# ทฤษฎีสัมพันธภาพเฉพาะของไอสไตน์
## Noun (N)
### Sense: a physical theory of relativity based on the assumption that the speed of light in a vacuum is a constant and the assumption that the laws of physics are invariant in all inertial systems
- special relativity
- special theory of relativity
- special relativity theory
- Einstein's special theory of relativity