angular size

[ˈæŋɡjələr saɪz]
nounpl: angular sizes
tamanho angular
1. The apparent size of an object as seen from a particular point, measured as the angle subtended by the object at the observer's eye or instrument
The angular size of the Moon in the sky is approximately 0.5 degrees.
O tamanho angular da Lua no céu é aproximadamente 0,5 graus.
2. In astronomy, the angle in the sky occupied by a celestial object or the angle between two celestial objects as viewed from Earth
The angular size of the sun and moon are nearly equal, which is why total solar eclipses occur.
O tamanho angular do sol e da lua são quase iguais, razão pela qual ocorrem eclipses solares totais.
This is a technical term primarily used in astronomy, physics, and engineering fields. It is equally understood in both Brazilian Portuguese and European Portuguese scientific communities. The term is essential for understanding celestial observations, telescope specifications, and space exploration discussions.
Synonyms / Sinônimos
apparent sizeangular diametervisual angleangular extent
Antonyms / Antônimos
actual sizephysical sizetrue size

Regional Variations

General Brazilian
tamanho angular
Standard term used in astronomy and physics education
Portugal
tamanho angular
Same standard term used in Portuguese scientific contexts
General Brazilian
dimensão angular
Alternative technical term sometimes used in academic contexts

Related Words

angleangular distancearc minutearc secondfield of viewapparent magnitudesolid angle
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