| Link | Quote | Stars | Tags | Author |
| 9b6961b | It is not possible to measure uniform motion in any absolute way. | Relativity Simply Explained | ||
| ba51d44 | If an astronaut traveled as fast as light his clock would stop completely. | Relativity Simply Explained |
| Link | Quote | Stars | Tags | Author |
| 9b6961b | It is not possible to measure uniform motion in any absolute way. | Relativity Simply Explained | ||
| ba51d44 | If an astronaut traveled as fast as light his clock would stop completely. | Relativity Simply Explained |