De Broglie's Equation

[Sophia Dinh 1D]

Why cant the De Broglie's equation be used for light?

[Elena Bell 1C]

De Broglie's equation requires an object to have a mass, therefore, the equation cannot be used for light because light does not have a mass.

[Edmund Zhi 2B]

The photons have no mass. Keep in mind that there is a similar situation in which we cannot apply equations for electromagnetic radiation to electrons. For example, we cannot use c = lambda nu for problems involving properties of electrons.

[Tracy Tolentino_2E]

De Broglie's equation is used for objects that has mass and behaves similarly to a wave. It also require momentum or velocity. Light theoretically doesn't have mass so the equation can't be used.

[Ruth Glauber 1C]

No, light cannot be used.

[Jillian C 4C]

The equation requires an object that has mass, but light does not have that. Thus, light cannot be used in this equation.

[Petrina Kan 2I]

While all the previous replies have stated that light doesn't have mass and I agree, I just wanted to add that I remember Dr. Lavelle saying that the equation can only be used for particles with rest mass (mass at rest). It can be applied to everything else but light.

[BCaballero_4F]

Light does not have mass, which is a required variable in the De Broglie equation.

[Leslie Almaraz 4G]

De Broglie used light in order to derive the equation. The equation will work for any particle with momentum and it has a wavelength with its properties.

[Zoya Mulji 1K]

De Broglie suggested that the equation works for any particle with momentum, that has a rest mass, and has wavelike properties.

[Debora Fernandez Clemente_ 4H]

What is the difference between λ=h/p and c= λ*ν

[405268063]

The first equation you've listed is the De Broglie equation and that's used for electrons or objects that have a mass. You cannot use light with the De Broglie equation. The second equation you CAN use for photons (light).

[Megan Ngai- 3B]

De Broglie's equation requires an object to have a mass
wavelength = h/mv

[005321227]

since wavelength=h/mv, the object must have a mass. While Light has a velocity, it does not have a mass to calculate

[ValerieChavarin 4F]

A photon does not have mass which is required for the de Broglie's equation where

[Kaitlyn Jang 1F]

You need to have mass to use the De Broglie Equation, however photons of light do not have mass.

[HuyHa_2H]

Photons don't have mass so the equation isn't applicable for it.

[Emil Velasco 1H]

Photons do not have mass, only momentum.