The Aurora Experiment

The observer comprehends this. The Aurora Effect appears in one-way measurements. However, conducting a similar experiment using two signals or light beams going back and forth between clocks is physically possible. The observer performs a similar experiment, determining deviation in both directions separately. The following figure shows the result of his measurements.

The Aurora Effect in a two-way experiment

The experiment shows a predictable result. The signal going in the forward direction shows deviation N5-X1-X2-X3-X4. At the same time, the opposite signal shows deviation N5-Y1-Y2-Y3-Y4 (Y2 coincides with X2, Y4 coincides with X4).

The observer watches both results and comprehends this. In a round-trip experiment, the duration appears as the sum of each duration of a signal moving in forward and backward directions.

However, despite the deviation of each one-way measurement, the total duration of a round-trip experiment remains constant. It happens because each deviation (at any measurement time) shows the same magnitude but the opposite sign.

The observer adds the duration of the forward propagation of the signal to the duration of the backward propagation. For example, the duration of forward propagation becomes N6-N0 at the orientation of the Earth of P1. The duration of backward propagation becomes N3-N0 at the same orientation of the Earth. It gives (N6-N0) + (N3-N0) = N2-N0. Calculations at any other orientation of the Earth give the same value. As a result, the observer has a straight line on the plot of N2-Z1-Z2-Z3-Z4.

The observer comprehends this. It is also possible to use a physical experiment that summarizes the duration of both measurements. In that case, the measurement method becomes a round-trip experiment. This experiment also shows a constant value in a round-trip measurement and the Aurora Effect in each one-way measurement.

The observer uses two extra elements in case of a round-trip experiment. He puts two semitransparent mirrors facing each other at each point of measurement. In that case, some of the light signal power from one clock goes through the mirror to be detected by another clock. Most of that power mirrors back from the mirror to the clock.

The observer easily determines the duration of a round-trip experiment by each clock by comparing its indication at the beginning and end of the measurement. To his delight, both clocks show a constant duration of any round-trip experiment regardless of their orientation.

That is a combined experiment that shows the Aurora Effect and a constant duration of a round-trip experiment.

The observer also understands this. The Aurora Experiment does not need anything like physical Time and ”a clock synchronization method.” Hopefully, he had read the article about the human illusion of Time before the experiment (ref. # 1). Otherwise, he would have failed the experiment, like many other researchers who willingly or not include the category of physical Time in their experiments.