This book is an up to date, introductory treatment of geometrical optics, from the point of view of the future optics practitioner. The principles of gaussian optics and first-order layout and design are emphasized, based on the tracing of two paraxial rays and the associated optical invariant. The radiometry of lens systems is seen to rest on the same concepts. Third order aberration theory is developed in detail. Complete examples of third order design are provided, together with software tools that allow the reader to follow the examples in detail, or to develop other examples...

Many programmers would love to use Perl for projects that involve heavy lifting, but miss the many traditional algorithms that textbooks teach for other languages. Computer scientists have identified many techniques that a wide range of programs need, such as:

• Fuzzy pattern matching for text (identify misspellings )
• Finding correlations in data
• Game-playing algorithms
• Predicting phenomena such as Web traffic
• Polynomial and spline fitting

Using algorithms explained in this book, you too can carry out traditional programming tasks in a...

This supplement to The Law of Freedom of Information covers all of the key developments in the subject up to June 2005, and is an essential purchase for all who have already bought the main work. It includes full analysis of the guidance issued by the Department for Constitutional Affairs in October 2004 and the current awareness guidance and policy development documents issued by the Information Commissioner. The authors also examine the first decisions of the Commissioner and the decisions of the Ombudsman including her ruling on the disclosure of the advice given by the Attorney General on...