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Quantum Physics: Plank’s Constant

If Planck’s constant is zero:

- First, energy of radiation would be zero.

E = h x f. So, h = E/f where h is Planck’s constant, E is energy and f is the frequency

of the particle. If that is 0=E/f that means that E= 0

- Second, particles would not have wave properties.

Matter wave length (m) = h / mv where h is Planck’s constant, m is mass and v is

velocity. When h equals 0, matter wave length would be zero as well.

- Third, the uncertainty principle would be meaningless.

(Δx)·(Δv) ≈ h/m whereΔx is uncertainty in position, Δv is uncertainty in

velocity, h is Plank’s constant and m is mass. If h equals 0, (Δx)·(Δv) would

equals 0. Then, there would be no uncertainty because we could predict both

velocity and position with pinpoint accuracy.

- Forth, when h = 0, there would be no quantum physics and Newtonian physics

would be valid.

Comments about Planck's Constant

1) Planck's constant proves to have a very small value.

2) The quantity, h, is the central constant of quantum physics.

3) In a universe in which h = 0, there would be no quantum physics and classical

physics would be valid in the sub-atomic domain.

4) [for the Bohr model of the hydrogen atom, in the equation of the angular

momentum of the electron电子动量] ... Planck's constant appears again in a

fundamental way.

5) Planck's constant, h, probably appears nowhere that has more, deep-seated

significance than in the Uncertainty Principle.

6) We can always tell whether a particular theory is a classical or a quantum theory

by inspecting its results to see whether Planck's constant, h, enters. If it contains h,

either explicitly or hidden in a numerical factor with other constants, the theory is a