Question

Який фізичний сенс температури? Якими приладами вона вимірюється ?​

Answer 1

Ответ:

Ентропія є мірою втрати працездатності Системи внаслідок незворотності реальних процесів.

Існують газові, оптичні, інфрачервоні, рідинні,

електричні і механічні термометри. Градусники

Answer 2

The Physical Meaning of Temperature

Temperature is a measure of the average kinetic energy of the particles in a substance. It is a fundamental physical quantity that helps us understand the thermal state of an object or a system. When the temperature of a substance increases, it means that the average kinetic energy of its particles is also increasing. Conversely, when the temperature decreases, the average kinetic energy decreases as well.

Temperature is related to the sensation of hotness or coldness that we experience. When we touch an object that feels hot, it means that its temperature is higher than our body temperature. On the other hand, when we touch an object that feels cold, it means that its temperature is lower than our body temperature.

Measuring Temperature

Temperature can be measured using various instruments called thermometers. These instruments are designed to detect and quantify the thermal energy of a substance. Here are some commonly used thermometers:

1. Mercury Thermometer: This type of thermometer consists of a glass tube filled with mercury. As the temperature changes, the mercury expands or contracts, causing it to rise or fall in the tube. The temperature is read by observing the level of the mercury.

2. Digital Thermometer: Digital thermometers use electronic sensors to measure temperature. They provide a digital readout of the temperature and are often more accurate and faster than mercury thermometers.

3. Infrared Thermometer: Infrared thermometers measure temperature without direct contact with the object being measured. They work by detecting the infrared radiation emitted by the object and converting it into a temperature reading.

4. Thermocouple: A thermocouple is a device that consists of two different metals joined together at one end. When there is a temperature difference between the two junctions, it generates a voltage that is proportional to the temperature difference. This voltage can be measured and used to determine the temperature.

5. Thermistor: A thermistor is a type of temperature sensor that uses the change in electrical resistance with temperature to measure temperature. It is made of a semiconductor material whose resistance varies with temperature.

These are just a few examples of the many types of thermometers available for measuring temperature. The choice of thermometer depends on factors such as the required accuracy, the temperature range to be measured, and the specific application.

Conclusion

In summary, temperature is a measure of the average kinetic energy of particles in a substance. It can be measured using various instruments such as mercury thermometers, digital thermometers, infrared thermometers, thermocouples, and thermistors. These instruments allow us to quantify and monitor temperature changes in different objects and systems.