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

Mechanical advantage

Science; General science

Ratio of the force exerted by a machine (the output) to the force exerted on the machine, usually by an operator (the input). The term is useful in discussing a simple machine, where it becomes a ...

In physics, the term work refers to the transference of energy that occurs when a force is applied to a body that is moving in such a way that the force has a component in the direction of the body's ...

Air mass

Science; General science

In meteorology, an extensive body of the atmosphere which is relatively homogeneous horizontally. An air mass may be followed on the weather map as an entity in its day-to-day movement in the general ...

Infection and mast cells

Science; General science

Mast cells normally are present within all tissues in humans and other mammals. They may be especially numerous beneath the surfaces of the skin, the respiratory system, and the gastrointestinal and ...

Biocavity laser

Science; General science

Lasers are an integral part of today's health care delivery system. They are used in the laboratory analysis of human blood samples; serve as surgical tools that kill, burn, or cut tissue; and are ...

Transportation system security

Science; General science

Recent events worldwide have radically changed how security is viewed in the transportation environment. Previously, most transportation security operations were concerned with vandalism and theft. ...

Expert systems

Science; General science

Methods and techniques for constructing human-machine systems with specialised problem-solving expertise. The pursuit of this area of artificial intelligence research has emphasised the knowledge ...