nounfemininepl: emissivities
emissividade
1. The measure of an object's ability to emit thermal radiation compared to an ideal black body at the same temperature
The emissivity of a surface determines how effectively it radiates heat energy.
A emissividade de uma superfície determina o quão efetivamente ela irradia energia térmica.
2. A dimensionless quantity ranging from 0 to 1 that characterizes thermal radiation emission properties
A polished metal surface typically has a low emissivity value.
Uma superfície de metal polido normalmente tem um valor baixo de emissividade.
3. The ratio of radiant energy emitted by a material to that emitted by a perfect black body at the same temperature and wavelength
Scientists measured the emissivity of the ceramic material at different temperatures.
Cientistas mediram a emissividade do material cerâmico em diferentes temperaturas.
Emissivity is a specialized technical term used primarily in physics, engineering, and industrial applications. It is equally understood in both Brazilian Portuguese and European Portuguese scientific communities. The term is essential in fields such as thermal imaging, HVAC systems, and materials science, where accurate measurements of thermal radiation properties are critical.
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