Light is stationary in chapter VI.
Light is stationary in nature. To support this, we have assumes following cases.
Let there be “A” light source. “B” be the object and “C” be the observer.
Case 1: Light is in visible range and observer is human.
In this case, light fall on object and observer can see the object.
Case 2: Light is in ultra violet region and observer is still human.
In this case, light fall on object and observer cannot see the object clearly.
Case 3: Light is in ultra violet region and observer is Dog.
In this case, light fall on object and observer can see the object.
Here, electromagnetic radiation frequency changes, so the changes the perception of the observer. So see the object, it is necessary that electronic magnetic radiation suitable as per observer should fall on object and then on detector eye of the Observer.
Depending on nature, eye detection system changes to different electronic radiation system.
Conclusion:
So light is not moving. It is electronic radiation moving from source to object and then to observer eyes that make object visible. Light is not moving. The electronic radiation enlighten object. But if observer eye do not suitable for electronic radiation, object is not visible to observer. If eye is suitable for electronic radiation, then observer can see the object.
Light is just enlighten of object, light do not exist. If it exist it is stationary.
Hence, Light is stationary.