## A Dictionary of Scientific Units: Including dimensionless numbers and scalesand by the Librarians and Staffs ofthe University and the Public Libraries at Southampton. Finally, we wish to thank Mrs H. G. Jerrard and Miss A. J. Tutte for typing the manuscript. Department of Physics H. G. JERRARD University of Southampton D. B. McNEILL 1963 Preface to the fifth edition Since the publication of the fourth edition in 1980 advances in technology have led to more precise values of the fundamental physical constants and a movement towards definitions of the fundamental units of mass, length and time based on atomic parameters. More precise definitions of some other units such as the candela have been approved by the international committees. These changes, together with the definitions of several new units have been included in this edition, the text of which has been revised and which now contains over 850 units and dimensionless numbers. The authors wish to thank all those who have helped in this latest compilation by suggestion and kindly criticism and Margaret Wainwright who has had the difficult and tedious task of typing, retyping and copying the fragmented parts that arise from a text revision. At the time of going to press we believe this book to provide the most complete and up-to-date information of its kind available. |

### What people are saying - Write a review

We haven't found any reviews in the usual places.

### Other editions - View all

Dictionary of Scientific Units: Including dimensionless numbers and scales H. G. Jerrard No preview available - 2012 |

A Dictionary of Scientific Units: Including dimensionless numbers and scales H. G. Jerrard No preview available - 2011 |

### Common terms and phrases

acoustic adopted Amer American Standards Association ampere atomic Brit British Standard calorie candela capacitance Celsius centimetre century CGPM CGS unit coefficient constant coulomb decibel defined derived describe diameter distance dyne electrical electromagnetic electron electron volts energy Engineering Engrs equal to 107 equivalent expressed factor farad fluid force frequency fundamental unit gallon given gram gravity hardness number heat hydrometry inch indicate Inst International joule Kelvin kilogram litre London lumen luminous intensity magnetic flux metric slug millimetre minute of arc MKS units molality molecules name suggested Nature GB Nusselt Phys Physics Planck's constant practical unit quantity radiation ratio represents roentgen Roentgen equivalent solution sometimes called sound pressure square metre surface system of units thermal unit is named unit of length unit of magnetic unit of mass velocity viscometers viscometry viscosity volume watt wavelength weber Weights and Measures yard