Recent content by Ngineer
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Electrical properties of a molecule
Hello everyone, Is there a straightforward way to determine the electrical properties, such as the dielectric constant (or function), of a molecule (for instance, a metal oxide)? I understand a simple weight-average model wouldn't work for various reasons. Thanks so much!- Ngineer
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- Electrical Molecule Properties
- Replies: 1
- Forum: Materials and Chemical Engineering
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Graduate Is Snell's law incompatible with interface conditions? What went wrong?
Thanks! that was probably it! -
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Graduate Is Snell's law incompatible with interface conditions? What went wrong?
I'm not making a claim, I'm asking what went wrong in this particular derivation because I can't figure it out. -
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Graduate Is Snell's law incompatible with interface conditions? What went wrong?
For the second medium, εr = μr = 10 -
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Graduate Is Snell's law incompatible with interface conditions? What went wrong?
Hi Andy, E1 = 5V/M * [0.6,0.8] = [3,4,0] V/M Using the conditions for continuity at the interface: E2x = E1y = 3 E2y = E1y * (epsilon1/epsilon2) = 4 * 1/10 = 0.4 So E2 = [3, 0.4, 0] V/M = 3.02 V/M * [ 0.991, 0.1321, 0 ] For H2, H1 = [0,0,5/377] A/M Hence H2z = H1z * meu1/meu2 = 0.5/377 A/M... -
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Graduate Is Snell's law incompatible with interface conditions? What went wrong?
Hi everyone, Someone posted this hypothetical problem on a facebook group and I am wondering what your thoughts are. The issue is that Snell's law does not seem to hold when applied to the transmitted wave (calculated using the electromagnetic interface conditions.) Here is an example... -
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Magnetic force on a wire due to a loop
I just need to confirm my intuition that the magnetic force on the wire carrying I2 is 0. Basis for my intuition: * Right above the center of the loop carrying I1, the magnetic field lines are in exactly the same direction as the piece of wire carrying I2, so [a] x [B1] = 0. (photo from...- Ngineer
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- Force Loop Magnetic Magnetic force Wire
- Replies: 1
- Forum: Introductory Physics Homework Help
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Deriving the ∫dω1 integral in 2nd-order polarization
Yes. I have actually corresponded with the professor that posted the online lectures I linked in the original post, and he kindly answered in detail, so I marked this post as solved. Thanks for your kind help.- Ngineer
- Post #5
- Forum: Advanced Physics Homework Help
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Graduate Symmetry of the permittivity tensor of lossless media
I read in various sources (such as page 8 of these notes) that the dielectric permittivity tensor of a lossless medium is always symmetric. I am wondering how this can be the case, when: Phase accumulation in the medium could in theory depend on direction Coordinate system may be rotated to...- Ngineer
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- Dielectric Permittivity Symmetry Tensor
- Replies: 2
- Forum: Electromagnetism
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Deriving the ∫dω1 integral in 2nd-order polarization
Thank you for your response, the definition of the Fourier transform is The derivation checks out if it is assumed to be separable with respect to t' and t''- Ngineer
- Post #3
- Forum: Advanced Physics Homework Help
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Deriving the ∫dω1 integral in 2nd-order polarization
Homework Statement Starting with the second order polarization in the time domain: (1) I am trying derive the frequency domain form: (2) Multiple sources give essentially the same formula with the same integral, I have obtained the particular ones in here from those lecture notes. My...- Ngineer
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- deriving Integral Polarization
- Replies: 4
- Forum: Advanced Physics Homework Help
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Programs EE grad studies with low GPA, non-degree courses?
Hi jedishrfu, Thanks for your response and the valuable advice, highly appreciated! Unfortunately, I don't think my company offers such benefits, so I have to try on my own.- Ngineer
- Post #3
- Forum: STEM Academic Advising
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Programs EE grad studies with low GPA, non-degree courses?
Hello everyone, Last year, I graduated with an Electrical Engineering degree from a Canadian university with a horrible GPA of 2.62 (reasons why I got this gpa explained here) I have never forgotten about the dream of finally getting into graduate studies, mainly in the field of...- Ngineer
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- Courses Ee Gpa Grad Low gpa Studies
- Replies: 3
- Forum: STEM Academic Advising
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Job Skills Combining full-time job and research
Hello everyone, My dilemma is: - I am a volunteer researcher with a professor in a lab - I received a full-time job offer from a company. I need to keep the research position because it greatly increases my chances of being admitted to grad school, and very closely related to my field of...- Ngineer
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- Job Research
- Replies: 4
- Forum: STEM Career Guidance
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Schools Difference between bursary, scholarship and fellowship
In Canada, a bursary is primarily based on financial need, but for some bursaries, notable academic achievement and/or social contribution is required to be eligible. You don't normally mention bursaries in your CV. A scholarship is primarily based on academic achievement, but can be limited to...- Ngineer
- Post #6
- Forum: STEM Academic Advising