Free De Broglie Wavelength Calculator
Calculate the de Broglie wavelength of a particle: lambda = h / (m * v).
kg
m/s
De Broglie Wavelength
0.00000000072741 m
Wavelength (nm)0.7274 nm
De Broglie Wavelength
All matter has wave-like properties. The de Broglie wavelength describes the wave nature of particles.
Formula
lambda = h / (m * v) = h / p
where h = 6.626 x 10^-34 J·s is Planck's constant and p = mv is the momentum. Heavier or faster particles have shorter wavelengths.
Example Calculation
An electron (m = 9.109e-31 kg) traveling at 1e6 m/s.
- 01lambda = h / (m*v)
- 02lambda = 6.626e-34 / (9.109e-31 * 1e6)
- 03lambda = 6.626e-34 / 9.109e-25
- 04lambda = 7.274e-10 m = 0.7274 nm
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