Basic Examples (8)
The QED Euler-Heisenberg Lagrangian factor is measured with the SI derived unit
. Express this as a combination of the Rydberg constant

for time, the speed of light

for length, the reduced Planck constant

for mass, and the Josephson constant

or the Von Klitzing constant

for electric current:
Transform the quantity
into a natural unit system form:
Specify the basis of the unit system as the speed of light, the Josephson constant, the reduced Planck constant, the Rydberg constant, and the Boltzmann constant:
The quartic Cauchy coefficients are measured in
. Transform this to the Planck unit system:
The quartic Casimir operator of the Poincare group is measured in
. Express this as a product of the SI defining constants:
Compute an approximate answer:
Find the form of a unit in Stoney units:
Find the canonical dimensional product for the QED Euler-Heisenberg Lagrangian factor: