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An acetylene torch is positioned to heat a sample in the legacy emissometer in the calibration laboratory of the Arnold Engineering Development Complex Aerothermal Measurements Laboratory at Arnold Air Force Base, Tenn. The sample was being heated before measuring it’s 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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