What is an absolute temperature scale? What is a temperature scale The meaning of a temperature scal

Absolute zero. The lowest temperature that can be reached theoretically, the zero degree that is set as the thermodynamic temperature scale (absolute temperature scale), is called absolute zero. Absolute temperature zero (0k) is equivalent to minus zero degrees Celsius (known as "absolute zero", the lowest possible temperature in nature).

At absolute zero, the motion of the atoms stops completely, which means that we can accurately measure the velocity of the particles (0). However in 1890 the German physicist Max Planck.

Planck's constant is introduced.

It shows the fact that the product of the uncertainty of the velocity of the particle, the uncertainty of the position, and the mass must not be less than Planck's constant, which is a fundamental law of physics in the universe in which we live. (Heisenberg is not sure of the relationship.)

Then when the particle is below absolute zero and the speed of motion is zero, it contradicts this law, so we can theoretically conclude that absolute zero is unattainable. There is no maximum temperature!

The absolute temperature scale is an ideal and scientific temperature scale based on the Carnot cycle, and the freezing point of water (0) is taken as k (k is called Kelvin, the unit of the absolute temperature scale), and the graduation of the absolute temperature scale is the same as that of the Celsius temperature scale. Absolute zero, the lowest temperature that can theoretically be reached, at which the object has no internal energy. The zero degree that is defined as the thermodynamic temperature scale (absolute temperature scale) is called absolute zero.

Absolute zero represents a temperature at which all the molecules and atoms that make up matter cease to move. Motion refers to all spatial, mechanical, molecular, and vibrational motions, including some forms of electronic motion, but it does not include "zero-point motion" in the concept of quantum mechanics. This motion cannot be stopped unless the agglomeration system of the moving particles is dismantled.

Due to the nature of this definition, absolute zero is impossible to achieve in any experiment, but scientists have already reached low temperatures of only one millionth of a degree Celsius from absolute zero in the laboratory. There is no maximum temperature, when the speed of an object is close to the speed of light, its mass is close to infinity, so its energy is also close to infinity, and the corresponding temperature is of course close to infinity.

The international temperature scale is a protocol temperature scale.

Temperature scale: the "ruler" of temperature - according to the temperature scale is to measure a certain standard division of the temperature mark, just like the length of the object to measure the length of the ruler - "long scale", is a kind of artificial regulation, or called a unit system.

The thermodynamic temperature scale is a temperature scale that does not depend on any specific temperature measuring substance and its temperature measurement characteristics, and is certainly the most ideal temperature scale. But we can't make a reversible heat engine, so we can't measure the ratio of heat from a high-temperature heat source to a low-temperature heat source. However, when the Kelvin scale proves theoretically that the temperature measured by the thermodynamic scale is the same as the temperature measured by the ideal gas scale, the thermodynamic scale can be achieved with the ideal gas scale.

International temperature scale, ITS-90 (International

temperature

SCALEOF1990, which is different from the international practical temperature scale IPTS-68 (International

practical

temperature

scaleof1968 is an international protocol temperature scale, which is close to the thermodynamic temperature scale, and has high reproducibility accuracy and easy to use. The 1990 International Temperature Scale ITS-90 was adopted by the International Committee for Weights and Measures (ICPM) in Resolution VII of the 18th International Conference on Weights and Measures (ICPM) in 1989.

1.The temperature unit thermodynamic temperature (symbol t) is a fundamental physical quantity, and its unit is Kelvin (symbol k), which is defined as 1 of the thermodynamic temperature of the triple point of water. Since the difference from the freezing point was used to express the temperature in the previous definition of the temperature scale, these methods are still retained.

By definition, the magnitude of Celsius is equal to Kelvin, and the temperature difference can also be expressed in degrees Celsius or Kelvin. The ITS-90 temperature scale defines both the International Kelvin Temperature (symbol T90) and the International Celsius temperature (symbol T90).

2.General rules of the international temperature scale ITS-90.

