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Annette Painter, AEDC Fellow and instrument technician specialist, operates the legacy emissometer in the calibration laboratory of the Arnold Engineering Development Complex Aerothermal Measurements Laboratory at Arnold Air Force Base, Tenn. An acetylene torch is positioned to heat a sample before measuring the emissivity when bombarded by a blackbody simulator. The enhanced emissometer being developed for the ATML will include a built-in heat source and allow for measurements at additional angles. (U.S. Air Force photo)
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