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rupa

The absence of a valence electron in a semiconductor crystal. The movement of a hole is equivalent to the movement of a positive charge.

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crna rupa
Astronomy; Galaxy

A black hole is the circular dark space that sits at the center of a galaxy which absorbs everything including light so nothing can be reflected or escaped from it. Around a black ...

prerijska rupa
Biology; Ecology

Wetland marshes or depressions left by glaciers. Prairie postholes scattered across the Upper Midwest of North America host 50% of the continent's migrating waterfowl.

crna rupa
Physics; General physics

Preostala jezgra supernove koja je toliko gusta da čak i svjetlost ne može proći

ozonska rupa
Biology; Ecology

Nekad prirodno proljetno stanjenje ozona u stratosferi iznad Antarktike, danas djelovanjem CFC i drugih zagađivača povećano u rupu veličine mjeseca.

ozonska rupa
Agricultural chemicals; Pesticides

Stanjenje i kidanje atmosferskog sloja ozona. Oznaka kojom se količina ovog iscrpljivanja zaliha naziva "ozonskom rupom" stavlja se kad primijećena količina uništavanja prijeđe ...

difuzno područje
Semiconductors; Semiconductor quality

A portion of the die where impurities have been diffused into the surface of the silicon at high temperature to change its electrical characteristics through the creation of a ...

primalac
Semiconductors; Semiconductor quality

An impurity that can make a semiconductor P-type by accepting valence electrons, thereby leaving "holes" in the valence band of the semiconductor device. The holes act like ...

legiranje
Semiconductors; Semiconductor quality

The step in the fabrication process immediately following evaporation. This process alloys the conductive metal which had been deposited on the die surface to that surface, thus ...

alfa čestica
Semiconductors; Semiconductor quality

Helium nuclei emitted as a result of the radioactive decay of trace amounts of naturally occurring uranium and thorium found in semiconductor packaging materials. Alpha particles, ...

analogni uređaj
Semiconductors; Semiconductor quality

A microcircuit in which the output is a mathematical function of the input.

rasprašenje
Semiconductors; Semiconductor quality

A method of producing thin films by freeing molecules from a solid source through ionic bombardment in order to deposit them on a nearby surface.

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