vedeliktermomeeter

Vedeliktermomeeter is a type of thermometer that uses the thermal expansion of a liquid to measure temperature. The most common type utilizes a glass tube with a bulb at one end, filled with a colored liquid, typically alcohol or mercury. As the temperature increases, the liquid inside the bulb expands and rises up the narrow tube. The height of the liquid column corresponds to a specific temperature, indicated by markings along the side of the tube.

The liquid expands because its molecules gain kinetic energy and move further apart with increasing temperature. Conversely, when the temperature decreases, the liquid contracts, and the column descends. The precision of a liquid thermometer depends on the narrowness of the bore of the glass tube and the calibration of the temperature scale. Different liquids are used for different temperature ranges; mercury is suitable for a wide range but can be toxic, while alcohol-based thermometers are safer but have lower temperature limits. These thermometers are widely used in households, laboratories, and medical settings due to their simplicity and affordability.