Quarter period

The point, dot, or character (.) used to mark the end of a declarative sentence, or to indicate an abbreviation; also called "full point" or "full stop". Also, a well-balanced or ...

period

Weather; Meteorology

Any function of time ''f''(''t'') is periodic with period ''t'' if ''f''(''t'') = ''f''(''t'' + τ) for all times ''t'', where τ is the smallest number for which this equality ...

period

Art history; Visual arts

An extended interval of time, understood usually within the context of an identifiable geographic region, characterized by a specific set of cultural, economic, social or ...

period

Anthropology; Cultural anthropology

A unit of geological time; a division of an era.

trine

Astrology; General astrology

An aspect of 120◦, usually occurs between planets in the signs of one element (Fire, Air, Earth, Water). It is considered to be harmonious, its key words are smooth and easy. A ...

square

Astrology; General astrology

An aspect of 90◦, usually occurs between planets in signs of one quadruplicity (cardinal, fixed, mutable). Considered to be a tense aspect that calls for action. Also associated ...

sextile

Astrology; General astrology

An aspect of 60◦ between planets. It normally occurs between planets placed either in two feminine (Earth and Water) or two masculine (Fire and Air) signs. It is considered to be ...

opposition

Astrology; General astrology

An aspect of 180◦, normally occurs between planets of two opposite signs (e.g. Aries and Libra). It is considered a tense aspect that calls for choice between two opposed ...

winter solstice

Astrology; General astrology

Winter solstice occurs on December, 21. Astrologically it is the time when the Sun is in the first degree of Capricorn.

summer solstice

Astrology; General astrology

Summer solstice occurs on June 21 each year. Astrologically it is the time when the Sun reaches the first degree of Cancer.

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Industry/Domain: Mining Category: General mining

Asteroid mining

The future industry of sending spacecraft to asteroids in order to harvest their natural resources and bring them back to civilization for use. On ...