Timeline for Why is the speed of light used to define the fourth axis of spacetime?
Current License: CC BY-SA 4.0
2 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Oct 24, 2018 at 12:59 | comment | added | Shen | The statement "the speed of light is used to define the fourth axis of spacetime" is just a rough and not very strict statement. A more strict statement is: the speed of light along with time are used to define the fourth axis of spacetime. | |
| Oct 23, 2018 at 11:44 | history | answered | Alfred Centauri | CC BY-SA 4.0 |