* Transparency: Glass is transparent, allowing you to easily see the liquid inside the thermometer (usually mercury or alcohol). This makes it easy to read the temperature by observing the liquid level.
* Thermal Expansion: Glass has a relatively low coefficient of thermal expansion. This means it expands and contracts very little with changes in temperature. This is crucial because the thermometer's stem must remain stable in size to ensure accurate readings.
* Inertness: Glass is chemically inert, meaning it doesn't react with the liquid inside the thermometer. This prevents contamination of the liquid and ensures accurate temperature readings.
* Ease of Manufacturing: Glass is relatively easy to mold and shape, making it suitable for creating the precise shape and size needed for a thermometer stem.
* Durability: Glass is durable and can withstand moderate temperature changes without breaking.
While glass thermometers are still used, they are gradually being replaced by digital thermometers, which offer greater accuracy, faster readings, and are safer to use.
