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2. Infrared thermometer - Wikipedia

   en.wikipedia.org/wiki/Infrared_thermometer

   The distance-to-spot ratio (D:S) is the ratio of the distance to the measurement surface and the diameter of the temperature measurement area. For instance, if the D:S ratio is 12:1, the diameter of the measurement area is one-twelfth of the distance to the object.

3. Thermography - Wikipedia

   en.wikipedia.org/wiki/Thermography

   It would then calculate the object's contact temperature based on the entered emissivity and the infrared radiation as detected by the imager. For a more accurate measurement, a thermographer may apply a standard material of known, high emissivity to the surface of the object.

4. Active thermography - Wikipedia

   en.wikipedia.org/wiki/Active_thermography

   Active thermography is an advanced nondestructive testing procedure, which uses a thermographic measurement of a tested material thermal response after its external excitation. This principle can be used also for non-contact [1] infrared non-destructive testing (IRNDT) of materials. [2]

5. Thermal remote sensing - Wikipedia

   en.wikipedia.org/wiki/Thermal_Remote_sensing

   One of the most important applications of thermal remote sensing in earth sciences is to calculate the Land Surface Temperature (LST). LST is a measurement of how hot the land is to the touch. It differs from air temperature (the temperature given in weather reports) because land heats and cools more quickly than air. [15]

6. Non-contact thermography - Wikipedia

   en.wikipedia.org/wiki/Non-contact_thermography

   Non-contact thermography, thermographic imaging, or medical thermology is the field of thermography that uses infrared images of the human skin to assist in the diagnosis and treatment of medical conditions. Medical thermology is sometimes referred to as medical infrared imaging or tele-thermology and utilizes thermographic cameras. According ...

7. Infrared and thermal testing - Wikipedia

   en.wikipedia.org/wiki/Infrared_and_thermal_testing

   Inset shows false color infrared thermograph of a roof on a sunny day; the white surfaces (colored blue in the thermograph) have been coated with an elastomer to reduce solar loading and have a surface temperature of approximately 60 °F (16 °C); the gray surfaces (colored red/white in the thermogram) are a standard asphalt (bitumen) coating and have a surface temperature of approximately 160 ...