| --- Log opened Wed Feb 07 00:00:53 2018 |
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| 02:20 | < Mahal> | http://www.commitstrip.com/en/2018/02/05/it-project-estimates/ |
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| 06:42 | < Jessikat> | It's actually kind of impressive to get a 2x speed up on a data structure definition I guess |
| 06:42 | < Jessikat> | I should be proud of that |
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| 09:22 | < Mahal> | Pre-emptively FML https://www.theregister.co.uk/2018/02/07/beware_the_coming_chrome_certificate_apocalypse/ |
| 09:23 | <&McMartin> | ... other headlines on that link: "MY GOD, IT'S FULL OF CARS" |
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| 09:31 | <@TheWatcher> | Mahal: yeah, I've been eyeing that one and switching everything I can over to LetsEncrypt as and when I can |
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| 12:46 | <&[R]> | OMG |
| 12:46 | <&[R]> | They issued a cert for google.com |
| 12:46 | <&[R]> | Yeah... I can see that biting them in the ass so hard |
| 12:47 | <&[R]> | What I don't get is why these fuck-ups keep happening |
| 12:48 | <&[R]> | They've made the news repeatedly with Firefox/Chrome revoking their trust, which is pretty much a death-knell |
| 12:48 | <&[R]> | Are the bussiness owners truely that short-sighted? |
| 12:48 | <@Tamber> | The love of money trumping the care of doing their job properly. |
| 13:33 | | * TheWatcher seethes with hatred for java |
| 13:35 | <&[R]> | Oracle at least seems to be slowly unfucking the language |
| 13:36 | <@TheWatcher> | Okay, let me modify that |
| 13:36 | | * TheWatcher seethes with hatred for java, and places that use Scientific Linux |
| 13:36 | <&[R]> | Your addendum doesn't make all that much sense |
| 13:37 | <@TheWatcher> | I run a gitlab server for work. Repo access is, as with github, via ssh or https. |
| 13:38 | <@TheWatcher> | https obviously requires a cert. |
| 13:39 | <@TheWatcher> | Cert options available at present: either I can go through the process with work to obtain a cert, which is ultimately a QuoVadis cert, or I can use LetsEncrypt. |
| 13:41 | <@TheWatcher> | Students need to use eclipse as part of certain courses, and use the git plugin for that, including clones, pulls, and pushes to projects in gitlab. |
| 13:42 | <@TheWatcher> | Now the fun part! The java + eclipse setup they have on the lab machines is a variety of scientific linux, and has a wonderful set of problems such as: interacting with gitlab over ssh won't work, because the java installs won't create ephemeral keys over 1024 bits |
| 13:43 | <@TheWatcher> | interacting with gitlab over https with the letsencrypt cert fails, because java 7 doesn't recognise the ca |
| 13:43 | <@TheWatcher> | have to set http.sslVerify = false to make it work |
| 13:43 | <@Tamber> | >.< |
| 13:43 | <@TheWatcher> | Just found out, it won't accept the QuoVadis cert either! |
| 13:44 | <&[R]> | Fun |
| 13:44 | <&[R]> | And you can't get a push done to have Java use a more up-to-date trust list? |
| 14:08 | < Jessikat> | rawr |
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| 14:26 | | * Vorntastic rawrs jessikat |
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| 15:50 | < Kizor> | Huh. Googling "her piano in half" finds no results with quotes, but googling "headbutted her piano in half" does. |
| 15:50 | < Kizor> | Any idea why that happens? |
| 15:53 | <&ToxicFrog> | No idea, but I'm going to file a bug. |
| 15:56 | <&ToxicFrog> | Bug filed. |
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| 16:51 | <@Attilla> | probably something algorithmic |
| 16:51 | <@Attilla> | the algorithms used nowadays are so opaque it's insane |
| 16:52 | <@gnolam> | Dear diary: today I bought a null modem. |
| 16:52 | <@Attilla> | did you get a refund |
| 16:52 | <@gnolam> | This is something I had basically forgotten *existed*. |
| 16:53 | <@gnolam> | Well. I was hired for my "able to work magic with ridiculolegacy systems" skills, so I guess they're getting their money's worth. |
| 16:53 | <@Attilla> | do you daisy chain weird cables together |
| 16:54 | <@Attilla> | and... make drivers so it'll work? |
| 16:54 | <@gnolam> | Nah. Just our standard blue cables at either end and then the null modem in between. |
| 16:55 | <@gnolam> | (Blue cable = some no-name USB<->RS232 adapter that we have found always works. Otherwise, USB<->RS232 adapters are surprisingly a crapshoot - might work, might give you impossible-to-debug problems.) |
| 16:57 | <@abudhabi> | Is there some python shorthand to say "remove first N characters from the string's beginning and end"? |
| 16:58 | <@Attilla> | huh we could do with those blue cables at work |
| 16:58 | <@gnolam> | the_string[start:-remove_this_many_from_the_end] |
| 16:58 | <@gnolam> | @ abudhabi |
| 16:58 | <@Attilla> | we have some wacky old equipment |
| 16:58 | <@abudhabi> | gnolam: Hmmm. Thanks! |
| 16:58 | <@gnolam> | Slicing is your friend. |
