If the rates of vibration of the two tuning-forks at the two stations could be maintained precisely the same, the two arms would rotate in synchronism, but as this uniform vibration cannot be exactly A / 4 3/ Line /‘ --- /4 -- ?
Passing by certain fragments of stone vessels, found at Cnossus, and coincident with forms characteristic of the IVth Pharaonic Dynasty, we reach another fairly certain date in the synchronism of remains belonging to the XIIth Dynasty (c. 2500 B.C. according to Petrie, but later according to the Berlin School) with products of Minoan Period II.
He is usually dated about 1900 B.C. This brings us to the next and most certain synchronism, that of Minoan Periods III.
To assume a cylindrical form of primary wave would be justifiable only when there is synchronism among the secondary waves issuing from the various centres.
- A terminus a quo for the Baptism is the synchronism of the commencement of the Baptist's public ministry with the fifteenth year of the rule ('i yepovia) of Tiberius.
- A terminus ad quem for the Baptism is the synchronism of the first Passover mentioned after it with the forty-sixth year of the building of Herod's Temple.
(when interpreted on the assumption stated above), and another at 2lephantine of an uncertain year of Tethmosis III., tally well with each other (1550-1546, 1474-1470 nc.) and with the Babylonian synchronism (not yet accurately determined) under Amenhotp IV.
This is said to have hapC, pened in 356 B.C. on the October night on which Alexander the Great came into the world, and, as Hegesias said, the goddess herself was absent, assisting at the birth; but the exactness of this portentous synchronism makes the date suspect.