All Questions
Tagged with wavelength momentum
35
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Mass in de Broglie Formula
Regarding de Broglie formula
$$\lambda= h/mv$$
here m is relative mass or rest mass?
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2
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161
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Rigorous derivation of DeBroglie wavelength
I've scoured the internet as much as I can, and I've yet to find a rigorous derivation of the DeBroglie wavelength. They all go something like this:
$$E=\gamma mc^2, \ \gamma \approx 1 \ \therefore\ E=...
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The Uncertainty in momentum and the de Broglie wavelength
I'd like to pose a straightforward question by providing a brief example to determine whether my current approach is correct or incorrect.
Imagine I have an electron confined within a box measuring $1\...
- 113
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What's (intuitively) the $k$ in the de Broglie formula?
Background: I'm currently doing self-study of quantum physics by following university level quantum physics lectures on YouTube (e.g. the YouTube MIT 8.04 Quantum Physics I, Spring 2013 or Stanford ...
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If the particle moves with group wave, what $\lambda$ in De Broglie equation should we use?
according to De Broglie equation
\begin{gather} p=\frac{h}{\lambda} \end{gather}
and knowing also that a particle moves with the group velocity not the phase velocity, indicates that has a range of $\...
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Can you make photons without momentum?
What would it take to make photons without momentum? How would they behave?
- 605
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Can you explain me the definition of wave number as defined in theoretical physics? [duplicate]
Wavenumber, as used in spectroscopy and most chemistry fields, is defined as the number of wavelengths per unit distance.
The corresponding formula is
$$k=\frac{1}{\lambda}.$$
However, in theoretical ...
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2
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What defines an 'object' with regards to particle-wave duality?
If any object, such as a ball, can exhibit wave behavior, I am confused about how such an object is defined. Does a ball itself have a wavelength? Does every single atom that composes it have a ...
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What is exactly mean by wavelength in De Broglie equation?
I'm wondering what exactly is meant by the wavelength in De Broglie formula $p=\frac{h}{\lambda}$, where $p$ is the momentum of a particle and $\lambda$ is the wavelength. I know that a wave function ...
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Why is de Broglie wavelength related to momentum not energy?
From relativity we have $E^2 = (cp)^2 + (mc^2)^2$ which for a photon ($m = 0$) becomes $E = cp$. From quantum mechanics we have for a photon $E = h\nu = hc/\lambda$. Thus together
$$
E = \frac{hc}{\...
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Does the 1/2 coefficient in kinetic energy stem from Newton, the De Broglie wavelength and length contraction? [closed]
This is my thinking. Everything has a De Broglie wavelength. From this the energy of an object can be calculated.
Now due to Special Relativity anything with a velocity experiences length contraction. ...
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How does wavelength affects uncertainty in momentum & position?
The objective is to locate a microscopic particle, in the presence of light of known wavelength and adjustable accordingly.
Brief on the setup.
Let there be a box containing the particles to be ...
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de Broglie wavelength for particles with mass [duplicate]
is $p=\frac{h}{\lambda}$ only true for massless particles? because generally $E=\sqrt{p^2c^2+m^2c^4}$, then if we equate it to $h\nu$ we get $$p=\sqrt{\frac{h^2}{\lambda^2}-m^2c^2}\neq\frac{h}{\lambda}...
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Where to use $E=h \nu$ and $p=h/\lambda$? [closed]
Where to use $E=h \nu$ and $p=h/\lambda$? Because both the methods give different answers. Can somebody explain why is it so?
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What does momentum of Photons mean? [duplicate]
I have already checked out Can a force stop a Photon since Photons have momentum and What does momentum mean when talking about massless particles?, but that didn't answer my query.
I already know ...
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