Abstract
The solar granulation is due to convection cells in the upper photosphere. As far back as 1901 Bénard showed in the laboratory that a horizontal liquid sheet, heated from below, tends to separate into a great number of ‘cells’; in the centre of each of them hot liquid ascends, it cools near the surface, and along the periphery the cooler and heavier liquid descends. In order to see the boundaries between the cells, Bénard used a refined ‘schlieren-method’, revealing minute differences in refracting index.
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References
Bénard, H.: 1901, Ann. Chim. Phys., 7e Ser., 23, 62.
Rayleigh : 1916, reprinted in Scientific Papers, Dover Publications, New York, 1964, Vol. VI, p. 432.
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© 1987 D. Reidel Publishing Company
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Kleczek, J. (1987). The Convection Cells of Bénard (L). In: Kleczek, J. (eds) Exercises in Astronomy. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-3769-7_34
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DOI: https://doi.org/10.1007/978-94-009-3769-7_34
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