Buch, Englisch, Band 37, 199 Seiten, HC runder Rücken kaschiert, Format (B × H): 170 mm x 241 mm, Gewicht: 526 g
The Saga of Venus' Spurious Satellite
Buch, Englisch, Band 37, 199 Seiten, HC runder Rücken kaschiert, Format (B × H): 170 mm x 241 mm, Gewicht: 526 g
Reihe: Science Networks. Historical Studies
ISBN: 978-3-7643-8908-6
Verlag: Springer
The planet Venus is the closest neighbour to the Earth and in several respects similar to our globe. It revolves around the Sun at an average distance of 0. 72 astronomical units, in an elliptical orbit of eccentricity 0. 007. The corresponding 3 numbers for the Earth are 1 and 0. 017. The mean density of Venus is 5. 2 g/cm, 3 that of the Earth 5. 5 g/cm. Venus’ acceleration of gravity at its equator is 8. 9 2 2 m/s, compared with 9. 8 m/s at the Earth. The escape velocity is 10. 4 km/s, while the corresponding ?gure of the Earth is 11. 2 km/s. Although the mass of Venus is somewhat smaller than that of the Earth – the ratio is M /M =0. 815 V E – the diameters of the two planets are almost the same. In other words, Venus is indeed a sister planet of the Earth. In earlier times, when almost nothing was known about the physical con- tions of Venus, the similarity appeared even stronger than today. Not only was Venus’ period of rotation thought to be close to that of the Earth, it wasalso p- sible (and indeed common) to imagine intelligent life on Venus.
Zielgruppe
Popular/general
Fachgebiete
- Naturwissenschaften Astronomie Astrophysik
- Naturwissenschaften Physik Angewandte Physik Astrophysik
- Geisteswissenschaften Geschichtswissenschaft Geschichtliche Themen Wissenschafts- und Universitätsgeschichte
- Naturwissenschaften Astronomie Astronomie: Allgemeines
- Interdisziplinäres Wissenschaften Wissenschaften: Allgemeines Geschichte der Human- und Sozialwissenschaften
- Interdisziplinäres Wissenschaften Wissenschaften: Allgemeines Geschichte der Naturwissenschaften, Formalen Wissenschaften & Technik
Weitere Infos & Material
A moon or not? A century of confusion.- From climax to anticlimax.- Contemporary analysis and criticism.- A spurious but persistent satellite.- Closure: the discussion of the 1880s.- Conclusion, and a note on the satellites of Uranus.
