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  2. World map - Wikipedia

    en.wikipedia.org/wiki/World_map

    A world map is a map of most or all of the surface of Earth. World maps, because of their scale, must deal with the problem of projection. Maps rendered in two dimensions by necessity distort the display of the three-dimensional surface of the Earth. While this is true of any map, these distortions reach extremes in a world map.

  3. Radiator (heating) - Wikipedia

    en.wikipedia.org/wiki/Radiator_(heating)

    A radiator is a device that transfers heat to a medium primarily through thermal radiation.In practice, the term radiator is often applied to any number of devices in which a fluid circulates through exposed pipes (often with fins or other means of increasing surface area), notwithstanding that such devices tend to transfer heat mainly by convection and might logically be called convectors.

  4. Equal Earth projection - Wikipedia

    en.wikipedia.org/wiki/Equal_Earth_projection

    Image created with the Geocart map projection software. The Equal Earth map projection is an equal-area pseudocylindrical global map projection, invented by Bojan Šavrič, Bernhard Jenny, and Tom Patterson in 2018. It is inspired by the widely used Robinson projection, but unlike the Robinson projection, retains the relative size of areas. The ...

  5. Radiator - Wikipedia

    en.wikipedia.org/wiki/Radiator

    The Roman hypocaust is an early example of a type of radiator for building space heating. Franz San Galli, a Prussian-born Russian businessman living in St. Petersburg, is credited with inventing the heating radiator around 1855, [1] [2] having received a radiator patent in 1857, [3] but American Joseph Nason and Scot Rory Gregor developed a primitive radiator in 1841 [4] and received a number ...

  6. AuthaGraph projection - Wikipedia

    en.wikipedia.org/wiki/AuthaGraph_projection

    An approximation of the AuthaGraph projection. AuthaGraph is an approximately equal-area world map projection invented by Japanese architect Hajime Narukawa [1] in 1999. [2] The map is made by equally dividing a spherical surface into 96 triangles, transferring it to a tetrahedron while maintaining area proportions, and unfolding it in the form of a rectangle: it is a polyhedral map projection.

  7. Robinson projection - Wikipedia

    en.wikipedia.org/wiki/Robinson_projection

    Robinson projection of the world The Robinson projection with Tissot's indicatrix of deformation Map of the world created by the Central Intelligence Agency, with standard parallels 38°N and 38°S. The Robinson projection is a map projection of a world map that shows the entire world at once. It was specifically created in an attempt to find a ...

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  9. Passive daytime radiative cooling - Wikipedia

    en.wikipedia.org/wiki/Passive_daytime_radiative...

    Global map of cloud cover. Data taken from 2002 to 2015. The darker the color, the clearer the sky. Humidity and cloud coverage significantly weaken PDRC effectiveness. [7] A 2022 study noted that "vertical variations of both vapor concentration and temperature in the atmosphere" can have a considerable impact on radiative coolers.