Oral thermometer

Rectal thermometer usage is usually limited to taking a baby's temperature, but this method also may be used on aging adults who are ill. Doctors say that taking rectal temperature is the most accurate, especially for children under the age of four or anyone else who cannot cooperate in the taking of an oral temperature. Care must be practiced when taking someone's temperature rectally. The rectal wall may be pierced or other pain may be caused by incorrect usage methods. Here are some suggestions about how to safely and effectively use a rectal thermometer to take someone's temperature.

There are several principles on which empirical thermometers are built, as listed in the section of this article entitled "Primary and secondary thermometers". Several such principles are essentially based on the constitutive relation between the state of a suitably selected particular material and its temperature. Only some materials are suitable for this purpose, and they may be considered as "thermometric materials". Radiometric thermometry, in contrast, can be only slightly dependent on the constitutive relations of materials. In a sense then, radiometric thermometry might be thought of as "universal". This is because it rests mainly on a universality character of thermodynamic equilibrium, that it has the universal property of producing blackbody radiation.

The stem of the thermometer is not perfectly round. Its flattened areas act as a magnifying glass to make the hollow shaft in the stem appear larger. (The flattened areas also keep the thermometer from rolling off a flat surface.) Using your fingertips, slowly rotate the thermometer back and forth until the mercury in the shaft is clearly visible (see figure 2-1 B). The column of mercury will appear to be silver in color and the rest (empty part) of the shaft will appear whitish. The column of mercury should be visible just above the numbers.

You may need to check an oral temperature to learn if you or a family member has a fever. "Fever" is a word used for a temperature that is higher than normal for the body. Fever is usually a sign of illness, infection, or other conditions. The normal oral temperature for adults is about ° F (37° C). The normal oral temperature for a child is between ° and ° F (° and ° C). The normal oral temperature for older persons is ° F (36° C). Body temperature changes slightly through the day and night, and may change based on your activity.

Oral thermometer

oral thermometer

You may need to check an oral temperature to learn if you or a family member has a fever. "Fever" is a word used for a temperature that is higher than normal for the body. Fever is usually a sign of illness, infection, or other conditions. The normal oral temperature for adults is about ° F (37° C). The normal oral temperature for a child is between ° and ° F (° and ° C). The normal oral temperature for older persons is ° F (36° C). Body temperature changes slightly through the day and night, and may change based on your activity.

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