UNITS,DIMENSIONS AND ERROR ANALYSIS

PHYSICAL UNITS ARE DIVIDED INTO THREE,THEY ARE
FUNDAMENTAL UNITS : UNITS WHICH ARE BASIC AND THEY CANNOT BE DERIVED FROM OTHER UNITS. EG: TIME,
THERE ARE 7 FUNDAMENTAL SI UNITS WHICH WE USE TODAY.

MASS - KILOGRAM
LENGTH - METRE
TIME - SECOND
TEMPERATURE - KELVIN
AMOUNT OF SUBSTANCE - MOLE
LUMINOUS INTENSITY - CANDELA
ELECTRIC CURRENT - AMPERE

DERIVED UNITS: UNITS WHICH ARE DERIVED BY THE COMBINATION OF ONE OR MORE UNITS. EG: SPEED,VOLUME,AREA

SUPPLEMENTARY UNITS - EG : RADIAN AND STERADIAN {SOLID ANGLE UNIT}