The question has also been raised whether the action of gravitation is absolutely instantaneous. The question whether this cause modifies gravitation admits of an easy test from observation.
Shabaka stone in English The Shabaka Stone, sometimes Shabaqo, is a relic from the Nubian Twenty-fifth Dynasty of Egypt incised with an Egyptian religious text. It is a composition of breccia measuring 91 cm on the left in height and 95 cm on the right as well as 137 cm in width.
Shabaka Stone on display in The British Museum. The stone measures 0.66 by 1.37 metres (2 ft 2 in by 4 ft 6 in). The Shabaka Stone, sometimes Shabaqo, is a relic incised with an ancient Egyptian religious text, which dates from the 25th dynasty. In later years, the stone was likely used as a millstone, which damaged the hieroglyphics. This damage is accompanied by other intentional defacements, leaving the hieroglyphics in poor condition.