The Fine Structure Constant

  • Thread starter Himanshu
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  • #1
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The dimensionless pure number 1/137 obtained from the bohr theory (e^2/2hc epsilon_0) is given a particular name 'The Fine Structure Constant'.

What is the significance of this number? Why has this value a name?
 

Answers and Replies

  • #3
mgb_phys
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It fundementally ties the charge of the electron to qunatum mechanics - it's also odd that it pops up out of nowhere with no dimensions (after a bit of fiddling with 2pi)
 

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