Final answer:
The best type of temperature measuring device for use in a refrigerator is an alcohol thermometer. Alcohol thermometers work by using a reservoir of liquid alcohol that expands when heated and contracts when cooled, causing the liquid column to lengthen or shorten as the temperature changes.
Step-by-step explanation:
The best type of temperature measuring device for use in a refrigerator is an alcohol thermometer. Alcohol thermometers work by using a reservoir of liquid alcohol that expands when heated and contracts when cooled, causing the liquid column to lengthen or shorten as the temperature changes.
Alcohol thermometers are commonly used in refrigerators because they are accurate, easy to read, and can measure temperatures within the appropriate range.
Other types of thermometers, such as liquid crystal thermometers and infrared radiation (pyrometer) thermometers, are also used for temperature measurement, but they may not be as suitable for use in a refrigerator.