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Gravitational energy from visible matter accounts for 26–37% of the observed total mass–energy density. [15] Therefore, to fit the concept of a "zero-energy universe" to the observed universe, other negative energy reservoirs besides gravity from baryonic matter are necessary. These reservoirs are frequently assumed to be dark matter. [16]
A zero energy building (ZEB), a building's use with zero net energy consumption and zero carbon emissions; Zero-Net-Energy USA Federal Buildings President Obama has ordered that 15% of U.S. Federal buildings be zero-net-energy by 2015 and 100% of all new buildings by 2030; Zero-energy universe, a concept that states that the total amount of ...
The Elegant Universe, Nova episode about the search for the theory of everything and string theory. Theory of Everything, freeview video by the Vega Science Trust, BBC and Open University. The Theory of Everything: Are we getting closer, or is a final theory of matter
Zero-emissions vehicle; 0 energy or Zero energy zero energy building (ZEB), a building's use with zero net energy consumption and zero carbon emissions; Zero-energy Universe concept that the Universe's total amount of energy is exactly zero; 0 element, or Zero element, one of several generalizations of the number zero to other algebraic structures
In the zero-energy universe model ("flat" or "Euclidean"), the total amount of energy in the universe is exactly zero: its amount of positive energy in the form of matter is exactly cancelled out by its negative energy in the form of gravity. [2] It is unclear which, if any, of these models accurately describes the real universe.
In 1973, he proposed that the universe is a large-scale quantum fluctuation in vacuum energy. This is called vacuum genesis or the zero-energy universe hypothesis. He has been quoted as saying, "the universe is simply one of those things that happens from time to time." [14] In 1967, he began working at Columbia University as a research assistant.
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