emissivity

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Related to emissive: emissive power, Emissive layer

e·mis·siv·i·ty

(ē'mi-siv'i-tē),
The giving off of heat rays; a perfect "black body" has an emissivity of 1, a highly polished metallic surface may have an emissivity as low as 0.02.

emissivity

(ĕm″ĭ-sĭv′ĭ-tē)
The ability of a substance or surface to emit radiant energy.
References in periodicals archive ?
The emissive power might still not be equal to the Kirchhoff function in this case, depending on the amount of photons that are available from reflection.
Meanwhile, emissive efficiency (lm/W) of the phosphorescent type can theoretically become four times that of the fluorescent type.
Blue light, compared to green and red, comes from a higher energy emissive state that naturally places greater demands on the materials in the device.
But that doesn't mean that backlit and emissive technologies are completely out of the running.
pLEDs are one class of organic light-emitting diodes, a display technology platform for producing bright, high-contrast, low-voltage emissive displays.
We stopped using CFCs in our foam production plants in 1989; we will stop producing and selling methyl chloroform for emissive uses by December 1995; and we have developed a new blowing agent process for our customers who produce polystyrene foam products.
2, backlit emissive keyboard, 2nd battery for the keyboard.
Available in both OEM and standalone configurations, the compact low-cost spectrometer is ideal for simple absorbance, fluorescence and emissive color measurements.
The company said it will raise the prices of methyl bromide for emissive use by up to 20% in all regions outside of North America, up to 40% for methyl bromide for regulated critical uses within North America and up to 60% for quarantine and pre shipment use.
A company spokesperson informed at the recent released as such, "The new Model ST-8828 series is designed to gauge accurate temperature measurement using infrared, which is otherwise difficult with surfaces that have low emissive quotient.
The emissive devices are operated by commands and data supplied via the SPI communications protocol.