I think just the identity transformation.jk22 said:does SR change the direction of light and if yes is it then possible to find a transformation keeping the velocity of light invariant and not only its speed ?
Invariance of velocity refers to the principle that the velocity of an object remains constant, regardless of the observer's frame of reference. This means that the speed and direction of an object's motion will not change, even if it is viewed from different perspectives.
The concept of invariance of velocity is a fundamental principle of the theory of relativity. It is one of the key ideas that led Albert Einstein to develop his theory, as it challenges the traditional idea of absolute space and time and highlights the importance of considering an observer's frame of reference when measuring velocity.
Yes, invariance of velocity can be observed in everyday life. For example, when you are driving a car at a constant speed on a straight road, the velocity of the car will remain the same regardless of whether you are looking at the speedometer from the driver's seat or from the sidewalk. This is because the car's velocity is independent of the observer's frame of reference.
Invariance of velocity is a fundamental principle of physics and has been observed to hold true in all experiments and observations. However, it is important to note that it only applies to objects moving at a constant velocity in a straight line. When considering objects that are accelerating or moving in a curved path, the principle of invariance of velocity may not apply.
Invariance of velocity is used in many practical applications, such as in GPS technology and space missions. GPS satellites use the principle of invariance of velocity to accurately calculate the position and velocity of objects on Earth's surface. In space missions, the principle is used to calculate the trajectory and velocity of spacecraft, taking into account the effects of gravity and the motion of other celestial bodies.