Where \ alpha is the fine structure constant and r _ 0 A ^ { 1 / 3 } is the radius of a nucleus, giving r _ 0 to be approximately 1.25 femtometers.
42.
Where \ alpha \ approx 1 / 137 is the fine structure constant, and \ hbar / m _ { \ mathrm { e } } c is the Compton wavelength of the electron.
43.
The modifications of the energy due to using the Dirac equation rather than the Schr�dinger solution is of the order of ? 2, and for this reason ? is called the fine structure constant.
44.
Other scientists pointed out that geologic processes, like naturally occurring nuclear fission, have been used to determine that the fine structure constant has probably changed little over the past two billion years on Earth.
45.
There Z is the atomic number, \ alpha _ \ text { fine } \ approx 1 / 137 the fine structure constant, \ hbar the reduced Planck's constant and c the speed of light.
46.
The team found that the fine structure constant _ a number that determines the strength of electromagnetic force and thus the speed of light _ may have been ever so slightly smaller billions of years ago.
47.
So, in the programmer example of Someguy1221, if the fine structure constant were slightly different, electrodynamics would have been affected, but you could still have slightly different people writing the same computer programs on slightly different computers.
48.
The role of in Eqs . 1, 2 is played by the fine structure constant and the Landau scale for QED is estimated as 10 286 eV, which is far beyond any energy scale relevant to observable physics.
49.
The electron relative atomic mass is an adjusted parameter in the CODATA set of fundamental physical constants, while the electron rest mass in kilograms is calculated from the values of the Planck constant, the fine structure constant and the Rydberg constant.
50.
Working with Churchill and John Barrow at Sussex University, team leader John Webb and his colleagues at the University of New South Wales in Sydney, Australia, used a new technique to measure the fine structure constant at various epochs of the Universe.
