noun
special theory of relativity
Physics term referring to Einstein's 1905 theory dealing with inertial frames and the constancy of the speed of light.
特殊相対性理論は、光速度不変の原理に基づいている。
The special theory of relativity is based on the principle of the constancy of the speed of light.
General theory of relativity, which extends special relativity to include gravity and accelerated frames.
Compound of 特殊 (special) + 相対性 (relativity) + 理論 (theory), a direct translation of the English term.