About Heather Expertise Amature astronomer, can answer most simple questions about planets, constellations, stars, galaxies and more. No Physics questions please
Question What is the speed of sight? Does it have a speed or is there only speed of light? If I look at the moon for instance, does my sight carry all the way to the moon instantly, or does the light from the moon travel all the way to my eye faster than my eyesight can get there, or is there some halfway point where my sight meets the light? How do we know that the speed of sight is not capable of covering the distance from me to a star and preventing me from seeing the star as it is now and not waiting many light years for the light to get to my eye?
Answer I'm not entirely sure how to answer this question properly. I know what your saying, but it isn't quite the case. The speed of sight is non existant. We only see light being emitted from a certain distance. The light IS the speed of sight. Without the light we would not see at all, so there is no "half way" point where you see light before it even exists at a point in time, if this were the case, we would see nothing, do you understand? What I'm trying to say is that sight is not faster then light, sight IS light, and there is no way to see light at a point in time before it hits us.
