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Astronomical Institute at Amsterdam: Prof. H. Zanstra

Nature volume 158, page 740 (23 November 1946) | Download Citation



PROF. PANNBEJJEK'S successor as director of the Institute is H. Zanstra, well known in Great Britain first Radcliffe Travelling Fellow in astonomy Zanstra's work has been inspired by a keep insight, and has led to the widely accept quantitative theory of the luminosity of the gase& As nebulae. Equally significant have been his investigations of the dynamics of radiation pressure in diffuse and planetary nebulae, and his discussion of the probable expansion of the latter objects. In recent years his interest has been awakened in solar physics, and he has been responsible for investigations on the hydrodynamics of solar prominences and the polarization of resonance radiation from the limb of the sun. In Prof. Zanstra the Institute has a director who /gay be expected to maintain its great reputation.

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