T-SERVICE / SCIENCE PHOTO LIBRARY T-SERVICE / SCIENCE PHOTO LIBRARY
Lion. Thermogram of a male lion (Panthera leo). A thermogram shows variation in temperature on the surface of an object, measured by the long-wave infrared radiation it emits. The temperature scale is colour-coded and runs from dark blue (0 degrees Celsius, coldest) through green and yellow to red (warmest, 24.1 degrees Celsius).
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