UnitedHealth Group grew to serve more people more comprehensively but did not perform up to our expectations, and we are aggressively addressing those challenges to position us well for the years ahead, and return to our long-term earnings growth rate target of 13 to 16%.
Andrew Witty, chief executive officer of UnitedHealth Group
- General relativity (Wikipedia)
General relativity, also known as the general theory of relativity and Einstein’s theory of gravity, is the geometric theory of gravitation published by Albert Einstein in 1915 and is the current description of gravitation in modern physics. General relativity generalizes special relativity and refines Newton’s law of universal gravitation, providing a unified description of gravity as a geometric property of space and time or four-dimensional spacetime. In particular, the curvature of spacetime is directly related to the energy and momentum of whatever matter and radiation are present. The relation is specified by the Einstein field equations, a system of second order partial differential equations.