| 41. | In this case, Kirchhoff's law of equality of radiative absorptivity and emissivity holds.
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| 42. | Heat loss is further reduced by the low-emissivity of the glass that is used.
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| 43. | The applied current was particularly effective in reducing surface oxides that increased the emissivity of the filaments.
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| 44. | Absorptivity, reflectivity, and emissivity of all bodies are dependent on the wavelength of the radiation.
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| 45. | Windows incorporating low emissivity glass, together with insulated spacer bars and extra deep window frames.
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| 46. | A black body has an emissivity of 1 and a perfect reflector has an emissivity of 0.
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| 47. | A black body has an emissivity of 1 and a perfect reflector has an emissivity of 0.
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| 48. | During the night, the atmosphere cools somewhat, but not greatly, because its emissivity is low.
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| 49. | For that reason, incorrect selection of emissivity will give inaccurate results when using infrared cameras and pyrometers.
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| 50. | This solution assumes that the emissivity is the same at both wavelengths and cancels out in the division.
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