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In other words, the cylinder condition of the previous development is dropped, and the stress–energy now comes from the derivatives of the 5D metric with respect to the fifth coordinate. Because the energy–momentum tensor is normally understood to be due to concentrations of matter in four-dimensional space, the above result is interpreted ...
Third space is the image space that refers to the process whereby the images has produced new kind of space. The images may be in different form and shape; ranging from painting to photograph, from portrait to post card, and from religious theme to entertainment.
The social production of space is a concept in the sociology of space which contends that space is neither a thing nor a container, but a product and means of production. Thus, space is produced and constructed socially and through a set of human relations. [1] It was pioneered by philosopher Henri Lefebvre in his 1974 book La Production de l ...
A list of metaphors in the English language organised alphabetically by type. A metaphor is a literary figure of speech that uses an image, story or tangible thing to represent a less tangible thing or some intangible quality or idea; e.g.,
Spoons are used as a metaphor and visual representation for energy rationing. Spoon theory is a metaphor describing the amount of physical or mental energy that a person has available for daily activities and tasks, and how it can become limited. The term was coined in a 2003 essay by American writer Christine Miserandino.
For example, on the International Space Station the Earth's gravity is nearly 90% as strong as at the surface. Objects orbiting in space would not remain in orbit if not for the gravitational force, and gravitational fields extend even into the depths of intergalactic space. [5] [6] [7] The dark side of the Moon illuminated by the Sun.
Nicola Armaroli, Vincenzo Balzani: Energy for a Sustainable World: From the Oil Age to a Sun-Powered Future, Wiley-VCH 2011, ISBN 978-3-527-32540-5. Nicola Armaroli, Vincenzo Balzani and Nick Serpone: Powering Planet Earth: Energy Solutions for the Future, Wiley-VCH 2013, ISBN 978-3-527-33409-4.
These three possibilities correspond to parameter k of (0) flat space, (+1) a sphere of constant positive curvature or (−1) a hyperbolic space with constant negative curvature. Here the radial position has been decomposed into a time-dependent scale factor, R ( t ) {\displaystyle R(t)} , and a comoving coordinate, r {\displaystyle r} .