De Broglie's Equation


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Clara Cho 2K
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Joined: Wed Sep 18, 2019 12:18 am

De Broglie's Equation

Postby Clara Cho 2K » Sat Oct 12, 2019 2:13 pm

Under what parameters can De Broglie's equation be used?

Gerald Bernal1L
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Joined: Thu Jul 11, 2019 12:16 am

Re: De Broglie's Equation

Postby Gerald Bernal1L » Sat Oct 12, 2019 2:40 pm

It works for any particle (object that has rest mass) with momentum. It is used for objects such as cars or baseballs as shown in the lecture which do not have detectable wavelengths. De Broglie claimed that all particles must have wave like properties.

ZainAlrawi_1J
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Joined: Sat Aug 24, 2019 12:16 am

Re: De Broglie's Equation

Postby ZainAlrawi_1J » Sat Oct 12, 2019 2:42 pm

The De Broglie equation is used to describe the wave properties of matter, and as such the equation is reserved for things that have mass, such as electrons.

In practice, De Broglie is used when we are solving for an object's wavelength, and it has mass.

This is in contrast to what you would use when working with photons, which are massless, wherein you would use c=λν or E=hν

Marykate Abad 3L
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Re: De Broglie's Equation

Postby Marykate Abad 3L » Sat Oct 12, 2019 2:47 pm

De Broglie's equation can be used to solve for an object's wavelength given a mass.

Siya Shah 1J
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Joined: Sat Aug 17, 2019 12:15 am

Re: De Broglie's Equation

Postby Siya Shah 1J » Sat Oct 12, 2019 2:48 pm

De Broglie's equation concerns the variables of wavelength, velocity, and mass of an electron, as well as Planck's constant. The equation is used to describe the wave-like properties of elementary particles (including electrons), neutral atoms and molecules.

rohun2H
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Re: De Broglie's Equation

Postby rohun2H » Sat Oct 12, 2019 3:27 pm

Any moving particle with momentum, cannot be applied to light.

ShastaB4C
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De Broglie's Equation

Postby ShastaB4C » Sat Oct 12, 2019 5:50 pm

Does “v” represent velocity or frequency? We used to use it for frequency for E=hv but for de Broglie’s it’s velocity?

Leslie Almaraz 4G
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Joined: Fri Aug 02, 2019 12:16 am

Re: De Broglie's Equation

Postby Leslie Almaraz 4G » Sat Oct 12, 2019 6:16 pm

Responding to the person above, for E=hv, the v represents frequency. This is not the same symbol that is used for Debroglie's question which it wavelength= h (plank's constant)/, p (momentum). Momentum is also equal to mass x velocity, which is not the same as the v representing frequency.

Debora Fernandez Clemente_ 4H
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Re: De Broglie's Equation

Postby Debora Fernandez Clemente_ 4H » Sat Oct 12, 2019 11:10 pm

Can someone explain the difference between the De Broglie's and Heisenberg's equation?

Kim Chen
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Joined: Thu Oct 10, 2019 12:15 am

Re: De Broglie's Equation

Postby Kim Chen » Sat Oct 12, 2019 11:21 pm

To answer the above person — I don't have an exact explanation (might be a good question to ask during OH if you're curious about it/want to conceptualize), but De Broglie's relates the momentum and wavelength of a wave (hence wave-particle dualism), whereas Heisenberg's has nothing to do with this. However, De Broglie's principle follows Heisenberg's uncertainty principle.

Trent Yamamoto 2J
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Re: De Broglie's Equation

Postby Trent Yamamoto 2J » Sun Oct 13, 2019 12:06 am

De Broglie is applied when we are solving for an object's wavelength, and the the resting mass is given. For example, it could be the baseball being hit or a car moving.

briannam_1F
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Re: De Broglie's Equation

Postby briannam_1F » Sun Oct 13, 2019 11:20 pm

Can you use De Broglie’s equation to find the wavelength in regards to electrons?

AveryAgosto
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Joined: Wed Sep 18, 2019 12:16 am

Re: De Broglie's Equation

Postby AveryAgosto » Mon Oct 14, 2019 11:19 pm

Any problem referring to wavelength, velocity, and mass.

Maddie
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Joined: Wed Sep 11, 2019 12:17 am

Re: De Broglie's Equation

Postby Maddie » Mon Oct 14, 2019 11:28 pm

It only works for real particles


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