de brogile

[Carol Sum 1A]

How does the mass of a particle affect its De Broglie wavelength?

[JaciNakamura_1C]

The De Broglie equation is based off of the principle that all objects with mass have wave-like properties. So we derive the equation lambda = planck's constant divided by the objects momentum. We know momentum is mv, so therefore the relationship between wavelength and mass is inverse (assuming velocity is kept constant). As mass increases, wavelength decreases (and visa versa).

[Emma Smith 1D]

Hi, the De Broglie wavelength is inversely proportional to its mass and velocity. So therefore, as the mass of the particle increases the wavelength will decrease, indicating that heavier particles have shorter wavelengths and lighter particles will have longer wavelengths.