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章节目录
共 41 题- ENCYCLOPAEDIA BRITANNICA
- ELEVENTH EDITION
- VOLUME XVII, SLICE VI
- Map to Mars
- ARTICLES IN THIS SLICE:
- MEASUREMENT ON MAPS
- HISTORY OF CARTOGRAPHY
- MAP PROJECTIONS
- Then the value of M is
- M = 4 sin² ½[beta] + 2kH + k²H´.
- 1 - {h(z + b)/sin b}. (ii.)
- This is a maximum when
- Also
- In the general case--
- Thus--
- Put
- P[beta] being the value of 2p sin z when z = [beta]. This gives
- Put
- Now if [sigma][sigma]´ = 1 the areas are correctly represented, then
- Reverting to the general expression for equal-area conical projections
- The following projections have been briefly described:--
- FOOTNOTES:
- The usual postpositions are:--
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- Rogers, in _The Pleasures of Memory_, recalls how
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- The rocks known as shell marls are found
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