The space race started when America and Russia split the German rocket-scientist bounty at the end of World War II. It intensified and grew under the Cold War, and eventually subsided into mostly secret military activity as contradictions within both America and Russia sapped vitality from the race
Ptolemy's maps of earth and the heavens: A new interpretation
โ Scribed by J. L. Berggren
- Book ID
- 104747068
- Publisher
- Springer-Verlag
- Year
- 1991
- Tongue
- English
- Weight
- 768 KB
- Volume
- 43
- Category
- Article
- ISSN
- 0003-9519
No coin nor oath required. For personal study only.
โฆ Synopsis
Communicated by A. AABOE 0 ~ Among PTOLEMY'S works are two whose mathematical bases historians of science have interpreted in very much the same way. The works are The Planispherium and the cartographic sections of The Geography, and in both cases the interpretation has been in terms of pointwise projection of a portion of the surface of the sphere onto a portion of the plane.
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When an earthquake of historic magnitude leveled the industrial city of Tangshan in the summer of 1976, killing more than a half-million people, China was already gripped by widespread social unrest. As Mao lay on his deathbed, the public mourned the death of popular premier Zhou Enlai. Anger toward
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