Can you explain how come the speed of light is constant, and what that means on a macro level of the universe?
Asked by Justas Janauskas
Amazing question Justas!
I can state two short but quite complete answers:
Implying the speed of light to be a constant is the only way in which you can conserve the laws of electrodynamics passing from a inertial system to an another one.
The speed of light is constant thus a ray of light emitted from a source (for example, a galaxy) takes a certain amount time to reach an observer at a distance D. Hence the observer is not looking a real time image, but he is experiencing a delay. The lights of stars, galaxy we see on the night sky are delayed proportionally to their distance from the earth.
Hope to have granted your curiosity!
No comments yet
Be the first to comment
Download Qoorio to talk & learn from other Humans
MORE INSIGHTS YOU MIGHT LIKELearn more by discovering other insights