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10:03 AM
Alex Warren on September 29, 2015
Is your current job awesome? Or could you be doing better?
 
 
4 hours later…
2:02 PM
House CSST (Committee on Science, Space, & Technology) Hearing: "Astrobiology and the Search for Life Beyond Earth in the Next Decade" is now webcast live. More info here
should start any minute now
 
2:41 PM
there's a loaded question of you - where is discovery of life most likely, asks the senator
 
2:57 PM
-@TildalWave hey, i split up the elements of one of your ads into layers to work on it. Would it be useful to you?
 
posted on September 29, 2015

Dark narrow streaks, called "recurring slope lineae," emanate from the walls of Garni Crater on Mars, in this view constructed from observations by the High Resolution Imaging Science Experiment (HiRISE) camera on NASA's Mars Reconnaissance Orbiter.

 
3:13 PM
@kimholder did someone answer Not in this room!? :)))
@kimholder well I already have the elements I used from before and I worked with layers already
 
ok. i thought you might not still have those files.
 
Basically, if I prepare for you our "standard" banner for print, I'd assume black tees right?
so black = non-printable
 
no, you just have to buy the right kind of transfer paper
 
But wouldn't that make the whole paper a print that's on the tee later? I thought that makes the material kinda different then so if there's parts that don't need print on it, wouldn't that be better?
 
yeah, if you have a big rectangle of rubbery surface that isn't nice. The thing would be to delete as much area as possible that is already black before printing on the transfers
 
3:18 PM
@kimholder oh hmmm that's A4, there aren't any bigger?
 
not that i could find. but as you said before, things could be organized into chunks
at any rate, it is already on its way :P
 
@kimholder that's what I thought ... and I'd make such layout that fits the print paper best, and you then cut some parts that go on the tee somewhere else
@kimholder how many sheets are there in the pack?
I see now 10 sheets
 
yeah, i get to Columbia Saturday night, i'll have 2 free days before the conference, i already imagine it being spent listening to relevant podcasts while i iron stuff
@TildalWave no, in the bottom corner it says 30 sheets
 
hehehe
 
if i get 10 sheets i'm going to be pissed
 
3:23 PM
@kimholder lool OK so I can probably work with 3 per tee?
or let's say 2
 
let's say 2, yeah - i do think i'll take one per shirt to put on the moonwards logo
on the back, keeping it separate
 
Any idea what resolution is still reasonable? I'd think it isn't much in real life and I probably better see how it renders in fewer colors too?
you know, so it doesn't look awful with the first wash
 
i'm going to run a couple of tests here before i go, on a couple of my black tees
whatever the resolution is, the plotter prints the way it prints. i'm more concerned about what ink level is best - fast, normal, or high-quality
and how to handle the ironing - how hot, how long, pressure, using a paper on top... there are youtube videos, of course
 
it'll probably say on the box
 
yeah, but often instructions are a little vague
 
3:31 PM
I remember something about baking paper being used on top of it, but I'm not sure it was such print
I'll just assume there will be some smearing and subtle gradients won't work well
i.e. take what I have then stylize for lower pixel and color resolution
 
i don't get your concern about resolution. the droplets sprayed out by the plotter are pretty small. print i can only read with a magnifying glass is nice and crisp. gradients aren't a good idea, though, because a certain amount of banding occurs in large areas of color - but that goes equally for large areas of flat color
we are waiting on delivery of a continuous ink delivery system and a half liter of each color. that too needs to be tested, but i don't think it will be an issue.
i think photos and textures are the best options
 
@kimholder I mean that by the time you transfer that on a tee it won't really keep the resolution that you printed it with. Basically, I don't think I should expect high fidelity to the source after the transfer.
I.e. some subtle detail will be lost and it also might not look good if I use too much of those after a couple of washes
 
low contrast content, yes, maybe so. i'm going to look for a video on the topic
 
3:57 PM
man, thank god for 1.5 speed on youtube
 
sadly, that wasn't available during the live webcast of the CSST hearing
 
4:17 PM
ok so dry iron, really hot, parchment paper on top, cut around the transfer right next to where you want it to print (so better to leave a black border on everything to be cut out so it matches shirt color)
press down hard and keep ironing for a full minute or so
they seem to come out nice and clean. haven't found anything that comments on washing
yeah, turn it inside out, wash warm with a spin cycle, soaking is bad, iron inside out. freshen up the transfer by putting parchment paper over it and lightly ironing. not a big deal. i bet they last okay if treated right.
(maybe i'll even put a sticker with washing instructions on the shirts)
 
4:43 PM
@TildalWave from what i can see in a few videos, resolution isn't a problem. they come out crisp.
 
