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  2. CCIR System H - Wikipedia

    en.wikipedia.org/wiki/CCIR_System_H

    In each frame there are 625 lines (or 312.5 lines in a field.) So line rate (line frequency) is 625 times the frame frequency or 625•25=15625 Hz. Plan showing VHF frequency ranges for ITU Systems. The RF parameters of the transmitted signal are almost the same as those for System B which is used on the 7.0 MHz wide channels of the VHF bands ...

  3. CCIR System G - Wikipedia

    en.wikipedia.org/wiki/CCIR_System_G

    In each frame there are 625 lines (or 312.5 lines in a field.) So line rate (line frequency) is 625 times the frame frequency or 625•25=15625 Hz. The RF parameters of the transmitted signal are exactly the same as those for System B which is used on the 7.0 MHz wide channels of the VHF bands.

  4. Multiplication table - Wikipedia

    en.wikipedia.org/wiki/Multiplication_table

    In mathematics, a multiplication table (sometimes, less formally, a times table) is a mathematical table used to define a multiplication operation for an algebraic system. The decimal multiplication table was traditionally taught as an essential part of elementary arithmetic around the world, as it lays the foundation for arithmetic operations ...

  5. CCIR System B - Wikipedia

    en.wikipedia.org/wiki/CCIR_System_B

    In each frame there are 625 lines (or 312.5 lines in a field.) So line rate (line frequency) is 625 times the frame frequency or 625•25=15625 Hz. The video bandwidth is 5.0 MHz. The video signal modulates the carrier by amplitude modulation. But a portion of the lower side band is suppressed.

  6. CCIR System I - Wikipedia

    en.wikipedia.org/wiki/CCIR_System_I

    Analog TV systems global map, with System I in light green. CCIR System I is an analogue broadcast television system.It was first used in the Republic of Ireland starting in December 1961 as the 625-line broadcasting standard to be used on VHF Band I and Band III, sharing Band III with 405-line System A signals radiated in the north and east [1] of the country.

  7. Orders of magnitude (pressure) - Wikipedia

    en.wikipedia.org/wiki/Orders_of_magnitude_(pressure)

    High end of lung pressure, exertable without injury by a healthy person for brief times [citation needed] +34 kPa +5 psi Level of long-duration blast overpressure (from a large-scale explosion) that would cause most buildings to collapse [49] 34 kPa Atmospheric pressure at the summit of Mount Everest [50] +70 kPa +10 psi

  8. Mental calculation - Wikipedia

    en.wikipedia.org/wiki/Mental_calculation

    It is an in-person competition that occurs every other year in Germany. It consists of four different standard tasks --- addition of ten ten-digit numbers, multiplication of two eight-digit numbers, calculation of square roots, and calculation of weekdays for given dates --- in addition to a variety of "surprise" tasks. [8]

  9. Times table - Wikipedia

    en.wikipedia.org/?title=Times_table&redirect=no

    This page was last edited on 6 June 2004, at 11:02 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may apply ...