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

Crown gall

Science; General science

A neoplastic disease of primarily woody plants, although the disease can be reproduced in species representing more than 90 plant families. The disease results from infection of wounds by the ...

A navigation instrument used for measuring angles, primarily altitudes of celestial bodies. Originally, the sextant had an arc of 60°, or one-sixth of a circle, from which the instrument derived its ...

Twinkling stars

Science; General science

A phenomenon by which light from the stars, as it passes through fluctuations in the Earth's atmosphere, is rapidly modulated and redirected to make the starlight appear to flicker. Although it is ...

Neoteny

Science; General science

A phenomenon among some salamanders, in which larvae of large size, while still retaining the gills and other larval features, become sexually mature, mate, and produce fertile eggs. In certain ...

Fumigant

Science; General science

A pesticidal chemical or chemical formulation that functions in a gaseous state. Chemical formulations are designed to increase toxicity, reduce flammability, give off warning odors, and provide for ...

Caisson foundation

Science; General science

A permanent substructure that, while being sunk into position, permits excavation to proceed inside and also provides protection for the workers against water pressure and collapse of soil. The term ...

Condensation

Science; General science

A phase-change process in which vapour converts into liquid when the temperature of the vapour is reduced below the saturation temperature corresponding to the pressure in the vapor. For a pure ...