An analysis of the irregular rotation of the Earth and the geophysical mechanisms responsible for it.

This accessible reference presents the evolution of concepts of time and methods of time keeping, for historians, scientists, engineers, and educators. The seco

Proceedings of the 128th Symposium of the International Astronomical Union, held in Coolfont, West Virginia, USA, October 20-24, 1986.

In the twenty-first century, we take the means to measure time for granted, without contemplating the sophisticated concepts on which our time scales are based.

This book is intended for geophysicists, astronomers (especially those with an interest in history), historians and orientalists. The culmination of many years