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Modern Physics

de Broglie Wavelength

λ=hp=hmv\lambda = \frac{h}{p} = \frac{h}{mv}

All matter has wave-like properties. The wavelength is inversely proportional to momentum.

Variables

\lambda
de Broglie wavelength
m
h
Planck constant
J·s
p
Momentum
kg·m/s
m
Mass
kg
v
Velocity
m/s

Derivation

Proposed by de Broglie, combining wave and particle aspects of matter.

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Common questions

What is the de Broglie Wavelength formula?

de Broglie Wavelength is written λ= h/p = h/mv. All matter has wave-like properties. The wavelength is inversely proportional to momentum. It belongs to Modern Physics, under Quantum Mechanics.

What are the units in λ= h/p = h/mv?

In SI units, \lambda is de broglie wavelength, measured in m; h is planck constant, measured in J·s; p is momentum, measured in kg·m/s; m is mass, measured in kg; v is velocity, measured in m/s.

How is the de Broglie Wavelength formula derived?

Proposed by de Broglie, combining wave and particle aspects of matter. The result is λ= h/p = h/mv.