The North American Datum is the official datum used for the primary geodetic network in North America. In the fields of cartography and land-use there are currently two North American Datums in use: the North American Datum of 1927 (NAD27) and the North American Datum of 1983 (NAD83). Both are geodetic reference systems, but are based on different measurements.
Read more about North American Datum: North American Datum of 1927, North American Datum of 1983, Comparisons Between NAD27 and NAD83, North American Datum 1983 and WGS84, Latest Version of North American Datum, See Also
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“We might hypothetically possess ourselves of every technological resource on the North American continent, but as long as our language is inadequate, our vision remains formless, our thinking and feeling are still running in the old cycles, our process may be “revolutionary” but not transformative.”
—Adrienne Rich (b. 1929)
“The Anglo-Saxon hive have extirpated Paganism from the greater part of the North American continent; but with it they have likewise extirpated the greater portion of the Red race. Civilization is gradually sweeping from the earth the lingering vestiges of Paganism, and at the same time the shrinking forms of its unhappy worshippers.”
—Herman Melville (1819–1891)
“How does it become a man to behave toward this American government to-day? I answer, that he cannot without disgrace be associated with it. I cannot for an instant recognize that political organization as my government which is the slave’s government also.”
—Henry David Thoreau (1817–1862)
“Language fails not because thought fails, but because no verbal symbols can do justice to the fullness and richness of thought. If we are to continue talking about “data” in any other sense than as reflective distinctions, the original datum is always such a qualitative whole.”
—John Dewey (1859–1952)