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

A low-pass amplifier having a bandwidth in the range from 2 to 100 MHz. Typical applications are in television receivers, cathode-ray-tube computer terminals, and pulse amplifiers. The function of ...

Pineapple

Science; General science

A low-growing perennial plant, indigenous to the Americas. The cultivated varieties (cultivars) belong to the species Ananas sativus of the plant order Bromeliales.

Cathodoluminescence

Science; General science

A luminescence resulting from the bombardment of a substance with an electron (cathode-ray) beam. The principal applications of cathodoluminescence are in television, computer, radar, and ...

Engine

Science; General science

A machine designed for the conversion of energy into useful mechanical motion. The principal characteristic of an engine is its capacity to deliver appreciable mechanical power, as contrasted to a ...

Gear

Science; General science

A machine element used to transmit motion between rotating shafts when the centre distance of the shafts is not too large. Toothed gears provide a positive drive, maintaining exact velocity ratios ...

Photoluminescence

Science; General science

A luminescence excited in a body by some form of electromagnetic radiation incident on the body. The term photoluminescence is generally limited to cases in which the incident radiation is in the ...

Brake

Science; General science

A machine element for applying a force to a moving surface to slow it down or bring it to rest in a controlled manner. In doing so, it converts the kinetic energy of motion into heat which is ...