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Natural Area Code - Wikipedia, the free encyclopedia |
 | | An eight or ten character NAC is also called a Universal Address, because it can uniquely specify every building, house, parking meter, fire hydrant, street light, tree or any other fixed object in the world. |
 | | For example, the ten-character NAC for the centre of the city of Brussels is HBV6R RG77T. |
 | | This coordinate is the arctangent of the altitude, relative to the Earth's radius, and scaled so that the zero point (000...) is at the centre of the Earth, the midpoint (H00...) is the local radius of the geoid, i.e. |
| en.wikipedia.org /wiki/Natural_Area_Code (348 words) |
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