## De Broglie wavelengths

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

rkang00
Posts: 69
Joined: Fri Sep 28, 2018 12:25 am

### De Broglie wavelengths

Are De Broglie wavelengths used for large particles? How do we know when to use the De Broglie equation to get a wavelength? It's confusing when to use the De Broglie or the E=hv equation.

Sameen Mahmood 3D
Posts: 37
Joined: Wed Jun 13, 2018 3:00 am

### Re: De Broglie wavelengths

De Broglie wavelengths are used for large particles as well as anything that has rest mass. You'll know when to use it based on the parameters given; for instance, if you are given mass, velocity, momentum, or wavelength, you can predict that you'll have to use De Broglie because the other equation uses joules and frequency/wavelength.

isarose0
Posts: 62
Joined: Fri Sep 28, 2018 12:15 am

### Re: De Broglie wavelengths

Is de Broglie more commonly used for small or large particles? Does size matter?

George Ghaly 2L
Posts: 66
Joined: Fri Sep 28, 2018 12:29 am
Been upvoted: 1 time

### Re: De Broglie wavelengths

De Brogile equation is used for any object with moment and wavelength, so in reality it could be applied to almost all scenarios although it would be pointless if it used on an object with a large wavelength.