|Niels Bohr electromagnetism|
- The Bohr magneton is the magnitude
- of the magnetic dipole moment
- of an electron in a circular orbit
- with an orbital angular momentum
- equal to the reduced Planck constant.
- The Bohr magneton is not merely
- the natural unit of magnetism,
- but a physical constant,
- like the speed of light,
- that characterizes our universe.
- The value of the Bohr magneton
- is related to Bohr’s model of the atom.
- It measures the magnetic moment
- of a single electron orbiting an atom.
- It is the electric charge of a proton
- times the Planck constant divided by 2π
- divided by 2 times the electron rest mass
- times the speed of light.
- Universal constants
- Electromagnetic constants
- Atomic and nuclear constants
- Physico-chemical constants
- To understand how things work,
- we construct a theoretical model
- and then establish that all our measurements
- can be constructed from fundamental values.
- We hold these values to be constant
- for all time, everywhere in the universe,
- unlike mathematical constants like π,
- unlike desire, or free will.
- True idealists
- are not Platonic philosopers,
- not even young lovers,
- but theoretical physicists.