La Crosse Technology InfraScan IR-101 Instruction Manual page 9

temperature. A value of less than 1 means that the radiation emitted from
the object is not only determined by its own temperature but also by
reflections from neighboring bodies or due to the transmission, i.e. the
diathermancy, of the object. The emission factor thus has an effect on the
result of the measurement. The Infrared Thermometer works with an
emission factor of 0.95, i.e. the measuring unit assumes that the object
being monitored has a factor of 0.95. If this is not the case, there will be
inaccuracies in the measurement (see Section 2.6 "Measurement
Inaccuracies").
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