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In string theory, spacetime is ten-dimensional (nine spatial dimensions, and one time dimension), while in M-theory it is eleven-dimensional (ten spatial dimensions, and one time dimension). In order to describe real physical phenomena using these theories, one must therefore imagine scenarios in which these extra dimensions would not be ...
11th dimension may refer to: 11-dimensional supergravity , a field theory that combines the principles of supersymmetry and general relativity. 11-dimensional spacetime, which appears in M-theory , a proposed "master theory" that unifies the five superstring theories
M-theory aims to unify quantum mechanics with general relativity's gravitational force in a mathematically consistent way. In comparison, other theories such as loop quantum gravity are considered by physicists and researchers to be less elegant, because they posit gravity to be completely different from forces such as the electromagnetic force.
Unwarranted variations in medical practice refer to the differences in care that cannot be explained by the illness/medical need or by patient preferences. The term “unwarranted variations” was first coined by Dr. John Wennberg when he observed small area (geographic) and practice style variations, which were not based on clinical rationale. [5]
Furthermore, he argued that M-theory's long wavelength limit, i.e. when the quantum wavelength associated to objects in the theory appear much larger than the size of the 11th dimension, needs 11-dimensional supergravity descriptors that fell out of favor with the first superstring revolution 10 years earlier, accompanied by the 2- and 5-branes.
Health policy can be defined as the "decisions, plans, and actions that are undertaken to achieve specific healthcare goals within a society". [1] According to the World Health Organization, an explicit health policy can achieve several things: it defines a vision for the future; it outlines priorities and the expected roles of different groups; and it builds consensus and informs people.
Superstring theory is an attempt to explain all of the particles and fundamental forces of nature in one theory by modeling them as vibrations of tiny supersymmetric strings. 'Superstring theory' is a shorthand for supersymmetric string theory because unlike bosonic string theory , it is the version of string theory that accounts for both ...
Tacit knowledge, as distinct from explicit knowledge, is an influential term developed by Polanyi in The Tacit Dimension [18] to describe among other things the ability to do something without necessarily being able to articulate it: for example, being able to ride a bicycle or play a musical instrument without being able to fully explain the ...