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  2. Heating, ventilation, and air conditioning - Wikipedia

    en.wikipedia.org/wiki/Heating,_ventilation,_and...

    Clean air delivery rate (CADR) is the amount of clean air an air cleaner provides to a room or space. When determining CADR, the amount of airflow in a space is taken into account. For example, an air cleaner with a flow rate of 30 cubic metres (1,000 cu ft) per minute and an efficiency of 50% has a CADR of 15 cubic metres (500 cu ft) per minute.

  3. YouTube in education - Wikipedia

    en.wikipedia.org/wiki/YouTube_in_education

    YouTube was founded as a video sharing platform in 2005 and is now the most visited website in the US as of 2019. [1] Almost immediately after the site's launch, educational institutions, such as MIT OpenCourseWare and TED , were using it for the distribution of their content.

  4. Water metering - Wikipedia

    en.wikipedia.org/wiki/Water_metering

    In the United States most utilities bill only to the nearest 100 or 1,000 gallons (10 to 100 ft 3, 1 to 10 m 3), and often only read the leftmost 4 or 5 numbers on the display wheels. Using the above example, they would read and bill 1,234, rounding to 1,234,000 gallons based on a 1,000-gallon billing resolution.

  5. Radio Republik Indonesia - Wikipedia

    en.wikipedia.org/wiki/Radio_Republik_Indonesia

    RRI was established on 11 September 1945 by several figures who previously operated several Japanese radio stations in 6 cities. A meeting attended by the station delegates at Adang Kadarusman house on Menteng resulted in the decision to set up Radio Republik Indonesia by choosing Abdul Rahman Saleh as the first general manager.

  6. Seventh-day Adventist Church - Wikipedia

    en.wikipedia.org/wiki/Seventh-day_Adventist_Church

    Since then, Adventists have been on the forefront of media evangelism; It Is Written, [118] founded by George Vandeman, was the first religious program to air on color television in March 1965 and the first major Christian ministry to utilize satellite uplink technology.