¶ Projective Transformation (1)
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Index Entry
Projective Transformation:
“One of the things I’ve always wanted to be able to do was to see the whole Earth at once with minimum distortion and maximum effectiveness. That brought me to d method of translating spherical data to a flat surface, which was a direct extrapolation of my mathematical investigations. . . Making a world map took me into the high stratosphere of polyhedra. . . If we put information on a sphere, the maximum that can be read is about one-quarter of the sphere. The tangential information cannot be read. Since our real objective is to be able to read all the information of the total sphere, the whole Earth, then possibly a bigger globe would give more data. But if a bigger globe will do, then why not go to the maximum condition and use the Earth itself? Actually, the bigger the globe, the smaller the reader is in relation to it and the greater the reduction in the material that can be read. There are certain optimal distances of readability. . . Rather empirically, a 12- to 16-inch globe held at arm’s length is about the best that can be read from a sphere per se.”
¶ Citations
- RBF, Univ. of Rhode Island, 26 Aug, '66, pp. 195-196.
