As long as your meat thermometer is calibrated correctly, it should only take about 2-5 seconds to get a reading.
Generally, you must leave a thermometer in your mouth approximately three minutes to get an accurate reading.
In order to make an accurate measurement with a thermometer, you need to wait until its reading stops changing.
You can cook it really easily and fast so then you don't have to wait that long to eat food. But at the same time too much of instant foods aren't good for the human body.
There is no official measurement for how long an actual instant is (see the related links). Most people use the word instant to mean "very fast" or "immediately." However, it is believed by some mathematicians that an instant is equal to 1/1000000000000000000 sec.
When the temperature changes, how long it takes for the thermometer to catch up and show the correct value.
A thermometer needs to stabilize for at least 5 minutes. This is so that it can be cleaned thoroughly.
It would depend on a contingency of variables. Being, how hot is the substance that it is being removed from, the temperature of the room, how long it takes from the time removed from the liquid until it is read, and the type of thermometer reading device.
If your temperature is taken orally, the temperature of your drink can change the reading on the thermometer. If your temperature is taken rectally or in the axilla, then it wouldn't matter how long it as been since you drank something.
Heat the end of a horizontal 12 inch long by half an inch diameter iron rod. Fix a thermometer at the other end. Take a temperature reading every 5 seconds.
Not that long, it's almost instant.
On a Fahrenheit thermometer the long marks represent a full degree. There are four shorter lines between the long marks that indicate two degree increments.
30 - 40 minutes at 350 degrees should be good. But just to be sure you should use a meat thermometer to make sure the temperature of the pork reaches 165 degrees for safety's sake.