--- Log opened Sat Apr 30 00:00:01 2016
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02:57 < veek>  IWRC Wire Rope (Dia - 14mm, Size - 6x36mm) what's 6x36
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04:20 < fenn> "The intense Sci-Hub activity in East Lansing reveals yet another motivation for using the site. Most of the downloads seem to be the work of a few or even just one person running a “scraping” program over the December 2015 holidays, downloading papers at superhuman speeds. ...  The papers are all from chemistry journals"
04:21 < fenn> i'll refrain from naming names :)
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04:24 < kanzure> "hurr how do i torrent"
04:25 < fenn> iirc the torrents don't work
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04:28 < kanzure> they are super low bandwidth and i think their seeders are blocking ec2
04:43 < fenn> i think it's just difficult to seed that many files at once
04:43 < fenn> you need special torrent seeding software
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04:52 < kanzure> mornings should not exist this early
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04:59 < cluckj> wuss
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05:18 < kanzure> cluckj: but it's a hackatho... it doesn't deserve wakefulness. it deserves destruction.
05:20 < cluckj> oh
05:45 < JayDugger> Good morning.
05:45 < JayDugger> Oh magic conch--coffee three hours before bedtime or not?
05:49 < JayDugger> Thanks, all. Absolutely no help.
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06:09 < fenn> i don't know what magic conch coffee is
06:09 < fenn> sounds dangerous
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06:55 < chris_99> Out of interest, do any laser cutters, say 40W+ use a diode?
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06:57 < xentrac_> I don't think there exist laser diodes of more than a watt or two
06:58 < fenn> there are laser diode arrays of many kilowatts
06:58 < chris_99> xentrac_, the military have laser diode cannons though
06:58 < fenn> military lasers are more akin to rocket engines
06:58 < chris_99> heh, how so?
06:59 < fenn> https://en.wikipedia.org/wiki/Chemical_oxygen_iodine_laser
06:59 < fenn> "The laser is fed with gaseous chlorine, molecular iodine, and an aqueous mixture of hydrogen peroxide and potassium hydroxide. The aqueous peroxide solution undergoes chemical reaction with chlorine, producing heat, potassium chloride, and oxygen in excited state"
06:59 < chris_99> i could of sworn i saw a non-gas based one
07:00 < fenn> probably you did
07:02 < fenn> diodes can also be used to pump a secondary lasing medium
07:02 < chris_99> ahh
07:02  * xentrac_ pumps fenn's secondary lasing medium
07:03 < xentrac_> I was dreaming about sodium silicate this morning.  can you 3-d print with it by mixing it with acid to precipitate silica gel?
07:04 < xentrac_> and in particular can you get the gel to be optically transparent and controllably doped?
07:04 < xentrac_> because in a way that sounds a lot easier than doping glass
07:05 < fenn> i think it is translucent rather than transparent
07:05 < xentrac_> the little beads of silica gel that come in the desiccant packets look pretty transparent, but they're only a few mm across
07:06 < fenn> hmm this looks pretty transparent too http://img1.exportersindia.com/product_images/bc-full/dir_17/485677/sodium-silicate-glass-122609.jpg
07:06 < xentrac_> so they could have attenuation of up to, say, 1/(20 mm) and still look the same
07:07 < fenn> maybe it is just a matter of purity
07:07 < xentrac_> so a thing to keep in mind here is that silica gel and sodium silicate are two different chemicals
07:07 < fenn> a lot of the google images are very blue-green colored
07:07 < xentrac_> it's common to add cobalt salts to silica gel as a moisture indicator
07:11 < xentrac_> it would be pretty nice to be able to 3-D print an optical computer but I'm not all that optimistic
07:12 < xentrac_> there was some result from I think Bell Labs back in the 1990s that you can do a universal computer with a single NAND gate and an arbitrarily large collection of fanout and delay-line elements
07:12 < xentrac_> or something liket hat
07:12 < chris_99> you can create all gates from a NAND iirc
07:13 < xentrac_> well, from an arbitrary collection of NANDs, chris_99, but that's a different problem!
07:13 < chris_99> true
07:13 < xentrac_> there are a variety of strong nonlinearities in laser behavior that you could exploit to get a logic gate
07:13 < chris_99> oh you said a single nand computer?!
07:13 < chris_99> be intrigued to know more about that
07:14 < xentrac_> yeah, I don't remember if it got actually published
07:15 < chris_99> Just found this - https://en.wikipedia.org/wiki/Free-electron_laser didn't even know you could get lasers that work in the RF spectrum
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07:37 < gnusha> https://secure.diyhpl.us/cgit/diyhpluswiki/commit/?id=b4aeefc6 Bryan Bishop: hackathon intro >> http://diyhpl.us/diyhpluswiki/transcripts/coindesk-consensus-2016/hackathon-intro/
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07:48 < JayDugger> fenn, you are right about magic conch's advice on coffee. You are out of date about military lasers, at least on the basis of what shows up in the trade press.
07:49 < JayDugger> chris_99, https://en.wikipedia.org/wiki/Maser
07:50 < JayDugger> See also https://en.wikipedia.org/wiki/Astrophysical_maser
07:50 < chris_99> i've heard the term Maser, but i only thought they where astronomical things cool
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17:54 < kanzure> http://hackaday.com/2016/04/28/the-makerbot-obituary/
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19:18 < kanzure> fenn: the torrents are 100 GB each with 100 files each 1 GB. so i think torrents can handle that...
19:19 < kanzure> (100 files per torrent, each file is 1 GB)
19:22 -!- Filosofem is now known as Jawmare
19:22 < Jawmare> say hello to your Chinese overlord
19:24 < kanzure> i'm just visitng new york, io'm not going to beijing or something...
19:27 < Jawmare> I am commenting on MakerBot
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23:22 < JayDugger> Good morning, everyone.
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--- Log closed Sun May 01 00:00:02 2016