Wavelength in QM: Definition & Measurement

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SUMMARY

The discussion centers on the definition and measurement of wavelength in quantum mechanics (QM), specifically the de Broglie wavelength, represented by the formula λ = h/p, where h is Planck's constant and p is the momentum of a particle. Participants clarify that while the wave function does not have direct physical significance, it is crucial for understanding wave-particle duality. The wave function itself is not something that can be measured directly, but it plays a vital role in the interpretation of quantum phenomena.

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  • Understanding of quantum mechanics principles
  • Familiarity with de Broglie wavelength
  • Knowledge of Planck's constant
  • Basic concepts of wave-particle duality
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  • Explore the implications of wave-particle duality
  • Learn about the mathematical formulation of wave functions
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Students and professionals in physics, particularly those focusing on quantum mechanics, wave-particle duality, and the mathematical foundations of wave functions.

suku
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Can anyone tell me how is wavelength defined for a wave associated with a particle?
If the wave function we are speaking of has no physical significance,then how can measure its length?
tks for any rpl
 
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By "wavelength" in QM one usually means the de Broglie wavelength, defined by
\lambda=\frac{h}{p}
where p is the momentum of a particle and h is Planck's constant.

The wavefunction is neither physically insignificant nor something you measure directly. For a basic introduction to what the wavefunction means, see the library article on wave-particle duality; for a more technical description see that on wave function.
 

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