Notes of “Special Theory of Relativity” for BSc written by Mr.Nasir Pervaiz Butt. These notes are very helpful to prepare Modern Physics for BSc and are in accordance with paper pattern of Punjab University-Lahore, GCU-Lahore, GCU-Faislabad, University of Sargodha-Sargodha and all other universities of Punjab and Pakistan.

In physics, special relativity (SR, also known as the special theory of relativity or STR) is the accepted physical theory regarding the relationship between space and time. It is based on two postulates: (1) that the laws of physics are invariant (i.e., identical) in all inertial systems (non-accelerating frames of reference); and (2) that the speed of light in a vacuum is the same for all observers, regardless of the motion of the light source…

• Trouble with Classical Mechanics
• Postulates of Special Theory of Relativity
• The Lorentz Transformation
• Derivation of Lorentz Transformation
• Inverse Lorentz Transformation
• The Transformation of Velocities
• Inverse Velocity Transformation
• Lorentz Velocity Transformations(under non-relativistic limit)
• Lorentz Transformation of Velocity
• Consequence of Lorentz Transformation
• Relativity of Length
• Relativity of Mass
• Relativistic Energy