General science

General science

A variety of science subjects concerning the fundamental knowledge about different aspects of our world and their underlying principles.

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General science

rosidae

Science; General science

A former widely recognized subclass of Magnoliophyta (angiosperms or flowering plants). Deoxyribonucleic acid (DNA) and morphological studies have demonstrated that this group includes many more ...

matrix mechanics

Science; General science

A formulation of quantum theory in which the operators are represented by time-dependent matrices. For a discussion of quantum-mechanical operators and other information essential to an ...

panderichthys

Science; General science

A fossil lobe-finned (sarcopterygian) fish from rock strata of the Baltic region dating to the Middle–Late Devonian Period (about 372–368 million years ago), which provides key evidence about the ...

permineralization

Science; General science

A fossilization, or taphonomic, process characterized by the deposition of a mineral or mineraloid (an amorphous “gel mineral”) in the pore spaces of an organism's body structures. Pores in bone, ...

A foundational quantity in physics that is always conserved in isolated systems, defined in classical mechanics as the product of mass and velocity. An equivalent definition that is better suited to ...

pantograph

Science; General science

A four-bar parallel linkage, with no links fixed, used as a copying device for generating geometrically similar figures, larger or smaller in size, within the limits of the mechanism. In the ...

analytic hierarchy

Science; General science

A framework for solving a problem. The analytic hierarchy process is a systematic procedure for representing the elements of any problem. It organizes the basic rationality by breaking down a ...