图书简介

Acknowledgements; Contents; Abbreviations; Illustrations; Tables; Preface; Section 1: Historical Background; 1.1 The Sources; 1.2 Eratosthenes, the man; 1.3 Alexandria; 1.4 Greek astronomical thought before the time of Eratosthenes; Section 2: The Experiment; 2.1 Eratosthenes’ experiment; 2.2 Eratosthenes’ sundial; 2.3 Time and the solstices in Ancient Eygpt and Greece; 2.4 Ancient Eygptian and Greek sundials to the time of Eratosthenes; 2.5 A replica of Eratosthenes’ skaphe; Section 3: The Analysis; 3.1 The angle; 3.2 Errors in Eratosthenes’ methodology; 3.2.1 The effect of Syene and Alexandria not sitting on the same Longtitudinal Meridian; 3.2.2 The effect of Syene not sitting on the Tropic of Cancer; 3.2.3 The effect of the oblateness of the Earth; 3.2.4 The effect of non-parallel rays of light from the sun; 3.2.5 The effect of the components of the shadow; 3.2.6 The effect of the Earth’s rotation; 3.2.7 The effect of atmospheric refraction; 3.2.8 The effect of operational and Instrumental error; 3.2.9 The total effect of the errors; Section 4: The Stade; 4.1 The size of the stade; 4.2 Previous estimates of the size of Eratosthenes’ stade; Section 5: The Re-examination; 5.1 Eratosthenes and the 180m stade; 5.1.1 Caspian Gates to Hecatompylos; 5.1.2 Hecatompylos to Alexandria Aerion; 5.1.3 Alexandria Aerion to Prophthasia; 5.1.4 Prophthasia to Arachoti Polis; 5.1.5 Arachoti Polis to Hortospana; 5.1.6 Alexandria Aerion to Bactra-Zariaspa; 5.1.7 Alexandria to Syene; 5.2 The 180m Stade and the circumference of the Earth; Section 6: The Circumference; 6.1 The Accuracy of Eratosthenes’ Circumference; 6.2 Eratosthenes’ legacy; References; Ancient and medieval sources; Modern sources; Electronic sources

Trade Policy 买家须知