General science

General science

A variety of science subjects concerning the fundamental knowledge about different aspects of our world and their underlying principles.

Industry: Science

Add a new term

Contributors in General science

Become a Contributors

General science

Enzymes are proteins found in all living cells. They catalyse biochemical processes but are not consumed in the process. As proteins, they are biodegradable and operate at specific pH values and at ...

Beryllium alloys

Science; General science

Dilute alloys of base metals which contain a few percent of beryllium in a precipitation-hardening system. They are the principal useful beryllium alloys manufactured today. Although beryllium has ...

Positive train control

Science; General science

From the time of the steam engine in the 1830s, innovation has been a hallmark of the U.S. rail industry. However, the train control technology used on U.S. railroads has remained virtually unchanged ...

Poly(ethylene glycol)

Science; General science

Any of a series of water-soluble polymers with the general formula HO(CH 2 CH 2 O) n H. These colorless, odourless compounds range in appearance from viscous liquids for n = 2 to 13 (freezing ...

Foetal membrane

Science; General science

Any of four membranous structures surrounding the embryo during its developmental period. Because these membranes are external to the embryo proper, they are called extraembryonic membranes. ...

Masonry

Science; General science

Construction of natural building stone or manufactured units such as brick, concrete block, adobe, glass block, or cast stone that is usually bonded with mortar. Masonry can be used structurally or ...

Paleontological studies of biodiversity

Science; General science

Factors of evolution observed today, such as natural selection, migration, and the origin and extinction of species, have operated throughout the history of life, but the characteristic rates of ...