## When to use the de Broglie equation?

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

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romina_4C
Posts: 100
Joined: Thu Jul 11, 2019 12:17 am

### When to use the de Broglie equation?

Do you only use this equation to find the wavelength or velocity of something that is not light (electrons, atoms, objects, etc.)?

Lindsey Chheng 1E
Posts: 110
Joined: Fri Aug 30, 2019 12:16 am

### Re: When to use the de Broglie equation?

romina_4C wrote:Do you only use this equation to find the wavelength or velocity of something that is not light (electrons, atoms, objects, etc.)?

Yes, I believe so since De Broglie is for any moving particle with momentum, p, that has wavelike properties with wavelength.

Megan Ngai- 3B
Posts: 50
Joined: Fri Aug 09, 2019 12:17 am

### Re: When to use the de Broglie equation?

Whenever there is a mass given.
The equation E=hv and c=(wavelength)v would be specifically for light since c is used.

Aprice_1J
Posts: 55
Joined: Wed Sep 18, 2019 12:16 am

### Re: When to use the de Broglie equation?

Is there an easy way to recognize if it is talking about light/photon properties or wavelength properties? What is usually given and what are you usually asked to find?

HuyHa_2H
Posts: 100
Joined: Wed Sep 11, 2019 12:15 am

### Re: When to use the de Broglie equation?

Yeah, you pretty much use the De Broglie equation when you're given or given enough to find either the mass, velocity, or wavelength of an object that is not massless.

Kylie Lim 4G
Posts: 110
Joined: Sat Aug 17, 2019 12:15 am

### Re: When to use the de Broglie equation?

For finding the wavelength of anything that is not light, or in the photoelectric effect if you need to find velocity of an electron

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