Acknowledgements

  I should like to recordmywarmthanks to PhillipAllcock, Russell Allcock, Steven Balbus, Roger Blandford, Stephen Blundell,Stephen Justham, Tom Lancaster, LathaMenon, John Miller, and Paul Tod for many helpful comments on drafts of this book, to Stephen Blundell for preparing the diagrams, and to Steven Lee for assistance with the optical observations.

  本書首發𝒷𝒶𝓃𝓍𝒾𝒶𝒷𝒶.𝒸ℴ𝓂,提供給你無錯章節，無亂序章節的閱讀體驗

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  Oxford,

  April 2015