I have a question about how an observer sees the speed of light or the distances when at rest.
Suppose two events occur simultaneously in $A$ and $B$. If someone in $X$ is watching, they will see what happens first in $A$ and then in $B$ because the light will take less time to reach $A$ to $X$ than $B$ to $X$ because the distance is shorter.
Now let's say there's a light detector in $A$ and a light detector in $B$ and a flash of light coming from a midpoint between $A$ and $B$. Hopefully you'll see the $A$ detector react first and then the $B$ detector.
My doubt is: if I observe the flash from the midpoint until it reaches the detectors,
Will I see the light go faster towards $A$ than towards $B$ or will I see the shorter distance from the midpoint to $A$ than from the midpoint to $B$ so I can see the detector of $A$ react first?