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Albers Equal Area Conic Projection
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Mathematical Formulation and Geometric Properties
The AEACP is defined by two standard parallels ($\phi1$ and $\phi2$) along which the cone intersects the sphere of reference. Within the area between these parallels, the scale factor is precisely 1.0, meaning distortion is zero along these lines of contact. The projection is mathematically derived from the stereographic projection, but with the crucial modification that the cone is "cut" aro… -
Hipparchus Of Nicea
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Geography and Cartography
Hipparchus made significant advancements in cartography, establishing fixed points of reference using astronomical coordinates. He refined the use of latitude and longitude based on observations of stellar rising and setting times. His main contribution to geography was the development of the stereographic projection for mapping the [celestial sphere](/entries/celestial-s…