Final answer:
Oral electronic thermometers are placed under the tongue in the sublingual pocket because it is highly vascular, providing a good indication of the body's core temperature. Infrared ear thermometers use technology that gives a more accurate reading without contact, reducing infection risks.
Step-by-step explanation:
When measuring body temperature using an oral electronic thermometer, it is placed under the tongue in the sublingual pocket because this area provides reliable access to blood vessels that help reflect the body’s core temperature. The sublingual area is highly vascular, meaning it has many blood vessels, making it an excellent site for measuring temperature as the blood flow can transfer heat to the thermometer sensor efficiently. This is in contrast to infrared ear thermometers developed by Diatek Corporation and NASA, which are more accurate than traditional alcohol or digital thermometers placed under the tongue or armpit. Instead, these thermometers measure the energy emitted by the eardrum using infrared technology, providing a quick and contactless method that reduces cross infection risk. However, for convenience and ease of access, the sublingual pocket remains a common site for temperature measurement in non-critical situations.