| Experiment 1 | Experiment 2 | Experiment 3 |
Person A standing still on the Earth surface (person B’s perspective), and person B onboard a train moving at 60 km/h (person B’s perspective) | Caesium clocks onboard two jets, one flying eastward, the other westward | Spectrophotometric measurement of betanin absolute concentration | |
Relative measurement 1 (person A’s perspective) | Person A standing still on the Earth surface | Jet flying eastward | Sample: betanin solution of unknown concentration |
Relative measurement 2 (person A’s perspective) | Person B onboard a train moving at 60 km/h | Jet flying westward | Blank control |
Common reference | Person C occupying any independent spacetime condition, different from those occupied by A and B | Reference atomic clock maintained at the USA Naval Observatory (at rest, on the Earth surface), occupying an independent spacetime condition, different from those occupied by the jets | Anything filling the cuvette holder (e.g., air) against which both A535 values are measured |
Relative readings to be compared | Comparative time dilation or comparative duration of each second experienced by persons A and B, as measured by person C | Comparative time dilation relative to Earth, or comparative duration of each second in both jets, as measured from a fixed point on the Earth surface | A535 readings of sample and blank control |
Absolute value obtained | Which person is moving faster in absolute terms | Which jet is moving faster in absolute terms | Betanin absolute concentration |