Which thermometer is specifically used for measuring grass minimum temperature?

An alcohol thermometer is specifically designed for measuring grass minimum temperature because it effectively responds to lower temperatures compared to mercury thermometers. Alcohol has a lower freezing point than mercury, making it sensitive to cooler conditions that are common at the ground level, especially overnight when grass temperatures can drop significantly. This characteristic allows it to provide accurate readings of the minimum temperature that the grass experiences, which is crucial for various agricultural and meteorological studies.

The design of an alcohol thermometer usually includes a bulb that is located close to the ground or grass level, ensuring that the measurements are representative of the actual conditions experienced by the grass. This thermometer often uses colored alcohol to enhance visibility of the scale and the liquid level, providing clear readings.

Overall, for applications related to measuring the minimum temperatures of grass, the alcohol thermometer is the most appropriate and effective choice.