--- Log opened Sun Mar 27 00:00:37 2022
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03:03 < fenn> .title https://www.beyond3d.com/content/articles/15/
03:03 < saxo> Beyond3D - Origin of Quake3's Fast InvSqrt() - Part Two
03:13 < fenn> i didn't realize this sort of thing was possible with SVG files (mouse over the graphs to see data points) https://upload.wikimedia.org/wikipedia/commons/a/ab/Babylonian_method_graphs.svg
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04:33 < L29Ah> would be nicer if it could show the data point at mouse position
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04:43 < fenn> while reading about stardent/ardent computer i randomly ran across a thank you note to dr. erik sanchez, who i recognized from some FIB lab junk i recently acquired from PDX surplus
04:43 < fenn> i looked into his research which is frustratingly no longer online, but i found a couple papers
04:44 < fenn> "Recently, a near-field optical technique has been demonstrated which allows spectroscopic measurements with 20 nm spatial resolution. The method makes use of the strongly enhanced electric field close to a sharp metal tip under laser illumination and relies on the detection of two-photon excited fluorescence."
04:45 < fenn> High-Resolution Near-Field Raman Microscopy
04:46 < fenn> A near-field Raman image is established by raster
04:46 < fenn> scanning the sample and continuously recording the scattered
04:46 < fenn> Raman signal. Sharp silver tips with a radius of
04:46 < fenn> 10–15 nm are produced by electrochemical etching followed
04:46 < fenn> by focused ion beam
04:46 < fenn> milling
04:47 < fenn> i wonder if those tips could be made of cut tungsten wire instead, if it just has to be relatively pointy
04:48 < fenn> raman spectroscopy of single molecules seems pretty useful in general, and the tech involved doesn't seem too crazy
04:48 < fenn> and you also get an image
04:49 < fenn> https://web.archive.org/web/20111230120846/http://web.pdx.edu/~esanchez/Inline_text/Papers/Raman%20nanotube%20imaging.pdf
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05:01 < fenn> .title https://www.sunneyxielab.org/en_research/crs_microscopy/why/
05:02 < saxo> Coherent Raman Imaging
05:24 < fenn> documenting the unexpected coincidence here for posterity's sake, please disregard https://web.archive.org/web/20110714133416/http://ricm.museum.com/collections/ardent/ardent.html
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--- Log closed Mon Mar 28 00:00:38 2022