## DeBroglie Equation

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Joined: Thu Jul 11, 2019 12:17 am

### DeBroglie Equation

Why can't the DeBroglie Equation be applied to light?

DarrenKim_1H
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### Re: DeBroglie Equation

Because light has no mass

Trinity Vu 1D
Posts: 53
Joined: Fri Aug 30, 2019 12:15 am

### Re: DeBroglie Equation

This is because DeBroglie equation refers to moving particles such as a car or an electron. However, light is electromagnetic radiation and therefore you could only apply the electromagnetic equations λv=c and E=hv to photons.

Sukanya Mohapatra 2G
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### Re: DeBroglie Equation

Light does not have mass, so the DeBroglie equation would not work.

abby hyman
Posts: 87
Joined: Thu Jul 25, 2019 12:16 am

### Re: DeBroglie Equation

Since you have to have a mass to find wavelength using DeBroglie's equation, it would be impossible for it to work for light because light has no mass.

Nuoya Jiang
Posts: 99
Joined: Sat Sep 14, 2019 12:17 am

### Re: DeBroglie Equation

Considering the DeBroglie equation, which needs you to calculate the momentum=mv, the light does not have a mass, so you can't use this equation for light.

205154661_Dis2J
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Joined: Wed Sep 18, 2019 12:21 am

### Re: DeBroglie Equation

The DeBroglie Equation can not be applied to light because light has no mass.

Marty Hockey
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Joined: Wed Sep 18, 2019 12:19 am

### Re: DeBroglie Equation

When using the DeBroglie equation, do the units for mass have to be in grams, and does the velocity have to be in meters per second?

Lauren Sanchez 3D
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Joined: Sat Aug 24, 2019 12:17 am

### Re: DeBroglie Equation

So, De Broglie's equation can only be applied to things that have a mass and velocity (p)?

RasikaObla_4I
Posts: 100
Joined: Thu Jul 25, 2019 12:15 am

### Re: DeBroglie Equation

The DeBroglie Equation is only used for any moving particles with momentum and has wavelike properties with wavelength. Light does not have any mass so it cannot be used to calculate momentum.