However , eddington 's theory of gravity only worked for empty space and didn 't include any source of energy such as matter , making it an incomplete theory .
Last year he appointed sir rod eddington , an ex-boss of british airways , to study the long-term impact of transport on the economy .
去年,他委托英航前总裁rodeddington爵士研究交通政策对经济的长期影响。
Although eddington played a significant role in developing general relativity , during the following decades he became more interested in finding a theory to unify gravity and quantum mechanics - a task that is still being studied today .
A body mr rudd appointed under sir rod eddington , a businessman , is due to report soon on much bigger demands for public cash , such as for railways , ports and energy grids .
In their analysis , the scientists found that a key characteristic of eddington 's revised theory of gravity is that it reproduces einstein gravity precisely in the vacuum conditions ( with no matter ) , but it produces new effects when matter is added .
In 1924 , eddington proposed a new " gravitational action " as an alternative to the einstein-hilbert action , which could serve as an alternative starting point to general relativity .
The study , conducted by sir rod eddington , a former boss of british airways , called in 2006 for piecemeal improvements to deal with britain 's chronic transport congestion . These included incremental upgrades to the railways and an expansion of the road network .