Gourt > Science > Technology > Mechanical Engineering > Propulsion > Aerospace > Space > Unproven Concepts
A concept is an abstract idea or a mental symbol, typically associated with a corresponding representation in language or symbology, that denotes all of the objects in a given category or class of entities, events, phenomena, or relationships between them. Concepts are abstract in that they omit the differences of the things in their extension, treating them as if they were identical. They are universal in that they apply equally to every thing in their extension. Concepts are also the basic elements of propositions, much the same way a word is the basic semantic element of a sentence.
Concepts are bearers of meaning, as opposed to agents of meaning. A single concept can be expressed by any number of languages. The concept of DOG can be expressed as dog in English, Hund in German, as chien in French, and perro in Spanish. The fact that concepts are in some sense independent of language makes translation possible - words in various languages have identical meaning, because they express one and the same concept.
Locke
John Locke's description of a general idea corresponds to a description of a concept. According to Locke, a general idea is created by abstracting, drawing away, or removing the common characteristic or characteristics from several particular ideas. This common characteristic is that which is similar to all of the different individuals. For example, the abstract general idea or concept that is designated by the word "red" is that characteristic which is common to apples, cherries, and fire engines. The abstract general idea or concept that is signified by the word "dog" is the collection of those characteristics which are common to Airedales, Collies, and Terriers. More on [ Concept ]
Alternative :: Physics
Alternative :: Relativity
Unproven Concepts :: Energy
@simeons What role does trust play in cloud computing client/vendor relationships compared to older concepts? Small unproven vendors?
stankov (stankov) Wed, 09 Dec 2009 22:33:33 -0000
@simeons What role does trust play in cloud computing client/vendor relationships compared to older concepts? Small unproven vendors?
Field Resonance Propulsion - Postulates magnetic/gravity interactions.
Gravitational Propulsion Research Group - Yahoo group for research and theory in alternative science,gravitational propulsion, and time study.
Meta Description: [ gravitationalpropulsionstevenson: Gravitational Propulsion ]
Gyroscopes As Propulsion Devices - Gyroscope based technology could provide an alternative form of propulsion.
Meta Description: [ Gyroscopes have many uses, this site explains how a gyroscope works and what they can be used for. The site also looks at the possible uses of gyroscope based propulsion (gyroscopic propulsion). ]
Quasi Moto: Theoretical Propulsion Physics - Considers unconventional means of space propulsion (and any ancillary systems), with the aim to determine their feasibility or basis in fact.
Theory for Gravitic Propulsion - A theoretical discussion of using gravity as a means of interstellar space propulsion. Touches on the theories of matter, energy, and space time.
Meta Description: [ Theory for the Structure of Space-Time, Interactions of Energy with Atoms and Gravitic Propulsion ]
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