Inside the moving compartment of Figure 35.4, light travels a certain distance to the front end and a certain distance to th back end of the compartment. How do these distances compare as seen in the frame of reference of the moving rocket?


W HO FIGURE 35.4 From the point of view of the observer who travels inside the compartment, light from the source travels equal distances to both ends of the com- partment and therefore strikes both ends simultaneously.​