solid angle

[ˈsɒlɪd ˈæŋɡəl]
nounpl: solid angles
ângulo sólido
1. A three-dimensional angle formed by three or more planes meeting at a common point, or the measure of how much an object subtends at a point in three-dimensional space, measured in steradians
The solid angle subtended by the moon as seen from Earth is approximately 0.0005 steradians.
O ângulo sólido subtendido pela lua, conforme visto da Terra, é aproximadamente 0,0005 esterradianos.
2. In geometry and physics, the portion of space visible from a point, or the angular measure of a cone or pyramidal shape emanating from that point
The detector measures the solid angle covered by the radiation source.
O detector mede o ângulo sólido coberto pela fonte de radiação.
This is a technical term used primarily in mathematics, physics, astronomy, and engineering education in both Brazil and the United States. It has no colloquial usage and is standardized across academic institutions in both Portuguese and English-speaking countries.
Synonyms / Sinônimos
spatial anglethree-dimensional anglesteradian (unit)

Regional Variations

General Brazilian
ângulo sólido
Standard usage in mathematics and physics education
Portugal
ângulo sólido
Same as Brazilian Portuguese, standard academic term
Technical/Academic
ângulo espacial
Alternative technical term, less common

Related Words

steradianplane angleconespherical geometrysolid geometryradian
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