Wednesday, May 19, 2010

Quantities and Units

Quantities and Units
1. Quantity has two components: Value and units. Quantity can be divided into: fundamental quantities and derived quantities.
2. Fundamental quantities are convention­ally established by the International Con­ference on Weight and Measurement. For example, length in metre, mass in kilogram, and time in second.
3. The derived quantities are made of the fundamental quantities. For example, volume unit is cubic metre (m3), arranged from fundamental quantity length.

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