Write two fundamental methods of measurment? Briefly
Answers
Methods of Measurement
The different methods of measurement are explained below in details.
Direct Method of Measurement – In this method of measurement, the unknown quantity is directly compared with the standard quantity. The result of the quantity is expressed in number. It is the most common method of measuring the physical quantities like length, temperature, pressure, etc.
Example: The physical balance directly measures the weight of the matter.
Indirect Method of Measurement – The direct measurement gives the inaccurate results in most of the cases. Hence, the direct method is rarely preferred for measurement. In indirect method of measurement, the physical parameters of the quantity are measured by the direct method, and then the numerical value of the quantity is determined by the mathematical relationship.
Example: The length, breadth and height of the substance is measured by the direct method and then by the help of the given relation the weight of the substance is known.
Weight = Length X Breadth X Height X Density......