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

Neon glow lamp

Science; General science

A low-wattage lamp often used as an indicator light or as an electronic circuit component. The neon lamp usually consists of a pair of electrodes sealed within a bulb containing neon gas at a low ...

A lustrous, silvery-blue metallic chemical element, Co, with an atomic number of 27 and an atomic weight of 58.93. Metallic cobalt was isolated in 1735 by the Swedish scientist G. Brandt, who called ...

Antifriction bearing

Science; General science

A machine element that permits free motion between moving and fixed parts. Antifrictional bearings are essential to mechanised equipment; they hold or guide moving machine parts and minimise ...

Spring (machines)

Science; General science

A machine element for storing energy as a function of displacement. The flywheel, in contrast, is a means for storing energy as a function of angular velocity. Force applied to a spring member causes ...

Steam engine

Science; General science

A machine for converting the heat energy in steam to mechanical energy of a moving mechanism, for example, a shaft. The steam engine dominated the industrial revolution and made available a ...

Steam turbine

Science; General science

A machine for generating mechanical power in rotary motion from the energy of steam at temperature and pressure above that of an available sink. By far the most widely used and most powerful turbines ...

Alternating-current generator

Science; General science

A machine that converts mechanical power into alternating-current electric power. Almost all electric power is produced by alternating-current (ac) generators that are driven by rotating prime ...