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| bio | website | |
|---|---|---|
| location | Germany | |
| age | 28 | |
| visits | member for | 8 months |
| seen | 1 hour ago | |
| stats | profile views | 108 |
Young optics engineer. Industrial Sector: Optics development for safety systems.
2010 Physics diplom degree in Germany, Stuttgart. J. Wrachtrup and F. Jelezko. 3rd physics institute and research center SCOPE.
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Why doesn't light kill me? +1 for the equilibirum of incoming and outgoing energy related to different phenomenon. |
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What's the physical significance of using fourier transform for diffraction? @jinawee You are right, that the concept of Fourier transformation requieres a university math level. However the idea that this transformation allows easier understanding of periodic events. Such as in acoustics, where a note C shows a peak at $440\,$Hz in fourier/frequency spectrum. |
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Optics alignment of scanning microscope I do not know an everyday-life light source to be used as a point source in this case. Flourescent beads (googling will give microspheres for under 300 dollars), Quantum dots, quantum wells, NV centers in diamond... whichever goes with your excitation wavelength. |
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Optics alignment of scanning microscope Please flip your beamsplitter in your image. Then your detection path (green) is able to end on your CCD camera. |
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2d |
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Measurement uncertainty of the quantity, that is function of two others quantities +1 for both methods: Your relative error addition is corect if you multiply a factor of three to the radius term. It's from integration constant of $r^{-3}$ :) Brilliant error calculus. |
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Optics alignment of scanning microscope Your source seems to be a $\approx 30\,mW$ emitter which is attenuated by the pinhole and following optical components. Which components are well aligned? Is the question for vertical alignment the M1-M2 optical path in your picture? |
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Apr 29 |
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Selectively visible laser beam with a controllable means @gwentech Are you thinking of cigarette smoke? Smoking kills ;) |
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Apr 25 |
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How long a straw could Superman use? Welcome to physics SE! Physics lives through discussion and coherent reason. -1 At least mention a physical law (Newton's $F=m\cdot a$). This height boost already is mentioned as intertia in OP's question. |
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Apr 19 |
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Convert a 200mm linear stroke into 90 degrees motion Welcome to Physics SE! A scetch would help to visualize this practical problem. May the wire be twisted during this process? |
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Apr 17 |
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Deriving the change in the Helmholtz free energy in the context of the free energy perturbation method Welcome to PhysicsSE! To fix your beautiful TeX I removed '\left{' delimiters in first statement. There were two left/right pairs. In the next math block, I just removed the blank lines and changed '\begin{align}' to '\begin{align*}'. However the second expression still is not aligned correcly by me. |
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Apr 17 |
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Why Silver atoms were used in Stern-Gerlach experiment? Wecome to physics SE! Part 1: silver has one valence electron in it's '''5s''' shell. |
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Apr 10 |
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How hot is the water in the pot? I'm curious about the downvote. @Taro Please adjust the title of the question to your updated bounty question. I'd recommand removing the section about thermodynamics. |
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Apr 10 |
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Maximum delay for effective active noise cancelling? +1 It's an interesting physical effect @w4rumy You know that the delay depends on the surroundings and the sound source. You can't work out the reason for believing there is an actual delay? Is this reason for the delay also part of the question? Ah ... welcome to Physics SE! So be more specific about thought of the effect instead software delay for effect creation :) |
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Apr 9 |
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Is a holographic recorder able to capture a large full color picture? @gwentech Cost just seems to define an upper limit for building this device in industry. I see your question on topic. If you think so, please edit your question to remove the US dollar. |
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Apr 9 |
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How hot is the water in the pot? @Christoph Feel free to edit your nice fit values and fudge factors to underline my hyperbolic tangent fit $T_2(t)$. This discussion is more fun than my complex industry project! |
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Apr 7 |
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How hot is the water in the pot? @Taro Reasons for not $100\,$°C in reality could be cooling effects of pot rims (they could be cooler than directly on bottom of pot). The pressure dependance should be neglectable unless you use a vapor pressure cooker. |
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Apr 7 |
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How hot is the water in the pot? @Taro I'd call it empiric intuition. My alternative fit $T_2(t)$ is not based on physical laws. Just the fact of a constant temperature of water before and at end of cooking reminded me of a hyperbolic tangent. Though your Newtons cooling law favors the fit with $T_1(t)$. Comparing the quality of fits gives a better objective point of view. Your fit in your answer (+1) looks reasonable, but there could be an additional effect at beginning heating the steel pot. Heating of cold steel pot? |
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Apr 5 |
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How hot is the water in the pot? @Chris and Taro I finished posting my hint on gnuplot a bit too late. Initially I thought fitting was a second problem to the choice of fit function. Thanks for the down to daily cooking question. |
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Apr 4 |
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What is wrong with these ways of determining the mean occupation number? +1 concise question and nice argumentation beginning from basics |
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Mar 24 |
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Time-travel and random events -1 against FAQ: Too many questions and a popular science fiction topic. |
