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Emissivity in the Infrared

Emissivity in the Infrared

Effects of Emissivity Thermal imaging cameras detect and measure the sum of infrared energy over a range of wavelengths determined by the sensitivity of the camera’s detector. Thermal imagers cannot discriminate energy at 7µm from energy at 14µm the way the human eye...
Emissivity Coefficients of some common Materials

Emissivity Coefficients of some common Materials

The radiation heat transfer emissivity coefficient of some common materials as aluminum, brass, glass and many more The emissivity coefficient – ε – indicates the radiation of heat from a ‘grey body’ according the Stefan-Boltzmann Law, compared...
Reflected Temperature Correction

Reflected Temperature Correction

Today’s topic: when we enter the emissivity correction value into the thermal imager, we are, in essence, telling it what percentage of the total energy it sees is being emitted by the surface. If that surface, like most we look at, is also opaque (meaning we can’t...