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

Shock wave

Science; General science

A mechanical wave of large amplitude, propagating at supersonic velocity, across which pressure or stress, density, particle velocity, temperature, and related properties change in a nearly ...

A mechanism that produces a straight-line (or nearly so) output motion from an input element that rotates, oscillates, or moves in a straight line. Common machine elements, such as linkages, gears, ...

Medical imaging

Science; General science

A medical specialty that uses x-rays, gamma rays, high-frequency sound waves, and magnetic fields to produce images of organs and other internal structures of the body. In diagnostic radiology the ...

Phagocytosis

Science; General science

A mechanism by which single cells of the animal kingdom, such as smaller protozoa, engulf and carry particles into the cytoplasm. It differs from endocytosis primarily in the size of the particle ...

Differential

Science; General science

A mechanism which permits a rear axle to turn corners with one wheel rolling faster than the other. An automobile differential is located in the case carrying the rear-axle drive gear (see illus. ...

Cashew

Science; General science

A medium-sized (20–30 ft or 6–9 m high), spreading evergreen tree ( Anacardium occidentale ) native to Brazil, but now grown widely in the tropics for its edible nuts and the resinous oil contained ...

Eocrinoidea

Science; General science

A medium-sized class of primitive, brachiole-bearing, blastozoan echinoderms of the class Crinozoa that ranged from the Early Cambrian to the Middle Silurian, although few eocrinoids survived past ...