LEA PATERSON / SCIENCE PHOTO LIBRARY LEA PATERSON / SCIENCE PHOTO LIBRARY
Digital thermometer. Man holding a digital thermometer while feeling the temperature of his forehead with his hand. The thermometer is used to obtain an accurate reading of body temperature. The tip of the probe is placed under the tongue. When a beep sounds the temperature is displayed on the liquid crystal display. Normal human body temperature is 36.9 degrees Celsius (98.5 degrees Farenheit).
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