"Interferometry and Synthesis in Radio Astronomy" by A. Richard Thompson, James M. Moran, and George W. Swenson Jr., third edition, is a comprehensive textbook on radio astronomy. It covers the principles and applications of interferometry and synthesis, with a detailed historical account of the development of radio astronomy. The book discusses the evolution of radio telescopes, from early experiments in Australia and England to modern systems like the Very Large Array and the Westerbork Synthesis Radio Telescopes. It also covers the development of techniques such as aperture synthesis, earth rotation synthesis, and very long baseline interferometry (VLBI). The book is structured into 17 chapters, each covering a specific aspect of interferometry and synthesis. It includes detailed discussions on the theory of interferometry, the geometry of interferometers, the response of electronic receiver systems, digital signal processing, calibration and imaging, and the effects of the ionosphere and troposphere on observations. The book also addresses the challenges of interferometry, such as the influence of the propagation medium on signal quality. The third edition includes additional material and updates to reflect the latest developments in the field. The book is available as open access, making it freely available to anyone interested. It is also available in print for 55 Euros. The book is a valuable resource for researchers and students in the field of radio astronomy."Interferometry and Synthesis in Radio Astronomy" by A. Richard Thompson, James M. Moran, and George W. Swenson Jr., third edition, is a comprehensive textbook on radio astronomy. It covers the principles and applications of interferometry and synthesis, with a detailed historical account of the development of radio astronomy. The book discusses the evolution of radio telescopes, from early experiments in Australia and England to modern systems like the Very Large Array and the Westerbork Synthesis Radio Telescopes. It also covers the development of techniques such as aperture synthesis, earth rotation synthesis, and very long baseline interferometry (VLBI). The book is structured into 17 chapters, each covering a specific aspect of interferometry and synthesis. It includes detailed discussions on the theory of interferometry, the geometry of interferometers, the response of electronic receiver systems, digital signal processing, calibration and imaging, and the effects of the ionosphere and troposphere on observations. The book also addresses the challenges of interferometry, such as the influence of the propagation medium on signal quality. The third edition includes additional material and updates to reflect the latest developments in the field. The book is available as open access, making it freely available to anyone interested. It is also available in print for 55 Euros. The book is a valuable resource for researchers and students in the field of radio astronomy.