ITS-90 is the maximum temperature that can actually be measured by the upward Planck radiation law using monochromatic radiation. ITS-90 is formulated in such a way that, at the full scale, the T90 value at any temperature is very close to the best estimate of T at the time the temperature scale is adopted, and the measurement of T90 is much more convenient, more precise, and highly reproducible than direct measurement of thermodynamic temperature.

The first temperature zone is defined as to, and t90 is defined by the vapor pressure versus temperature of 3he and 4he. The second temperature zone is the point between the neon triple point (t90 is defined by a helium gas thermometer.

The third temperature zone is between the equilibrium hydrogen triple point (to the freezing point of silver), and T90 is defined by a platinum resistance thermometer. It uses a defined set of defined fixed points and uses prescribed interpolation to index.

Silver freezing point (above the temperature zone, t90 is defined by Planck's radiation law, and the reproduction instrument is an optical pyrometer.

The Kelvin temperature scale has an absolute zero of 0 and the Kelvin graduation value is the same as the Celsius temperature scale.

Thermodynamic temperature scale (Kelvin temperature scale).

1. The temperature scale is a standard scale used to measure temperature in order to ensure the unity and accuracy of temperature values. A temperature scale is a set of rules that use numerical values to represent temperature, which determines the unit of temperature.

2. The values of various thermometers are determined by the temperature scale. Temperature is a special quantity, which uses the phase equilibrium temperature of some substances as a fixed point engraved on the scale. The temperature value in the middle of the fixed point is described using a functional relationship called the interpolation function (or interpolation equation).

The thermometer, the fixed point, and the interpolated equation are often referred to as the three elements (or three basic conditions) of the temperature scale.

The explanation of the words of temperature scale is: temperature scale is a standard scale used to measure temperature in order to ensure the unity and accuracy of temperature value.

The explanation of the words of the temperature scale is: the temperature scale is a standard scale used to measure the temperature in order to ensure the unity and accuracy of the temperature value. The phonetic pronunciation is:

One. Pinyin is: wēnbiāo.

The structure is: temperature (left and right structure) standard (left and right structure).

What is the specific explanation of the temperature scale, we will introduce it to you through the following aspects:

Words about temperature scales.

fahrenheit

Idioms about temperature scales.

The merit standard, the green history standard, the same difference, the mistaken recognition of the face standard, the new collar difference, the mutual flaunting, the misidentification of the face mark, the emotion, the interesting bid, the new competition.

Words about temperature scales.

Flaunt each other, misidentify Yan Biao, Wild Goose Tower, high standard, self-flaunting, love and fun, green history, high self-standard, gentle township standard, same felling, different standards, new differences.

Sentence formation about temperature scale.

1. The Fahrenheit temperature scale is a kind of temperature scale with the core interest of socks.

2. Now you need to define the temperature scale.

3. Okay, next time, we will talk about a much better temperature scale, about the ideal gas thermometer, and the derivation of the Kelvin temperature scale.

4. This constant is only determined by temperature, so we now know that we can define an ideal thermometer and temperature scale.

5. The reference point is the freezing point and boiling point of water, and the interpolation is linear, and then it is developed into the Kelvin temperature scale, as we will see later.

The thermodynamic temperature scale is also known as the absolute temperature scale, what is its unit?

a.Kelvin.

b.Thomson.

Correct Answer: a

Thermodynamic temperature, also known as Kelvin temperature scale, absolute temperature scale, referred to as Kelvin temperature scale, is one of the seven basic physical quantities of the International System of Units, the unit is Kelvin, referred to as open, (the symbol is k), which describes the real temperature of the objective world, and is also the basis for formulating the temperature scale of international agreements, and is a method of calibrating and quantifying temperature. Thermodynamic temperature, also known as absolute temperature, is one of the important parameters in thermodynamics and statistical physics. Generally speaking, the absolute zero that Lu Sheng refers to is 0K, which corresponds to minus degrees Celsius.

Relative to 28, the absolute temperature scale of the manuscript should be hermit (). Dong Xiao.

a.-245k (correct answer).