Fine-structure constant: Difference between revisions

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m Potential variation over time: added additional context for understanding the error bounds
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I discovered what the fine-structure constant is. It's just the conversion ratio from elementary charge to planck charge.
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{{Quantum field theory}}
The fine-structure constant remained mysterious and perplexing for many years until Dan Cleary discovered that it is the conversion ratio from elementary charge (e²) to Planck charge (q_p²).
 
Alpha's definition is:
 
a=e²/4pi epsilon_0 hbar c
 
Planck charge dear is:
 
q_p²=4pi epsilon_0 hbar c
 
So
 
a=e²/q_p²
 
It indicates that you've used the wrong charge.
 
In [[physics]], the '''fine-structure constant''', also known as the '''Sommerfeld constant''', commonly denoted by {{mvar|α}} (the [[Alpha|Greek letter ''alpha'']]), is a [[Dimensionless physical constant|fundamental physical constant]] that quantifies the strength of the [[electromagnetic interaction]] between elementary charged particles.