because it's a place on your body that is really warm. same as with an armpit, or even in the rectum, the inside of your body is what you need to measure
Put a thermometer under your tongue and close your mouth tightly.
It means you put the the thermometer under the tonge so it can take you tempoture or if you don't like putting it under your tongue put it up your butt like they do with babies
To measure body temperature accurately, place the thermometer under the tongue, in the armpit, or rectally. Follow the manufacturer's instructions for the specific thermometer you are using.
Putting a penny under your tongue while taking your temperature with a thermometer can alter the temperature reading. The metal of the penny may interfere with the accuracy of the thermometer, leading to an incorrect reading. It is always best to follow the manufacturer's instructions for proper use of the thermometer.
that's the thing you put under your tongue to see what your temp is.........stupid people
It's called a rectal thermometer. It gives a slightly more accurate reading than when put under your tongue or in your armpit.
under the tongue
You should keep a mercury thermometer under your tongue for 3-4 minutes to ensure an accurate reading.
Measuring body temperature by keeping thermometer under the tongue is a convenient standardfor measuring one's body temperature. Other places used for keeping the thermometer includethe armpit and the rectum.
You should place the thermometer under your tongue for an accurate oral temperature reading.
To measure temperature of the body.
The thermometer is broken.Put the thermometer under your tongue.