Abstract
The sun has a radius R = 7 × 105 km, and is situated about rE = 1.5 × 108 km from the earth. Since the mass of the sun is M= 2 × 1033 g the average density can be determined as 1.4 gcm-3. However, the density changes from 70 gem-3 at the solar centre, where the temperature is 14 × 106 °K, to 10-7 gem-3 in the photosphere.
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© 1965 D. Reidel Publishing Company Dordrecht-Holland
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de Jager, C. (1965). The Solar Photosphere. In: Ortner, J., Maseland, H. (eds) Introduction to Solar Terrestrial Relations. Astrophysics and Space Science Library, vol 2. Springer, Dordrecht. https://doi.org/10.1007/978-94-010-3590-3_2
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DOI: https://doi.org/10.1007/978-94-010-3590-3_2
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