《Mars and Its Canals》 - 免费有声读物

作者：Percival Lowell,

语言：English

类型：天文学、物理学与力学非小说类科学

1 / 34Preface

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34 章节

1. Preface
2. On Exploration
3. A Departure-point
4. A Bird’s-eye View of Past Martian Discovery
5. The Polar Caps
6. Behavior of the Polar Caps
7. Martian Polar Expeditions
8. White Spots
9. Climate and Weather
10. Mountains and Cloud
11. The Blue-green Areas
12. Vegetation
13. Terraqueousness and Terrestriality
14. The Reddish-ochre Tracts
15. Summary
16. The Canals
17. Their System
18. Gemination of the Canals
19. The Double Canals, Parts 1 and 2
20. The Double Canals, Parts 3 and 4
21. Canals in the Dark Regions
22. Oases
23. Carets on the Borders of the Great Diaphragm
24. The Canals Photographed
25. Canals: Kinematic
26. Canal Development Individually Instanced
27. Hibernation of the Canals
28. Arctic Canals and Polar Rifts
29. Oases: Kinematic
30. Constitution of the Canals and Oases
31. Life
32. Evidence
33. The Husbanding of Water
34. Conclusion

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In the days before telescope photography, astronomers had to draw what they thought they saw through the eyepiece throughout the long dark nights. Sometimes they saw saw more than there really was to see, and a bit over 100 years ago Percival Lowell published books on what he was sure were canals on Mars, signs of intelligent civilization. (In case you too are skeptical, we also have at Librivox a criticism of Lowell's theories in a book published a year later (in 1907) by Alfred Russel Wallace.) - Summary by ToddHW

《Mars and Its Canals》 - 免费有声读物

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