Planck and Boltzmann Distribution

In summary, the conversation discusses the knowledge of Max Planck about the Boltzmann distribution and his introduction of the Planck constant, with reference to Wikipedia articles. It is mentioned that Planck's value for h was close to the modern value, and that the Boltzmann distribution was identified by J.W. Gibbs in 1901. There is also a mention of a Boltzmann-Maxwell distribution.
  • #1
lonewolf219
186
2
Does anyone know if Max Planck knew about the Boltzmann distribution before he published his results in 1900? Also, when Planck introduced h, did he also give the value?
 
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  • #3
Thanks, SteamKing. I think I read somewhere that Planck invoked the Boltzmann distribution... anyone have any other thoughts? Maybe it hadn't been published yet, but Planck knew about it?
 
  • #4
It depends on which Boltzmann distribution you refer. The attached article in post #2 refers specifically to a Boltzmann distribution, which was derive from earlier work by B. There is also a Boltzmann-Maxwell distribution, which was derived more or less contemporaneously by B. and Clerk Maxwell.
 
  • #5


I can provide some information about Planck and Boltzmann distributions. Max Planck and Ludwig Boltzmann were both influential physicists in the late 19th and early 20th centuries, and their work laid the foundation for modern quantum mechanics and statistical mechanics.

It is not clear if Planck knew about the Boltzmann distribution before publishing his results in 1900. However, it is likely that he was familiar with Boltzmann's work, as they both studied under the same physicist, Joseph Stefan, at the University of Vienna. Additionally, Planck was in communication with Boltzmann and other physicists during the time he was developing his theory of blackbody radiation.

When Planck introduced the constant h in his theory of blackbody radiation, he did not explicitly give a numerical value for it. It was later determined to be approximately 6.626 x 10^-34 joule-seconds, and this value is now known as Planck's constant. It was not until 1905, when Albert Einstein used Planck's constant in his theory of the photoelectric effect, that its significance and value became more widely recognized.

Overall, the work of both Planck and Boltzmann has had a significant impact on our understanding of the behavior of particles at the atomic and subatomic level, and their contributions continue to be studied and built upon by scientists today.
 

1. What is the Planck distribution and how does it relate to the Boltzmann distribution?

The Planck distribution, also known as the blackbody distribution, describes the distribution of energy emitted by a blackbody at a given temperature. It can be derived from the Boltzmann distribution, which describes the distribution of particles in a system at a given energy level. Both distributions are closely related and are fundamental in understanding the thermal properties of matter.

2. How is the Planck distribution used in physics and engineering?

The Planck distribution is used in many areas of physics and engineering, such as thermodynamics, astrophysics, and optics. It is used to understand and predict the behavior of electromagnetic radiation emitted by objects at a given temperature, and has applications in fields such as thermal imaging, solar energy, and LED technology.

3. What is the significance of the Planck constant in the Planck distribution?

The Planck constant, denoted by h, is a fundamental constant in quantum mechanics and is a key component of the Planck distribution. It relates the energy of a photon to its frequency through the equation E = hf, where E is energy, h is Planck's constant, and f is frequency. This allows us to understand the energy distribution of blackbody radiation, which is described by the Planck distribution.

4. How does temperature affect the Planck distribution?

The Planck distribution is dependent on temperature, as the distribution of energy emitted by a blackbody is directly proportional to its temperature. As temperature increases, the peak of the distribution shifts to shorter wavelengths, meaning that more energy is emitted at higher frequencies. This is known as Wien's displacement law and is a key concept in understanding the thermal properties of matter.

5. What is the relationship between the Planck distribution and the Stefan-Boltzmann law?

The Stefan-Boltzmann law describes the total energy emitted by a blackbody per unit time and unit surface area, and is derived from the Planck distribution. The law states that the total energy radiated is proportional to the fourth power of the temperature, and is often written as E = σT^4, where σ is the Stefan-Boltzmann constant. This relationship allows us to calculate the total energy emitted by objects at different temperatures and is important in fields such as astrophysics and climate science.

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