What is the degree of heat and cold of an object?

The degree of heat and cold of an object is expressed by temperature.

introduction of temperature:

mbth is a physical quantity that indicates the degree of heat and cold of an object, and it is the intensity of thermal motion of an object molecule in a microscopic view. Temperature can only be measured indirectly through some characteristics of an object changing with temperature, and the scale used to measure the temperature value of an object is called a temperature scale. It specifies the starting point of temperature reading and the basic unit of measuring temperature.

centigrade scale:

Its inventor is Anders Celsius(171-1744), whose freezing point is ℃ and boiling point is 1℃. In 174, the Swede Celsius proposed that the temperature of ice-water mixture should be degrees and the boiling temperature of water should be 1 degrees under standard atmospheric pressure.

the glass mercury thermometer is graded according to the two fixed temperature points of water. Two points are divided into 1 equal parts, and each part is called 1 degree Celsius. Write it as 1℃.

Measurement of temperature and ground temperature:

Temperature:

Temperature is a meteorological term, which generally refers to the temperature of the atmosphere. The temperature in weather forecast refers to the air temperature measured in the open air without direct sunlight. The international standard unit of temperature measurement is Celsius (℃). The highest temperature is the highest temperature in a day, which generally appears at 14-15, and the lowest temperature generally appears at 5-6 in the morning.

centigrade scale is used in China, and centigrade is expressed in℃. Generally, it is observed four times a day, and some stations observe three times a day according to the actual situation. Temperature is an important index to measure the distribution and changing trend of atmospheric temperature on the earth's surface.

Measurement of ground temperature:

The main instrument used by meteorological stations to measure the air temperature near the ground is a glass tube thermometer filled with mercury or alcohol. Because the thermometer itself absorbs solar heat more than air.

Under direct sunlight exposure, the indicated reading is often higher than the actual temperature of the air around it, so when measuring the air temperature near the ground, the thermometer is usually placed in a louver box with ventilation on all sides about 1.5m from the ground. The ground temperature mentioned by the meteorological department refers to the temperature in the louver about 1.5m above the ground.