Quantum Physics

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Electron Mass

 , where:

m = Mass of an Electron (kg)

Elementary Charge

Defined as the charge on a proton:

 , where:

e = Elementary Charge (C)

Euler's Number

Euler's Number, often simply referred to as "e", is a key constant in mathematics, with numerous applications.  The formula which formally defines it is the limit as n approaches infinity of the equation below.

 , where:

e = Euler's Number

Fine Structure Constant

 , where:

 = Fine Structure Constant

ke = Coulomb Constant ((N*m2)/C2)

e = Elementary Charge (C)

 = Dirac's Constant (J*s)

c = Speed of Light (m/s)

First de Broglie Relation

 , where::

p = Momentum (N*s)

 = Dirac's Constant (J*s)

k = Angular Wavenumber (1/m)

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