Every reference-body (co-ordinate system) has its own particular time; unless we are told the reference-body to which the statement of time refers, there is no meaning in a statement of the time of an event.
Where these words come from
- 95% sureThese words were traced back to where they first appeared. That source is listed below.
- Relativity: The Special and General Theory; Exact wording and attribution checked. Einstein explaining that statements of time require a specified reference frame.
- Relativity: The Special and General Theory
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