Velocity using de Broglie equation

$\lambda=\frac{h}{p}$

Schuyler_Howell_4D
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Velocity using de Broglie equation

Why do we use $p=h*\lambda ^-^1$
instead of $\lambda =c*v$ to find the velocity of a neutron?

Michael Torres 4I
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Re: Velocity using de Broglie equation

(lambda)=c(nu) really only works for photons and electromagnetic radiation because it incorporates the speed of light. Neutrons do not travel at the speed of light. When dealing with objects that have rest mass, you should use DeBroglie's equation.

Kenan Kherallah 2C
Posts: 78
Joined: Fri Sep 28, 2018 12:17 am

Re: Velocity using de Broglie equation

You also use p = h times wavelength ^-1 because this is the only particular way for us to get the desired units