Concept Of Measurement

Measurement

Measurement is the process of assigning number to event or measurement is the process of assigning

number to observation

NB:

i)     Every measurement has two parts include

a)       Number part

b)      Unit part

Number Part

This gives the results or magnitude of the comparison or event or observation

Unit Part

This identifies the particular unit used to make the measurement.

Example, 30cm

130 ≡ Number part

Cm ≡ unit part

ii)    Each part of measurement is equally important and must be included if the measurement is to be meaningful and useful

iii)  The complete measurement (100km, 1kg or 5s) is called a physical quantity

iv)  The international system of unit usually abbreviated as SI Unit and we shall use throughout physics course

Physical Quantities

Physical quantity is a property that can be measured with measuring instrument.

It categories into two includes

i)        Fundamental quantities

ii)       Delivered quantities