Galilean transformation equations derivation

Let there are two inertial frames of references S and S’. S is the stationary frame of reference and S’ is the moving frame of reference. At time t=t’=0 that is in the start, they are at the same position that is Observers O and O’ coincides. After that S’ frame starts moving with a uniform velocity v along x axis.


Let an event happen at position P in the frame S’. The coordinate of the P will be x’ according to the observer in S’ and it will be x according to O in S. Continue reading “Galilean transformation equations derivation”

The concept of Relativity and frames of reference

The concept of Relativity and frames of reference:

The term relativity comes from the word “relative that is in relation”. In this universe, everything is relative, there is nothing like absolute rest. If you think that you are sitting somewhere and you are in the state of rest, then my dear you are wrong. You are also in the state of motion, because if someone is able to see you from outside the earth (suppose from moon), then you are also moving. Therefore, everything is relative.

Here question arises with respect to which we can study the motion of another object? This problem is solved with the concept of frame of reference.

Definition: The frame of reference is defined as any coordinate system with respect to which one can study the motion of the another object. For example, a bus can be a frame of reference with respect to which one can study the motion of another object.

Types of the frame of reference: Continue reading “The concept of Relativity and frames of reference”