--- Log opened Mon Nov 02 00:00:04 2020
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01:01 < archels> .title https://zenodo.org
01:01 < saxo> Zenodo - Research. Shared.
01:02 < archels> I'm getting "Welcome to nginx!"
01:02 < archels> weird.
01:02 < archels> www. works
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10:57 < archels> https://i.imgur.com/1xeH8OC.mp4
10:58 < archels> (you can hook up Leap Motion to an Arduino?)
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18:09 < lsneff> Welp, just bought an oscilloscope.
18:13 < nmz787> lsneff: nice!
18:13 < nmz787> I hope you got 4 channels
18:15 < lsneff> Yep, had to spend quite a bit more to get 4
18:16 < nmz787> I've got a rigol ds1074z (I think that's it)
18:16 < nmz787> it's got the signal generator in it too
18:18 < lsneff> Oh, a builtin function generator would be cool
18:19 < nmz787> yeah it's been nice to have, gotten my money's worth
18:19 < nmz787> also this series is hackable for a bunch of nice features
18:19 < lsneff> I got a siglent sds1104x-e, mostly because it has good reviews
18:21 < lsneff> But if there's a better one in that price range, I can return it
18:22 < nmz787> haven't really researched scopes in like 6 years or something
18:24 < lsneff> Yeah, I'm sure it'll be fine
18:24 < lsneff> I'm trying to stock up
18:24 < lsneff> I think a microscope is next
18:25 < nmz787> hehe, I've got a few of those
18:25 < nmz787> 3 optical, one electron, one ion
18:26 < lsneff> Well, an optical first, and then the afm I'm working on :P
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19:27 < fltrz> I got a used TDS 5104, paid about 1600 euros in total
19:28 < fltrz> I had an excellent optical microscope but gave it away to a sister
19:28 < fltrz> had sub micron resolution, was a mirror microscope, Oude Delft OD400
19:29 < fltrz> I sometimes think about building myself a second one from scratch
19:29 < fltrz> polishing a mirror from metal is quite feasible
19:31 < fltrz> https://wp.optics.arizona.edu/falco/art-optics/historical-questions/making-a-concave-mirror/
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22:53 < fenn> "using only grinding paste and pieces of aluminum" both easily available in the 15th century by hopping into your wagon and sailing down to the local time traveler's mart https://en.wikipedia.org/wiki/File:Hendrik_Gerritsz._Pot_001.jpg
23:07 < L29Ah> > I then decided to make a second mirror that was only 2.5 cm in diameter, corresponding to the size we calculated Lorenzo Lotto used. I decided to use brass rather than aluminum to see how much color it would impart to the projected image.
23:08 < fenn> when lapping it's best to use a softer material for the lap, otherwise abrasive particles will embed themselves in the workpiece. why do the experiment with materials you know didn't exist at the time?
23:10 < fenn> anyway, the most interesting part of this is finding that art historians don't accept his theory that artists of the time used optics to help them trace scenes
23:11 < fenn> even though the artists left numerous references in the images themselves
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--- Log closed Tue Nov 03 00:00:05 2020