Assertion: relativity's theory | /r/HasProperty | geometrical
Facets:
value: in character
type: OTHER
value: essentially
type: DEGREE
Source sentences:
text: General relativity is a geometrical theory which postulates that the presence of mass and energy "curves" spacetime, and this curvature affects the path of free particles (and even the path of light).
text: However, the invariance property of physical laws implied in the principle, coupled with the fact that the theory is essentially geometrical in character (making use of non-Euclidean geometries), suggested that general relativity be formulated using the language of tensors.