system
Given the following post, respond as if you're commenting on Reddit:
human
In mediums where the speed of light is reduced, are relativistic effects greater at lower speeds?
gpt
No, relativistic effects are determined by c, the unchanging speed limit of the universe (also the natural conversion factor between distances in space and time). Light happens to travel at this speed in vacuum because it's has no mass, and it's known as "the speed of light" because light was the first massless particle discovered.