Cochran, Russ and Maclean, Joie (2012) Handbook of dimensional analysis & physical quantities. Academic Studio, Delhi, India. ISBN 9788132309000
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Abstract
A physical quantity is a physical property that can be quantified by measurement. Formally, the International Vocabulary of Metrology', 3rd edition (VIM) defines quantity as: property of a phenomenon, body, or substance, where the property has a magnitude that can be expressed as a number and a reference Hence the value of a physical quantity O is expressed as the product of a numerical value {0} and a unit of measurement [O]. Q = {9} x [0] Quantity calculus describes how to do math with quantities. If the temperature T of a body is quantified (measured as 25 degrees Celsius this is written T= 25 x °C = 25 °C where T is the symbol of the physical quantity "tem If a person weighs 120 pounds, then "120" is the numerical value and "pound" is the unit. This physical quantity mass would be written as "120 lbs", Or m = 120 16s An example employing SI units and scientific notation for the number, might be a measurement of power written as P=42.3 x 10 W
| Item Type: | Book |
|---|---|
| Subjects: | Q Science > QC Physics |
| Divisions: | Electronic Books |
| Depositing User: | Esam @ Hisham Muhammad |
| Date Deposited: | 02 Jan 2024 06:13 |
| Last Modified: | 02 Jan 2024 06:13 |
| URI: | http://odlsystem2.utm.my/id/eprint/4293 |
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