De Broglie Wavelength
The wavelength associated with a massive particle, expressing its intrinsic wave-like character.
Governing formula
λ = h / p = h / (m v)
SI unit
m or nm (Wavelength)
In depth
Louis de Broglie hypothesized in 1924 that if electromagnetic radiation exhibits particle properties, matter particles must exhibit wave properties. Wavelength λ is inversely proportional to particle momentum p.
Examples in the real world
Transmission Electron Microscopes (TEM) using fast electrons with picometer wavelengths to resolve atomic structures.