Top of Part 2
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2-5: Summary of Part 2 |
Let us summarize what we have learned in Part 2. |
(1) |
It has been explained
that the particle-wave double nature
(duality)
which was the greatest
mystery in the microscopic world
is beautifully unified
in quantum mechanics.
When a particle of matter or light interacts with other materials, the particle nature manifests itself. When the wave of probability (or wave function) interferes with itself, the wave nature appears. |
(2) | The law of classical mechanics (Newtonian equation of motion) is included in quantum mechanics in the form of Ehrenfest's theorem. |
(3) | If we measure the position and the momentum of a particle simultaneously, each resultant data would show some dispersion or uncertainty originating from the particle-wave duality and the dispersion would satisfy the uncertainty relation. |
(4) | It is impossible for experiment to exceed this uncertainty relation. In this sense, quantum mechanics is considered to be a complete theory. |
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