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

Schottky barrier diode

Science; General science

A metal-semiconductor diode (two terminal electrical device) that exhibits a very nonlinear relation between voltage across it and current through it; formally known as a metallic disc rectifier. ...

Lawsonite

Science; General science

A metamorphic silicate mineral related chemically and structurally to the epidote group of minerals. Its composition is Ca(H 2 O)Al 2 (OH) 2 (Si 2 O 7 ), and it is a sorosilicate based on the ...

A metalworking process used to fabricate parts of simple or complex shape from a wide variety of metals and alloys in the form of powders. The process involves shaping of the powder and subsequent ...

Aluminium

Science; General science

A metallic chemical element, symbol Al, atomic number 13, atomic weight 26.98154, in group 13 of the periodic system. Pure aluminium is soft and lacks strength, but it can be alloyed with other ...

Hornfels

Science; General science

A metamorphic rock that has been subjected to heating during contact metamorphism around intrusive igneous rocks. Hornfels is typically fine-grained, although where it is subjected to high ...

Quartzite

Science; General science

A metamorphic rock consisting largely or entirely of quartz. Most quartzites are formed by metamorphism of sandstone; but some have developed by metasomatic introduction of quartz, SiO 2 , often ...

Dysprosium

Science; General science

A metallic rare-earth element, Dy, atomic number 66 and atomic weight 162.50. The naturally occurring element is composed of seven stable isotopes. Dysprosium forms a white oxide, Dy 2 O 3 , which ...