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Absolute zero.
Absolute zero, the beginning of the absolute temperature scale, is the lowest limit of temperature, equivalent to — when all atomic and molecular heat movement stops. This is a minimum temperature that can only be approached but not reached. Humans achieved low temperatures in 1926, low temperatures in 1933, and ultra-low temperatures in 1957.
At present, people have even achieved a low temperature of only 30 millionths of a degree from absolute zero, but it is still impossible to achieve absolute zero.
If there is absolute zero, can it be detected? Is there an instrument that measures temperature that can measure absolute zero without interfering with the system being tested (if the system under test is disturbed, the atoms will move, so that it is not absolute zero)? Indeed, absolute zero cannot be measured because it is calculated, and it has been found that when the temperature decreases, the activity of molecules slows down, so it is calculated that when it drops to absolute zero, the molecules are stationary, so the concept of absolute zero is derived.
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Brother, you ask questions and make it clear, so you don't have to paste a temperature post for you like a buddy on the first floor to fool you. Ha ha! A zero-degree angle on a football pitch is, of course, parallel to the goal line (or baseline), such as a zero-degree shot from a corner kick from the corner flag area.
But many times the player shoots near the bottom line and the ball is also said by the commentator to be a zero degree angle, in fact, from the point of view of physics, this statement is not completely accurate, because the shooting location and the goal line of the straight line do not constitute a zero degree angle, but because the angle is extremely small, it is said to be a zero degree angle, in order to show that the goal is beautiful!
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Absolute zero is approximately equal to minus degrees Celsius (.
1. Absolute zero is the lowest temperature of thermodynamics, but it is only a theoretical lower limit. The unit of the thermodynamic temperature scale is Kelvin (k), and the absolute zero is the zero point defined by the Kelvin temperature scale (referred to as the Kelvin temperature scale and denoted as k).
k, which is 0 degrees Kelvin, is approximately equal to minus degrees Celsius (. Theoretically, if the kinetic energy of a particle is as low as the lowest point of quantum mechanics, the matter reaches absolute zero and cannot be lower. However, absolute zero is the lowest temperature that cannot be reached, and the temperature in nature can only be approximated infinitely.
If it arrives, then everything will reach the lowest form of motion. Because any space must contain energy and heat, and they are constantly changing and not disappearing. So absolute zero does not exist unless the space is free of any energy heat from the beginning.
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Absolute 0 degrees is minus.
Absolute zero is the lowest thermodynamic temperature, but this is the theoretical lower limit. The unit of the thermodynamic temperature scale is Kelvin (k), and absolute zero is the zero point defined by the Kelvin temperature scale. 0K is approximately minus degrees Celsius.
The temperature of a substance depends on the kinetic energy of the atoms, molecules, etc. within it.
According to Boltzmann, the higher the kinetic energy of the particle, the higher the temperature of the substance. Theoretically, if the kinetic energy of the particle is as low as the lowest point of quantum mechanics, the matter reaches absolute zero and cannot be lower. However, absolute zero can never be reached, it can only be approached infinitely.
Because any space must contain energy and heat, and they are constantly converting into each other without disappearing.
The origin of absolute zero:
Kelvin is a unit of thermodynamic temperature named after the surname of the British scientist Kelvin. In 1848, the British scientist Duanlian Thomson first proposed the theory of "thermodynamic temperature", which was soon recognized internationally. In 1854, William Thomson proposed that the unit of thermodynamic temperature could be determined by selecting a fixed point.
As early as 1787, the French physicist Charles discovered that when the pressure is constant, the increase in the volume of a certain amount of gas (expansion rate) is a fixed value for every 1 increase in temperature, and the volume expansion is linearly related to the temperature. Reputation.
The initial experiments gave the value of 1 269 to the volume of the gas at 0, which was later revised by a number of people after decades of experiments, notably the work of the Frenchman Guy Lussac in 1802. The above gas volume vs. temperature is expressed by the formula as follows: v v0 (1 t.
The above content reference: Encyclopedia - Thermodynamic Temperature.
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Absolute zero is equal to minus (.
The unit of the thermodynamic temperature scale is Kelvin (k), and absolute zero is the zero point defined by the Kelvin temperature scale (referred to as the Kelvin temperature scale, denoted as k). 0k is approximately equal to minus degrees Celsius on the temperature scale, which is 0 degrees Kelvin, at this temperature, the molecules of the object have no kinetic energy and potential energy, and the kinetic potential energy is 0, so the internal energy of the object is 0 at this time. Absolute zero is the lower limit of the theoretical only.
Code Tour. The coldest place in the universe discovered by Chilean astronomers, the coldest place in the universe is called the "Pullback Bar Nebula", where the temperature is minus 272 degrees Celsius, which is the coldest place in nature known so far, called the "cosmic ice box". In fact, Bumoje's Nebula is only nearly 1 degree above absolute zero (minus).
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Absolute zero is equal to minus (.
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 international protocol temperature scale, which 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. The term "absolute zero" is 0 K, which corresponds to minus degrees Celsius.
Introduction of zero point energy
At absolute zero, any energy should disappear. But even at absolute zero, there is still an energy that exists, which is the vacuum zero point energy.
Vacuum zero-point energy, named after the vibration of particles found at absolute zero. This is the huge background energy contained in the quantum vacuum. Heisenberg's uncertainty principle states that it is not possible to know the position and momentum of a particle at the same time with a high degree of accuracy.
Therefore, when the temperature drops to absolute zero, the particles must still be vibrating; Otherwise, if the particle comes to a complete stop, its momentum and position can be accurately measured at the same time, which is contrary to the principle of inaccuracy. The energy of the vibration (zero-point vibration) of such a particle at absolute zero is the zero-point energy.
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Absolute zero refers to the temperature scale of degrees Celsius minus degrees, that is, minus degrees. Absolute zero is the lowest temperature in thermodynamics, and its thermodynamic temperature scale unit is k, so absolute zero is 0k. Absolute zero is the lowest temperature in thermodynamics, a theoretical lower limit that is actually extrapolated by the laws followed by ideal gases.
Absolute zero is the temperature at which the entire universe is free of any energy and heat, where all matter is completely free of particle vibrations and has a total volume of zero. At absolute zero, the molecules of the object lose their kinetic energy, but they are still purely potential, and the internal energy at this point is also the minimum.
Fahrenheit at absolute zero
Absolute zero is ( Absolute zero, the lowest temperature that can theoretically be reached. The zero degree that is set as the thermodynamic temperature scale (absolute temperature scale) is called absolute zero.
Celsius, the temperature at freezing point is 0 degrees Celsius, and the boiling point is 100 degrees Celsius. Whereas Fahrenheit sets the freezing point at 32 degrees Fahrenheit and the boiling point at 212 degrees Fahrenheit. So 1 degree Celsius (1 equal part) is equal to 9 5 degrees Fahrenheit, then according to the freezing temperature, the conversion formula for Celsius to Fahrenheit can be obtained is:
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