Can we now explain the Fine Structure Constant?

In summary, Dirac discusses the Fine Structure Constant of 1/137 in this video. Although Hans Bethe wrote a paper linking it to absolute zero, it was meant as a joke and caused some backlash. The equation does work, but it was later withdrawn.
  • #1
RobbyQ
25
11
In this video Dirac talks about the Fine Structure Constant 1/137.
Can we now explain why this is?

 
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  • #2
No, we can't explain why it is (approximately) 1/137.
 
  • #3
But Hans Bethe wrote a paper showing that it was related to absolute zero $$ T_0=(1-\frac 2 \alpha )$$ where ## T_0## is absolute zero in Celsius and alpha the fine structure constant (G. Beck, H. Bethe & W. Riezler 1931: Naturwissenschaften 19, 39.)
 
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  • #4
He was making fun of Eddington. Pissed some people off. He was a tremendously interesting fellow...perhaps the most interesting I ever met. But the publication did finally get formally withdrawn.
 
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  • #5
I tested out the equation above on a calculator and it works!
 
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  • #6
Quantum_Physics123 said:
I tested out the equation above on a calculator and it works!
It works, but that’s what makes it a good joke.
 
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1. What is the Fine Structure Constant?

The Fine Structure Constant, denoted by α, is a dimensionless physical constant that characterizes the strength of the electromagnetic force between elementary particles. It is a fundamental constant in quantum electrodynamics and plays a crucial role in understanding the structure of atoms and molecules.

2. Can the Fine Structure Constant be explained?

Yes, the Fine Structure Constant can be explained through various physical theories and mathematical equations. However, the exact value of α is still a mystery and is considered one of the greatest unsolved problems in modern physics.

3. How is the Fine Structure Constant calculated?

The Fine Structure Constant is calculated by dividing the speed of light by the elementary charge squared and the Planck constant. This value is approximately equal to 1/137 or 0.0072973525664.

4. Why is the Fine Structure Constant important?

The Fine Structure Constant is important because it governs the strength of the electromagnetic force, which is one of the four fundamental forces of nature. It also plays a crucial role in understanding the behavior of particles and the structure of atoms and molecules.

5. Can changes in the Fine Structure Constant affect the laws of physics?

There is currently no evidence to suggest that the Fine Structure Constant can change. However, some theories suggest that small variations in α could have a significant impact on the laws of physics and the fundamental constants of the universe.

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