A Radi, HafezO Rasmussen, John2020-02-122020-02-122013Print ISBN 978-3-642-23025-7Online ISBN 978-3-642-23026-4https://doi.org/10.1007/978-3-642-23026-4_1https://t.ly/73RPXMSA Google ScholarThe laws of physics are expressed in terms of basic quantities that require a clear definition for the purpose of measurements. Among these measured quantities are length, time, mass, temperature, etc.enDimensional AnalysisSolar EclipseAtomic ClockAstronomical UnitTotal Solar EclipseBook chapterhttps://doi.org/10.1007/978-3-642-23026-4_1