inversion layer
[/ɪnˈvɜːrʒən ˈleɪər/]
nounpl: inversion layers
camada de inversão térmica
1. A layer of atmosphere where temperature increases with altitude, reversing the normal decrease in temperature, which traps air pollutants and warm air below it
The inversion layer over the city prevented air pollutants from dispersing, leading to poor air quality.
A camada de inversão térmica sobre a cidade impediu que os poluentes do ar se dispersassem, levando a uma má qualidade do ar.
2. In semiconductor physics, a thin region near the surface of a semiconductor where the type of charge carrier changes from majority to minority
The inversion layer at the semiconductor surface is crucial for MOSFET operation.
A camada de inversão na superfície do semicondutor é crucial para o funcionamento do MOSFET.
This term is frequently discussed in Brazilian environmental and meteorological contexts, particularly in major urban areas like São Paulo and Rio de Janeiro where thermal inversions contribute to smog formation. In the USA, it's a critical term in atmospheric sciences and environmental policy discussions, especially in cities with air quality concerns.
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