Recent content by Villhelm
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Schools Engineering graduate school after physics undergraduate degree
Thanks for the responses, I've decided against switching subject areas as I've found the glut of documentation seems very OTT, for example, 73 pages of documentation for what was little more than a riveted aluminium plate box that ejects a parachute held back by a spring ... The better part...- Villhelm
- Post #7
- Forum: STEM Academic Advising
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Schools Engineering graduate school after physics undergraduate degree
Hi, are there any pitfalls of switching subject area like this? I'm doing as much as I can to interact with engineers at the moment (such as student projects within the engineering dept. and generally trying to focus my physics towards what I understand to be engineering related as opposed to...- Villhelm
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- Degree Engineering Graduate Graduate school Physics School Undergraduate
- Replies: 6
- Forum: STEM Academic Advising
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Studying What do you do when instructors inflict horrible books on you?
I tend to check out as many related books from the library as I can. I don't usually read them all in-depth, but a skim/light read over as many sources as possible seems to smooth out any rough patches in the set text(s) you may have to principally work from. It's extra work, but you...- Villhelm
- Post #20
- Forum: STEM Academic Advising
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Undergrad What was the principal nuclear reaction of Fermi's nuclear pile
I've known about the basic story of the first nuclear pile since before I can remember, but never found information on what the associated nuclear reaction actually was and was wondering if anyone here knew or could point me in the right direction.- Villhelm
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- Nuclear Nuclear reaction Reaction
- Replies: 2
- Forum: High Energy, Nuclear, Particle Physics
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Which Math Concepts Are Most Useful for a Physics Major?
"What math should I study which would at least help me later on in physics?" I'm not sure there's any math that wouldn't help you, depending on what you want to specialise in (by the sounds of it, theoretical / computational physics). Set theory and other discrete math has been part of my...- Villhelm
- Post #2
- Forum: STEM Academic Advising
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Lithium-Polymer battery fire safety precautions
Thanks for the links pantaz, I'll probably contact some folk over there and see what they say about it.- Villhelm
- Post #5
- Forum: Electrical Engineering
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Lithium-Polymer battery fire safety precautions
Juval, you may want to learn about the subject yourself before you misread a post and lecture someone on neophytic errors they thought they'd made clear they were never going to make. LiPo packs exist, not least within the consumer electronics market, and it is clearly possible for their use to...- Villhelm
- Post #4
- Forum: Electrical Engineering
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Lithium-Polymer battery fire safety precautions
Hello, I'm trying to learn about LiPo battery pack safety and was wondering if anyone could head me in the direction of some good sources of information. In particular I'm trying to learn enough to safely re-build and extend a laptop's 6-cell (3S2P) pack, but hopefully to extend it to a...- Villhelm
- Thread
- Battery Fire Safety
- Replies: 4
- Forum: Electrical Engineering
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Finite quantum well, factor of 2*pi seems necessary but why?
I've been using the value \hbar = 6.58 * 10-16 eV.s Also, for m I was using 9.11 * 10-31kg I did wonder if maybe I'd messed up with \hbar vs h, but with the 2[FONT="Times New Roman"]π inside the square root rather than outside along with \hbar or h made me question that. I'll use the...- Villhelm
- Post #3
- Forum: Advanced Physics Homework Help
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Stationary States: Definition & Free Particle Incident
I'm not that clued up on this myself, but stationary states appear to be similar to solving for standing waves on a string. The assumption is made that the wavefunction y(x,t) = Bsin(kx +/- wt) (B arbitrary, k the wave number, w the angular frequency, x position and t time) and the wave is...- Villhelm
- Post #2
- Forum: Advanced Physics Homework Help
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Finite quantum well, factor of 2*pi seems necessary but why?
Homework Statement Solve for the allowed energy values E of a finite square quantum well of depth U0 = 25eV, width a = 0.5nm that contains an electron of mass m (I'm presuming that m = 9.11*10^-31kg, the question doesn't indicate a specific value to use). I'm defining the interior potential to...- Villhelm
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- Finite Quantum Quantum well
- Replies: 2
- Forum: Advanced Physics Homework Help
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Physics: Instrumentation development - understanding what's involved
It was brought to my attention that career-wise I might find 'instrumentation development' a particularly good choice given my interests. Unfortunately, there wasn't a lot of time to go into what this entailed at the time and I was wondering what it involves from the point of view of physics...- Villhelm
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- Instrumentation Physics
- Replies: 1
- Forum: STEM Academic Advising
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Nuclear fusion and the end of energy problems claim
"Snag with fission plants is that a lot of the decommissioned material will stay 'hot' for geological times." But what are the real-term health impacts of spent nuclear fuel with / without reprocessing as opposed to current non-nuclear power generation waste?- Villhelm
- Post #9
- Forum: Nuclear Engineering
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Nuclear fusion and the end of energy problems claim
Nuclear fusion and the "end of energy problems" claim Hi, Is it me, or does the following claim seem naive? "If we can achieve fusion here on earth, then the world's energy problem will be solved." As I understand it, our energy problems are more to do with greed and waste than...- Villhelm
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- Energy Fusion Nuclear Nuclear fusion
- Replies: 18
- Forum: Nuclear Engineering
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Linear Algebra: Projection onto a subspace
Just a thought, but do you have to provide the solutions in a specific number format (i.e. rounded to a certain number of figures) or maybe as exact fractions?- Villhelm
- Post #2
- Forum: Calculus and Beyond Homework Help