| Answer | Crossword Clue |
|---|---|
| MASS | Theory of Relativity component |
| MASS | Part of the theory of relativity |
| FOURTHDIMENSION | Hypothetical unit in theory of relativity |
| EINSTEIN | Developer of the theory of relativity |
| BERN | Where Einstein published his special theory of relativity |
| BERN | City where Einstein developed his special theory of relativity |
