Physical World and Measurement

Random Error

Errors arising out of unknown causes with varying value in each measurement

Systematic Error

Errors arising out of known causes

Constant Error

Multiple measurements show the same constant error Constant Error Explanation Weighing machine showing 1 kg in the scale when no…

Dimensions

Expressing physical quantity based on the fundamental unit of mass, length and time

Avgadro Hypothesis

Actual volume occupied by the atom is 2/3 rd of the volume of individual atoms in substance Avgadro Hypothesis Explanation…

MKS System

The units are meter, kilogram and second in this measurement system

FPS System

The units are foot, pound and second in this measurement system

CGS System

The units are centimeter, gram and second in this measurement system

Derived Unit

Units which are derived from fundamental units

Fundamental Unit

The base units which are not dependent on any other units