linear expansion
[ˈlɪniər ɪkˈspænʃən]
nounpl: linear expansions
expansão linear
1. The increase in length of a material or object when exposed to heat, expressed as a function of temperature change
The linear expansion of the metal rod was measured at different temperatures.
A expansão linear da barra de metal foi medida em diferentes temperaturas.
2. In mathematics and physics, the expansion or growth of a quantity in one dimension that is proportional to a single variable
The linear expansion model predicts how the bridge will lengthen during summer heat.
O modelo de expansão linear prevê como a ponte se alongará durante o calor do verão.
3. The coefficient of linear expansion describes how much a material changes in length per unit length per degree of temperature change
Materials with high coefficients of linear expansion require expansion joints in construction.
Materiais com altos coeficientes de expansão linear exigem juntas de dilatação na construção.
Linear expansion is a fundamental concept taught in physics and engineering courses across Brazil and Portugal. It has practical applications in Brazilian construction and infrastructure projects, particularly in designing bridges and buildings that must accommodate temperature variations in tropical climates. The term is standardized across both Brazilian Portuguese and European Portuguese technical literature.
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