A wet tissue placed inside a test tube was locally heated using infrared radiation from a halogen point heater, and its behavior from drying to carbonization was observed.
In the initial stage of irradiation, moisture inside the tissue rapidly evaporates, and drying progresses accompanied by the generation of water vapor.
After moisture removal is completed, the temperature of the dried area rises sharply, resulting in partial carbonization.
This video demonstrates the characteristics of localized infrared heating, which enables non-contact heating of only the internal sample through a glass container, as well as changes in behavior depending on heating conditions.
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