Web Search

  1. Results from the WOW.Com Content Network
  2. Pendulum - Wikipedia

    Pendulum clocks were used as time standards until World War 2, although the French Time Service continued using them in their official time standard ensemble until 1954. Pendulum gravimeters were superseded by "free fall" gravimeters in the 1950s, [67] but pendulum instruments continued to be used into the 1970s.

  3. List of digital television deployments by country - Wikipedia

    In 2020 to 2021, for the first time in Africa, HD demonstration content was received via satellite without the need for a separate external receiver or decoder. At the 2021 Industry Day's conference in Egypt, Cairo broadcast quality HD content (with a resolution of 1080 × 720 pixels at 50 FPS) was encoded using AVS encoder (at a bit rate of ).