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  2. Radio clock - Wikipedia

    en.wikipedia.org/wiki/Radio_clock

    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.

  3. CHU (radio station) - Wikipedia

    en.wikipedia.org/wiki/CHU_(radio_station)

    CHU is the call sign of a shortwave time signal radio station operated by the Institute for National Measurement Standards of the National Research Council. [1] CHU's signal is used for continuous dissemination of official Canadian government time signals , derived from atomic clocks .

  4. Greenwich Time Signal - Wikipedia

    en.wikipedia.org/wiki/Greenwich_Time_Signal

    In Radio Gaúcha, a four-pip signal with three tones in 920 Hz and the last in 1360 Hz is broadcast every 15 minutes. The musical radio network Atlântida FM, which broadcasts to the states of Rio Grande do Sul and Santa Catarina transmits an audible signal every 15 minutes, composed by the first four notes of the song "Here Comes the Sun". [22]

  5. Time-to-digital converter - Wikipedia

    en.wikipedia.org/wiki/Time-to-digital_converter

    In that approach, the measurement is an integer number of clock cycles, so the measurement is quantized to a clock period. To get finer resolution, a faster clock is needed. The accuracy of the measurement depends upon the stability of the clock frequency. Typically a TDC uses a crystal oscillator reference frequency for good long term stability.

  6. Signal operating instructions - Wikipedia

    en.wikipedia.org/wiki/Signal_operating_instructions

    They include current and up-to-date information covering radio call signs and frequencies, a telephone directory, code-words (for rudimentary encryption), and visual and sound signals. A designated battalion signal officer prepares the battalion SOI in conformance with the SOI of higher headquarters. [2] During operations, SOI are changed daily.

  7. GPS Exchange Format - Wikipedia

    en.wikipedia.org/wiki/GPS_Exchange_Format

    GPS Exchange Format (GPX) is an XML schema designed as a common GPS data format for software applications. It can be used to describe waypoints , tracks , and routes. It is an open format [ 2 ] and can be used without the need to pay license fees.

  8. Gisèle Pelicot's ex-husband found guilty in mass rape trial

    www.aol.com/news/gis-le-pelicots-ex-husband...

    A French court has found the ex-husband of Gisèle Pelicot guilty of aggravated rapes and all other charges against him in the historic mass rape trial that has shocked the nation.. The Thursday ...

  9. Radium dial - Wikipedia

    en.wikipedia.org/wiki/Radium_dial

    November 1917 ad for an Ingersoll "Radiolite" watch, one of the first watches mass marketed in the USA featuring a radium-illuminated dial. Radium was discovered by Marie and Pierre Curie in 1898 [1] and was soon combined with paint to make luminescent paint, which was applied to clocks, airplane instruments, and the like, to be able to read them in the dark.