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  2. Christianity - Wikipedia

    en.wikipedia.org/wiki/Christianity

    At first he persecuted the early Christians, but after a conversion experience he preached to the gentiles, and is regarded as having had a formative effect on the emerging Christian identity as separate from Judaism. Eventually, his departure from Jewish customs would result in the establishment of Christianity as an independent religion.

  3. Switched-mode power supply - Wikipedia

    en.wikipedia.org/wiki/Switched-mode_power_supply

    Switched-mode power supplies are used for DC-to-DC conversion as well. In heavy vehicles that use a nominal 24 V DC cranking supply, 12 V for accessories may be furnished through a DC/DC switch-mode supply. This has the advantage over tapping the battery at the 12 V position (using half the cells) that the entire 12 V load is evenly divided ...

  4. Radar in World War II - Wikipedia

    en.wikipedia.org/wiki/Radar_in_World_War_II

    The Type 42 had more revisions, including a change to using four Yagi antennas. Some 60 were built and put into service in October 1944. Both systems had a range of about 40 km. The NTRI made minimal changes to the 60 cm (500-MHz) Würzburg, mainly converting the oscillator from vacuum tubes to a magnetron. The result was the Type 23 anti-ship ...

  5. Glossary of broadcasting terms - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_broadcasting_terms

    Also AM radio or AM. Used interchangeably with kilohertz (kHz) and medium wave. A modulation technique used in electronic communication where the amplitude (signal strength) of the wave is varied in proportion to that of the message signal. Developed in the early 1900s, this technique is most commonly used for transmitting an audio signal via a radio wave measured in kilohertz (kHz). See AM ...