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  2. Solar street light - Wikipedia

    en.wikipedia.org/wiki/Solar_street_light

    A solar street light in British Columbia, Canada. The solar panel is one of the most important parts of a solar street light, as the solar panel can convert solar energy into electricity that the lamps can use. There are two types of solar panels commonly used in solar street lights: monocrystalline and polycrystalline. The conversion rate of ...

  3. Photovoltaic mounting system - Wikipedia

    en.wikipedia.org/wiki/Photovoltaic_mounting_system

    The PV array consist of solar modules held in place by racks or frames that are attached to ground-based mounting supports. [ 11 ] [ 12 ] In general, ground mounted PV systems can be at the optimal tilt angle and orientation (as compared to roof mounted systems that can be non-optimal particularly for retrofits).

  4. List of flagpoles by height - Wikipedia

    en.wikipedia.org/wiki/List_of_flagpoles_by_height

    This list of flagpoles by height includes completed flagpoles which are either free–standing or supported, excluding the height of any pedestal (plinth), building, or other base platform which may elevate them.

  5. Sundial - Wikipedia

    en.wikipedia.org/wiki/Sundial

    The rays of light that graze the tip of a gnomon, or which pass through a small hole, or reflect from a small mirror, trace out a cone aligned with the celestial poles. The corresponding light-spot or shadow-tip, if it falls onto a flat surface, will trace out a conic section, such as a hyperbola, ellipse or (at the North or South Poles) a circle.

  6. Solar symbol - Wikipedia

    en.wikipedia.org/wiki/Solar_symbol

    The solar disk, crescent Moon and stars as shown on the Nebra sky disk (c. 1600 BC) The basic element of most solar symbols is the circular solar disk. The disk can be modified in various ways, notably by adding rays (found in the Bronze Age in Egyptian depictions of Aten) or a cross.

  7. Cairo Flagpole - Wikipedia

    en.wikipedia.org/wiki/Cairo_Flagpole

    The Cairo Flagpole is the world's tallest flagpole, at 201.952 m (662 ft 7 in) tall.Located in the New Administrative Capital of Egypt, it was erected on the 26 December, 2021.