Why can the temperature be measured in the ear
Every object emits infrared energy that corresponds to its temperature.
Therefore, the temperature of an object can be obtained by measuring the
amount of the infrared energy. The ear thermometer employs this theory
and detects the radiated heat out of the eardrum using an infrared sensor.
The ear drum is hardly affected by the room temperature because it is
recessed inside the head. Thus, a stable and quick temperature detection
can be performed.
Ear thermometer and axillary thermometer
The body temperature varies depending on the individual, and measuring
conditions. Furthermore, it varies with where the temperature is measured.
For example, the temperatures, measured using an ear thermometer and
using an axillary thermometer, can differ by
1 . So, measure your
temperature using both methods and know your normal temperatures
under the armpit and in the ear.
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