Physical Quantities and Their Measurement

The analysis of physical phenomena and processes requires the measurement of physical quantities. A physical quantity is measured in terms of a small part of it. The small part is conventionally adopted as a unit of measurement of the quantity. We can choose such a unit for every quantity independent of other quantities. However, it is helpful to first establish the units of a few quantities which are called base or fundamental quantities. The corresponding units are called base or fundamental units. The units of the remaining physical quantities are expressed in terms of these base units. These quantities are called derived quantities and their units, derived units. To firm up your basic knowledge we have videos on Base and Derived Quantities and Their Units, Principle of Homogeneity of Dimensions, Order of Magnitude Calculation, Uses of Dimensional Analysis etc.
    Base And Derived Quantities And Their Units 29:07 Basic
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    Base And Derived Quantities And Their Units II 34:45 Basic
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    Base And Derived Quantities And Their Units III 1:03:09 Basic
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    Dimensions And Principle Of Homogeneity 39:12 Basic
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    Order Of Magnitude Calculation 41:32 Basic
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    Problems On Dimensional Analysis 35:21 Basic
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    Problems On Dimensional Analysis II 54:47 Basic
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    Uses Of Dimensional Analysis 57:16 Basic
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