Derived quantity | Quantity symbol | Name | Expression in SI base units |
---|---|---|---|

area | A | square metre | m^{2} |

volume | V | cubic metre | m^{3} |

speed, velocity | u, v, c | metre per second | m s^{-1} |

acceleration | a, g (free fall) | metre per second squared | m s^{-2} |

moment of inertia | I | kilogram square metre | kg m^{2} |

kinematic viscosity | v | square metre per second | m^{2} s^{-1} |

wave number | σ, φ | reciprocal metre | m^{-1} |

mass density | ρ | kilogram per cubic metre | kg m^{-3} |

specific volume | v | cubic metre per kilogram | m^{3} kg^{-1} |

current density | j, i | ampere per square metre | A m^{-2} |

magnetic field strength | H | ampere per metre | A m^{-1} |

concentration of substance B: | c_{B}, [B] | mole per cubic metre | mol/m^{-3} |

molar mass | M | kilogram per mole | kg mol^{-1} |

molar volume | V_{m} | cubic metre per mole | m^{3}mol^{-1} |

luminance | L | candela per square metre | cd m^{-2} |

mass fraction | w | kilogram per kilogram | dimensionless |

The table above shows some examples of derived quantities and units expressed in terms of SI base units.

Some quantities are defined as the ratios of two quantities of the same kind, and thus have a dimension expressed by the number one. Examples of such quantities are refractive index, relative permeability, and mass fraction. Other quantities having the unit 1 include "characteristic numbers" like the quantum number and numbers which represent a count, such as a number of molecules and partition function in statistical thermodynamics. All of these quantities are described as being dimensionless, or of dimension one, and have the coherent SI unit 1. Their values are simply expressed as numbers and, in general, the unit 1 is not shown. In a few cases, a special name is given to this unit, mainly to avoid confusion between some compound derived units. This is the case for the radian, steradian and neper.

**Si Units:**

Index of Unit Converters |

To use the measurement conversion calculators simply enter a number value into the desired field and click calculate. All results shown will be equivalent values. Values are given to seven significant figures ( the odd result may show 9's or 0's over running). Values of 10 000 or greater will be displayed in the e-format e.g. 2.3456e7 which equals 2.3456 x 10

Custom Search

Telephone: +44 (0)1252 405186

Introducing

Nature of Thermal Spray Coatings

Surface Engineering in a Nutshell

Surface Engineering Forum

Thermal Spray Gun Repair Service

Plasma Consumable Parts

Thermal Spray Powder Supplies

**Applications:**

Thermal Spray Coatings on Carbon and Glass Fibre Reinforced Polymers

HVOF Coating of Paper Making Roll

Abradable Coatings

**Thermal Spray Processes:**

Combustion Wire Thermal Spray Process

Combustion Powder Thermal Spray Process

Arc Wire Thermal Spray Process

Plasma Thermal Spray Process

HVOF Thermal Spray Process

Detonation Thermal Spray Process

Plasma Flame Theory

Cold Spray Coating Process

Wear and Use of Thermal Spray Coatings

Corrosion and Use of Thermal Spray Coatings

Glossary of Thermal Spray and Surface Engineering Terms

Image Directory for Thermal Spray Coatings

Plasma Gas Flow Information

Plasma Gas Flow Correction Calculator

Contact Form

Links to other interesting sites related to thermal spray and surface engineering

Reciprocal Links

Periodic Table of the Elements

SI Units

Calculators for Conversion between Units of Measurement

Hardness Testing

Surface Engineering Message Board Archive

Surface Engineering Message Board Archive Index

Search This Site

Photography Gallery2

Photography Gallery3

© Copyright Gordon England