De Brogile Equation


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Bianca Barcelo 4I
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Joined: Fri Sep 28, 2018 12:17 am
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De Brogile Equation

Postby Bianca Barcelo 4I » Sat Oct 13, 2018 6:20 pm

Can someone clarify the concept of the De Brogile equation?

Samantha Kwock 1D
Posts: 61
Joined: Fri Sep 28, 2018 12:24 am

Re: De Brogile Equation

Postby Samantha Kwock 1D » Sat Oct 13, 2018 6:40 pm

The DeBroglie equation is used to calculate the wavelength of any moving particle. However, as mentioned in class, all matter has wavelike properties, but this can only be measured for objects with small masses, such as electrons.

Angel Chen 2k
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Joined: Fri Sep 28, 2018 12:20 am

Re: De Brogile Equation

Postby Angel Chen 2k » Sat Oct 13, 2018 6:48 pm

To elaborate off of Samatha's reply, De Brogile wavelength equation is actually the development of previous atomic models. For example, Dalton's model, J.J. Thompson's plum pudding model, Lutherford's nucleus model, and etc. De Brogile proposed that any matter have the properties of both waves and particles. So the De Brogile equation is essentially a summary of his atomic model and theory of quantum mechanics.

Kelsey Li 3B
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Joined: Fri Sep 28, 2018 12:26 am

Re: De Brogile Equation

Postby Kelsey Li 3B » Sat Oct 13, 2018 6:55 pm

As we talked in class, De Brogile Equation is λ = h / (mass x velocity) and this is just used to measure the wavelength of moving particles. H represents Planck's Constant which is 6.626 × 10^-34 m^2 kg/s. Also remember to make sure all units are the same so that it cancels correctly. This equation applies to any moving particle with momentum,p, that has wavelike properties with wavelength λ.

Carine Tamamian 2B
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Joined: Fri Sep 28, 2018 12:23 am

Re: De Brogile Equation

Postby Carine Tamamian 2B » Sat Oct 13, 2018 6:58 pm

The concept is that particles exhibit wave-like properties, λ = h/mv; where h is planck's constant, m is mass, v is velocity (use SI units). Also what was mentioned in class is that if the wavelength is less than 10^-13-18 m, it is not considered to be a wavelength property.

Jewelyana3A
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Joined: Fri Sep 28, 2018 12:24 am

Re: De Brogile Equation

Postby Jewelyana3A » Sat Oct 13, 2018 7:08 pm

De Broglie Equation is basically measuring wavelength through the formula of h/(mass x velocity). H being planck’s constant. It shows that any moving particle with momentum has wavelike properties with wavelength.

Sapna Ramappa 1J
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Joined: Fri Sep 28, 2018 12:24 am

Re: De Brogile Equation

Postby Sapna Ramappa 1J » Sat Oct 13, 2018 7:52 pm

The De Broglie equation enables us to see the wave-like properties of moving objects. We can use the equation ( λ=h/(m*v)) to calculate the wavelength of moving objects/particles (λ is wavelength, h is Planck's constant, m is the mass of a particle, moving at a velocity v).


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