Absolute, Relative, and Percentage Error
Arithmetic Mean or Average Value:
Let the value obtained in n measurements are a1, a2, a3...., an. Then, the Arithmetic Mean or Average Value of...
Accuracy, Precision and Errors
Error:
The result of every measurement by any measuring instrument contains some uncertainty. This uncertainty is called error. Every calculated quantity which is based on...
Measurement of Mass and Time
Measurement of Mass:
Mass is a basic property of matter. It does not depend on the temperature, pressure or location of the object in space....
Measurement of Length
Measurement of Length:
You are already familiar with some direct methods for the measurement of length.
For example, a meter scale is used for lengths from...
Measurement, SI units and System of Units
The comparison of any physical quantity with its standard unit is called measurement.
Physics is a quantitative science, based on measurement of physical quantities. Certain...
Nature of Physical Laws
Science has many disciplines, physics being one of them. The word physics has its origin in a Greek word, which means ‘nature’. Physics seeks...
Fundamental Forces in Nature
There are four fundamental forces in the nature that govern the diverse phenomena of the macroscopic and the microscopic world.
These are the 'gravitational force', the...
Physics-scope and excitement
The scope of physics is wide, covering a tremendous range of magnitude of physical quantities. Basically, There are two domains of interest: macroscopic and...