| 16:58 | <@gnolam> | [start:end:step] |
| 16:59 | <@gnolam> | Where it is [start:end[ (including start but not including end) |
| 16:59 | <@gnolam> | And negative indices are interpreted to mean "from the end". |
| 16:59 | <@gnolam> | Attilla: oh? What kind? |
| 17:01 | <@Attilla> | well there's a 'alcolyzer' + density meter set (an alcolyzer is a NIR spectrometer specialised for determining ABV) which currently can only output data to a really old printer |
| 17:01 | <@Attilla> | and we want to adapt it to sending it to something more modern (like the computers for instance), a guy came in to do that but he had a hard time |
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| 17:09 | <@gnolam> | Sounds like it should be blackboxable. :) |
| 17:09 | <@gnolam> | Also: spectro powers unite! |
| 17:11 | <@gnolam> | Out of curiosity, you wouldn't happen to know the spectral range of it? |
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| 17:47 | <@Attilla> | hmm assuming their procedure hasn't changed substantial on this part of it (it seems the more modern alcolyzers have a lot more capability) they measure at around 1200nm primarily |
| 17:49 | <@Attilla> | there's a particular absorbance peak there which peaks above the absorbance signal of water |
| 17:50 | <@gnolam> | Ah, thanks. |
| 17:50 | <@gnolam> | That's a tad longer than what I'm working with. :) |
| 17:52 | <@Attilla> | There's also one near 900nm but I think the other much bigger peak for water adjacent to it would be a source of interference, while the near 1200 peak has the signal from water plateau https://usercontent.irccloud-cdn.com/file/kQLcFQSr/image.png |
| 17:58 | <@Attilla> | what spectro do you do? :V |
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| 22:03 | <@gnolam> | Attilla: visible light. By which I *actually* mean "the actual visible spectrum" + "a bit of near infrared" + "quite a bit of the UV spectrum, because even if you don't perceive it directly, it might fluoresce". |
| 22:06 | <@gnolam> | But we have a way harder cutoff for IR than we have for UV. :) |
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| 22:24 | <@Attilla> | We also have a more general spectrophotometer but it's a lot more modern |
| 22:25 | <@Attilla> | We tend to use 520nm or 430nm |
| 22:25 | <@Attilla> | For colour analysis |
| 22:27 | <@gnolam> | That's... much shorter than I thought it would be. |
| 22:28 | <@gnolam> | I mean, that's way up there in the blue/violet. |
| 22:29 | <@Reiv> | What're you shining at? |
| 22:32 | <@gnolam> | (I assume you're doing transmission spectrometry, BTW) |
| 22:35 | <@gnolam> | Back to the NIR thing: for coloristics, unless you're doing military work, you don't usually care about anything > 800 nm or so. |
| 22:37 | <@gnolam> | So most software and even quite a bit of hardware has an 800 nm cutoff. |
| 22:40 | <&McMartin> | If you can answer without compromising national security, what aspects of color require military-grade precision? |
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| 22:49 | <@gnolam> | Short and somewhat flippant answer: all of them. Because they tend to be really tightly specified. |
| 22:49 | <@gnolam> | To the point where, like, "failure should be signalled with a red warning light" could be an actual specification, where "red light" might be specified as "x% of the light energy should be emitted between y and z nanometers". |
| 22:50 | <@gnolam> | There are companies with tens-of-thousands-of-dollars QC setups *just* checking that their LEDs are emitting light within spec. Not kidding. |
| 22:51 | <&McMartin> | That's what checking a spec like that means. |
| 22:51 | <@gnolam> | For actual coloristics: usually you don't care about the infrared portion. Because it doesn't influence human vision. UV does, because of fluorescence. But IR is just "eh, let it go". |
| 22:51 | <&McMartin> | I would imagine things like reflective properties of materials would be specified pretty strongly outside of the military too. |
| 22:52 | <@gnolam> | But things change when you have night vision goggles and the like. |
| 22:52 | <&McMartin> | e.g. your Safety Orange needs to not only be safety orange but visible under thus-and-so conditions. |
| 22:53 | <@gnolam> | Suddenly, you're not just concerned with your camo patterns or whatnot in visible light, you also want them to be within spec if someone is looking at them through an image amplifier. |
| 22:54 | <@gnolam> | Where even the good ones are using quite a bit of the infrared spectrum. |
| 22:56 | <@gnolam> | So you have to look at a much broader spectrum. |
| 22:57 | <@gnolam> | Because something might look fine to human vision but glow like a flare in infrared. |
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| 23:11 | <@Tamber> | Which is how you end up with lovely stuff like IRR paint, which is/was pretty nasty stuff~ |
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| --- Log closed Thu Feb 08 00:00:54 2018 |