JOHN COLE / SCIENCE PHOTO LIBRARY JOHN COLE / SCIENCE PHOTO LIBRARY
Taking temperature. Hospital nurse using an ear thermometer to take the temperature of a patient. Ear thermometers work by detecting infrared radiation (heat) generated by the eardrum (tymphanic membrane) and surrounding tissues. This gives an indication of body temperature, which is an important measure of health. Photographed at the Royal London Hospital, London, England.
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