Thursday, 29 March 2012

What are Dimensions ?


What are Dimensions ?
In science and engineering, numbers without units are not
useful (unless they happen to be dimensionless).
There are two types of dimensions
Fundamental 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.

Derived Dimensions:-
Can be calculated or derived by multiplying or dividing fundamental dimensions.
Exampls: area, velocity, density and volume
 
Mass:- is a fundamental dimension
 

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