## A Dictionary of Scientific Units: Including dimensionless numbers and scalesand by the Librarians and Staffs of the 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 D. B. McNEILL University of Southampton 1963 Preface to the fifth ed ition 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 oftyping, 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. |

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### Other editions - View all

A Dictionary of Scientific Units: Including Dimensionless Numbers and Scales H. G. Jerrard,Donald Burgess McNeill No preview available - 1986 |

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

### Common terms and phrases

acoustic adopted Amer American ampere Association atomic British British Standard called centimetre century CGS unit charge constant cubic defined definition density derived describe diameter difference dimensions distance electrical electron energy Engineering equal equivalent expressed factor flow fluid flux foot force French frequency fundamental gallon gauge given gives gram gravity hardness heat hour inch indicate intensity International introduced joule kilogram known letters light litre London luminous magnetic magnetic flux density magnetomotive force mass material measured metre metric mile minute name suggested Nature GB originally Phys Physics pound practical pressure produced proposed quantity radiation ratio reference replaced represents roentgen scale solution sound specified speed square standard suggested surface system of units Table temperature thermal unit of length viscosity volume watt wavelength weight wire yard