What are Dimensions ?

For example, consider water in the beaker shown here:
Can be calculated or derived by multiplying or dividing fundamental dimensions.
Exampls: area, velocity, density and volume
2. Derived Dimensions -
Mass, Length, Time, Temperature, Moles and sometimes Force
Fundamental dimensions can be directly measured or are independently defined.
All other dimensions can be obtained from the fundamental dimensions.
1. Fundamental Dimensions -
There are two types of dimensions.
In science and engineering, numbers without units are not useful (unless they happen to be dimensionless).





has derived dimensions made up of a combination of fundamental dimensions:
is a fundamental dimension.
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Ch 1, Lesson B, Page 1 - What are Dimensions ?