Kirjahaku

This book develops methods of computing astronomical phenomena from basic ideas. The position of a celestial body is defined by a vector, with components referred to a system of coordinate axes. The relations between various systems in regular use by astronomers are described. In cases where two systems differ in spatial orientation, they are related by a rotation matrix. These matrices are discussed in considerable detail in the mathematical notes. Other topics discussed include: Kepler's Laws and the dynamics of planetary motion, Precession and Nutation, transits of Venus and Mercury, Lagrange points. While no previous knowledge of Astronomy is necessary, it is assumed that the reader is familiar with elementary algebra, trigonometry and calculus.

The Alexander Technique is practised by many thousands of people throughout the world and has been the subject of dozens of books and numerous articles. This book is not about the technique, but about its originator, his origins as a descendant of convicts transported to Tasmania, and his life spent developing, practising and teaching his methods; first in Australia, then in England and America. In this well-researched book the author (the great-niece of Alexander) provides a fascinating picture of his background, family and early career.