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  2. Orbit Irrigation Products - Wikipedia

    en.wikipedia.org/wiki/Orbit_Irrigation_Products

    Orbit logo. Orbit Irrigation Products, Inc, located in Salt Lake City, UT, United States, is a manufacturer and supplier of irrigation products for residential and commercial markets and has been in business since 1986. It distributes over 2,000 products to 40 countries on five continents. Orbit was acquired by Husqvarna Group in December 2021 ...

  3. Time switch - Wikipedia

    en.wikipedia.org/wiki/Time_switch

    The timer may switch equipment on, off, or both, at a preset time or times, after a preset interval, or cyclically. A countdown time switch switches power, usually off, after a preset time. A cyclical timer switches equipment both on and off at preset times over a period, then repeats the cycle; the period is usually 24 hours or 7 days.

  4. 555 timer IC - Wikipedia

    en.wikipedia.org/wiki/555_timer_IC

    The 555 timer IC is an integrated circuit used in a variety of timer, delay, pulse generation, and oscillator applications. It is one of the most popular timing ICs due to its flexibility and price. It is one of the most popular timing ICs due to its flexibility and price.

  5. Programmable interval timer - Wikipedia

    en.wikipedia.org/wiki/Programmable_Interval_Timer

    The Intel 8253 PIT was the original timing device used on IBM PC compatibles.It used a 1.193182 MHz clock signal (one third of the color burst frequency used by NTSC, one twelfth of the system clock crystal oscillator, [1] therefore one quarter of the 4.77 MHz CPU clock) and contains three timers.

  6. Orbit - Wikipedia

    en.wikipedia.org/wiki/Orbit

    An animation showing a low eccentricity orbit (near-circle, in red), and a high eccentricity orbit (ellipse, in purple). In celestial mechanics, an orbit (also known as orbital revolution) is the curved trajectory of an object [1] such as the trajectory of a planet around a star, or of a natural satellite around a planet, or of an artificial satellite around an object or position in space such ...

  7. Stationary orbit - Wikipedia

    en.wikipedia.org/wiki/Stationary_orbit

    A satellite being propelled into place, into a stationary orbit, is first fired to a special equatorial orbit called a "geostationary transfer orbit" (GTO). [1] Within this oval-shaped ( elliptical ) orbit, the satellite will alternately swing out to 22,300 miles (35,890 km) high and then back down to an altitude of only 100 miles (160 km ...

  8. Orbital period - Wikipedia

    en.wikipedia.org/wiki/Orbital_period

    If the same sphere were made of lead the small body would need to orbit just 6.7 mm above the surface for sustaining the same orbital period. When a very small body is in a circular orbit barely above the surface of a sphere of any radius and mean density ρ (in kg/m 3), the above equation simplifies to (since M = Vρ = ⁠ 4 / 3 ⁠ π a 3 ρ)

  9. Lunar Orbiter program - Wikipedia

    en.wikipedia.org/wiki/Lunar_Orbiter_program

    Lunar Orbiter spacecraft. The Lunar Orbiter program was a series of five uncrewed lunar orbiter missions launched by the United States in 1966 and 1967. Intended to help select Apollo landing sites by mapping the Moon's surface, [1] they provided the first photographs from lunar orbit and photographed both the Moon and Earth.

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