Thermometer Link

Digital thermometers use an electronic device known as a thermistor. A thermistor’s electrical resistance changes based on temperature, and this change is measured to compute a precise numerical value.

Over the next century, researchers refined this concept, shifting to liquids like wine, and eventually, alcohol and mercury. In 1714, Daniel Gabriel Fahrenheit developed the first true mercury-in-glass thermometer, providing a consistent, predictable tool with a standardized scale. The Celsius scale, or centigrade, was developed shortly after, basing measurements on the freezing ( ) and boiling points ( ) of water. How Thermometers Work thermometer

in more detail.

Crucial for verifying that food has reached a safe, high enough temperature to kill bacteria, ensuring food safety. Digital thermometers use an electronic device known as

All thermometers operate based on specific physical changes that occur when heat increases or decreases: In 1714, Daniel Gabriel Fahrenheit developed the first

These are commonly used for medical purposes (oral, rectal, or axillary) and offer rapid, accurate readings via a metal probe and digital display.