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A rectal temperature is 0.3°C (0.5°F) to 0.6°C (1°F) higher than an oral temperature. An ear (tympanic) temperature is 0.3°C (0.5°F) to 0.6°C (1°F) higher than an oral temperature. An armpit (axillary) temperature is usually 0.3°C (0.5°F) to 0.6°C (1°F) lower than an oral temperature. How do you know ifRead More →

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1800s. 1866 — Thomas Clifford Allbutt invented a clinical thermometer that produced a body temperature reading in five minutes as opposed to twenty. When did doctors start using thermometers? The first real medical thermometer was invented by Sir Thomas Allbut in 1867. It was six inches long and took aboutRead More →