

  6. Chinese Body Clock: About, Benefits, Research - Healthline

    www.healthline.com/health/chinese-body-clock

    For example, according to the Chinese body clock, the lungs peak between 3 a.m. and 5 a.m. Getting up early for a morning exercise during this time may help you maximize the potential of these organs.

  7. Real-time clock - Wikipedia

    en.wikipedia.org/wiki/Real-time_clock

    Real-time clock. A real-time clock ( RTC) is an electronic device (most often in the form of an integrated circuit) that measures the passage of time. Although the term often refers to the devices in personal computers, servers and embedded systems, RTCs are present in almost any electronic device which needs to keep accurate time of day .

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