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arXiv · 2401.17105

The size of the Sun

Marc-Antoine Fardin·Mathieu Hautefeuille
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Abstract

Why does the Sun have a radius around 696000~km? We will see in this article that dimensional arguments can be used to understand the size of the Sun and of a few other things along the way. These arguments are not new and can be found scattered in textbooks. They are presented here in a succinct way in order to better confront the kinematic and mechanical viewpoints on size. We derive and compare a number of expressions for the size of the Sun and relate large and small scales. We hope that such presentation will be useful to students, instructors and researchers alike.

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Marc-Antoine Fardin, Mathieu Hautefeuille. 2024-01-30. The size of the Sun. https://doi.org/10.1119/5.0081964

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