Recent content by abstracted6
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Undergrad Complete List of 230 Space Groups in CSV Format for Easy Access
Does anyone know of anywhere on the internet where I may find a spreadsheet containing the names of the 230 space groups? In a perfect world this would simply be a csv file containing the schoenflies and hermann-maguin notations; but I can't be too picky. Thanks- abstracted6
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- Groups List Space
- Replies: 1
- Forum: Atomic and Condensed Matter
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Graduate X-ray Photoelectron Spin-orbit Splitting
I have some XPS spectrums that I am trying to fit (my first time doing so), using XPSpeak. I understand that for spin-orbit splitting the FWHM, line shape (i.e.% gaussian/lorentzian) must be equal (more or less), peak area ratios set (i.e. 2:3 for 3d3/2 and 3d5/2), and the peak separation...- abstracted6
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- Spin-orbit Splitting X-ray
- Replies: 2
- Forum: Atomic and Condensed Matter
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Graduate Determine density of states from an XPS spectrum
I've heard any many places that the density of states (DOS) can be determined from an x-ray photoelectron spectroscopy (XPS) spectrum. Perhaps someone more knowledgeable than me can explain how this is done, or can direct me to a good resource? Thanks!- abstracted6
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- Density Density of states Spectrum States Xps
- Replies: 1
- Forum: Atomic and Condensed Matter
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Graduate [Thin-Film Optics] Incident white light to color
I figured it out using the method described in sec 6.1 of http://www.ece.rutgers.edu/~orfanidi/ewa/ch06.pdf along with my own implementation in python.- abstracted6
- Post #9
- Forum: Optics
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Graduate [Thin-Film Optics] Incident white light to color
I found this: http://www.filmetrics.com/reflectance-calculator an online calculator that calculates the reflectance of a multi-layer system. They mention they used the "complex matrix form" of the Fresnel equations. I'm guessing that means the scattering/wave-transfer matrices?- abstracted6
- Post #7
- Forum: Optics
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Graduate [Thin-Film Optics] Incident white light to color
Bad word choice I suppose, the top layer is somewhere in-between transparent and opaque.- abstracted6
- Post #5
- Forum: Optics
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Online Materials Science Resources
I would suggest: http://www.doitpoms.ac.uk/tlplib/index.php- abstracted6
- Post #2
- Forum: Materials and Chemical Engineering
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Graduate [Thin-Film Optics] Incident white light to color
I would imagine that in the end I want to get the reflectance as a function of wavelength which will essentially divulge the color information. To get there I'm guessing I need to first use the fresnel equations to determine transmittance/reflectance for each layer. Then use the resulting...- abstracted6
- Post #3
- Forum: Optics
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Graduate [Thin-Film Optics] Incident white light to color
Hello, as you might have guessed, my question revolves around thin film optics. My intention is: Given a two thin-film system residing on top of a semi-infinite (bulk) layer, how can I estimate the reflecting color (RGB preferably) when illuminated by white light? (Illustrated below). I...- abstracted6
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- Color Light Optics White light
- Replies: 9
- Forum: Optics
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Electron in a potential well (numerical problem)
Homework Statement The width of the potential well of an electron can be assumed to be 2angstrom. Calculate the energy of an electron (in joules and eV) from this information for various values of n. I believe I have messed up my units somewhere in the final calculation, but I have...- abstracted6
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- Electron Potential Potential well
- Replies: 2
- Forum: Advanced Physics Homework Help
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What Caused the Spontaneous Fracture of an Ashtray with Lit Cigarette Buds?
We have an ashtray on an elevated table in our balcony. No one was outside and it suddenly fractured into 4 nearly even pieces on the table. Strangely enough, all the cigarette buds were lit. This is the ashtray we used...- abstracted6
- Thread
- Replies: 1
- Forum: General Engineering
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(Heat Flow) Find the Temperature and Cooling Rate
So I will return to this step: \frac{dT}{dt}=\frac{2h}{\rho C_vr}(T_i-T_f) Which was supposed to be: \frac{dT}{dt}=\frac{2h}{\rho C_vr}(T_f-T) Since the last T now depends on time, I will need to move it over to the left of the equation. \frac{dT}{dt}+\frac{2h}{\rho C_vr}T=\frac{2h}{\rho...- abstracted6
- Post #10
- Forum: Engineering and Comp Sci Homework Help
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(Heat Flow) Find the Temperature and Cooling Rate
I think I got it now, It didn't occur to me to actually write out the thermal energy in the control volume. \frac{dE_T}{dt}=\frac{∂}{∂t}\int\int\int_\Omega \rho C_vTd\Omega \frac{∂}{∂t}\int\int\int_\Omega \rho C_vTd\Omega=(\int\int_A \rho C_vTvdA)_{in}-(\int\int_A \rho C_vTvdA)_{out}+Q+S From...- abstracted6
- Post #6
- Forum: Engineering and Comp Sci Homework Help
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(Heat Flow) Find the Temperature and Cooling Rate
Would you care to elaborate some more? For your convenience, the photo at the bottom is from the main part of the section this problem is from:- abstracted6
- Post #3
- Forum: Engineering and Comp Sci Homework Help
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(Heat Flow) Find the Temperature and Cooling Rate
I'm really not sure, have I gone through the right process here? I didn't actually finish the calculation, I'm just curious about the process.- abstracted6
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- Cooling Flow Heat flow Rate Temperature
- Replies: 10
- Forum: Engineering and Comp Sci Homework Help