Thermal Shadow Fading

Thermal Shadow Fading

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Caption: A man's foot was placed flat on a wooden surface for about 30 seconds. After the foot was removed, the surface remained warmer than its surroundings and kept the thermal imprint, or shadow, for some time. The top panel shows the thermal shadow immediately after the foot was removed; the bottom panel shows the same shadow about 30 seconds later. Thermography is a technique for visualizing the temperature of objects by recording the thermal emission at infrared wavelengths. This image was acquired with a specialized camera that uses a focal-plane array of vanadium oxide microbolometers as a sensor. It is sensitive to electromagnetic radiation in the wavelength range of 8 to 14 micron. The camera produces a 320x240-pixel image where different colours

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Keywords: after, before, before & after, before after, before and after, compare, comparison, digital infrared thermal imaging, electromagnetic radiation, fade, fading, foot, foot print, footprint, heat, heat radiation, imaging, imprint, infrared, ir, print, radiation, science, technology, temperature, thermal, thermal radiation, thermal shadow, thermogram, thermograph, thermography, time, time lapse, trace

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