DR. ARTHUR TUCKER / SCIENCE PHOTO LIBRARY DR. ARTHUR TUCKER / SCIENCE PHOTO LIBRARY
Thermogram of a baby walking. Thermograms record the heat that is given off by an object as infrared radiation. The colours represent different temperatures, from the cold finger tips (21 degrees Celsius, purple) to the hotter forehead (34 degrees Celsius, yellow). Thermography can be used as a diagnostic technique to detect circulatory dysfunctions and tumours.
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