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"when small particle sizes are involved and a burning fuel is in contact with the melting solids, excessive loss of material by entrainment in the combustion fumes occurs because of excessive gas velocities" (http://www.google.com/patents/US2540593 )


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Comparison of fabrication techniques for hollow retroreflectors describes, in great detail, the two obvious methods: The use of a precision solid prism corner cube as a mandrel to hold the glass plates prior to gluing of the edges. An adjustable set of precision mirror mounts, designed to hold the three plates In both cases interferometric techniques ...


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Take a piece of string (I just use cheap yard twine) and soak it im rubbing alcohol. Then wrap the soaked string around the glass tube along/in the score mark you made. Then light the alcohol soaked string on fire. let it burn for a few seconds then dip the gloss tube in cold water and it will break along you score line.. I personally use this method in ...


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You could use an electro-optic modulator. These don't need kV supplies, can have very fast rise/fall times, and can be fully programmable by using a digital delay generator (these can also be triggered optically for extremely good accuracy/preventing timing drift between the delay generator and whatever source you're using). You usually need the following: ...


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With the exception of a few materials (e.g. silica) everything forms crystals in the solid phase, but the crystals can be very small and randomly arranged. We call such material polycrystalline. The individual crystallites can be very small, but luckily we only need a very small crystal as a seed. I don't know exactly how the seeds for growing silicon ...


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If your curve-fitting program allows it, instead of fitting $y=a+bt+ct^2+dt^3$ you could try fitting $y=d(t-a)(t-b)(t-c)$. The output parameters $a$, $b$, $c$ will then be the required roots and the errors (or rather variances and/or co-variances) will be included in the statistics.


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Judging by your Q1, I think you are asking about error bars for data points in graphs, especially in relation to plotting a line or curve of best fit. Error bars are not often calculated statistically for this purpose. To do so, a sample of N measurements must be made for each chosen value of the independent variable x and a mean and SD calculated. The ...



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