5:17 PM
@kimholder I'm gonna make borders with some transit effect from transparent to black where that will be possible, so it doesn't look too bad even when tee color washes out a bit
 
 
1 hour later…
6:25 PM
@kimholder Have you ever come across some documents discussing solar wind collectors as means of producing hydrogen and other missing volatiles on the Moon? I'm trying to find anything on this and I didn't manage to, except several documents discussing Genesis solar wind collectors
 
i have a vague idea i've run across it before, but didn't pursue it because the amounts you'd get seemed so small
 
I'm thinking something along the lines of Bussard ramscoops, i.e. electrostatic / magnetic confinement ought to work
 
ah - i sure haven't come across something like that
did you try searching within lpi?
 
well sure fluence rate would be small-ish but it would accumulate over time and assuming some reasonable size collector
@kimholder not yet, I'll check it now
this docu gives estimates for H fluence hou.usra.edu/meetings/lpsc2015/pdf/2577.pdf
so for bulk solar wind ~ 1.44 - 2.06 x 10^16 H/cm^2
that's not too bad if you can embed it into something without using much power
cold plasma confinement might work here to reduce diffusion
 
i'd need it explained how that adds up to an amount over some time period
 
6:39 PM
yeah working on it, it's surprisingly hard to find reliable numbers... then again, there wouldn't be any Genesis mission if we already knew all that
 
i've sort of gone with asteroid mining. it seems more plausible to me by the time it would be relevant. but i've given it very little thought, not at that stage yet.
and of course the poles. but if you could just put a collector in some convenient place, that does sound appealing
won't get you nitrogen or carbon though
 
well solar wind is there for free and it might be trivially simple and cheap to come up with some collection and processing method, like simply laying out large salt fields
@kimholder why not?
 
aren't atoms like that rare in solar wind?
 
well not rare enough not to cause darkening of optics over the years
and I don't actually think that carbon is a problem
find CC impact site, should be plenty of it laying around
 
really? i haven't found anything saying there would be significant residue locally after a strike
i asked about it a long time ago. didn't get much attention really.
where is that now...
 
6:46 PM
depends on the impact energy and material it hit
there's some good simulations on LPI
 
yes, you linked one a while ago and i still haven't felt comfortable enough with things coming together to sit down and properly go over it :)
the link is sitting on my toolbar
 
heh yeah it's the one I was looking for now and can't find it
 
and I think they did some new simulations with Sandia labs ... I mean I know they did some new simulations, I'm just not sure which supercomputer they used... and I doubt it's published yet, IIRC it was briefly mentioned during the planetary defense workshop this summer in Italy
@kimholder that's the one :)
 
HopDavid talked about this somewhere....
it wasn't really in the question i thought. gee - that would be a good question.... :]
 
6:51 PM
look online for "butterfly crater"
I think Emily Lakdawalla has something on it
two L :)
OK, I know, that's on Mars, but still
 
4
A: How much meteorite material hits the moon and could it be useful?

HopDavidDennis Wingo and I had an argument over this. Wingo argues asteroid impacts have left rich ore deposits on the moon. My response (which he did not like) was citing Barringer's disastrous effort to mine Barringer Crater in Arizona. Barringer was correct that the impactor was metallic. But the impa...

there
 
Yeah he focuses there on profitable mining and delivery to Earth ... I'm thinking more ISRU here
it's then profitable if it's cheaper to mine there than to import from Earth
and it might not be that bad, I think it would look a lot more like hunting for meteorites in Antarctica ... you simply drive around and collect rock that is darker than the rest of them
 
yeah, but there is a link in there that might be useful
i still have to go back and follow up on my black stuff question
the black stuff deserves to be addressed separately, i think
 
I'm not sure I'm making the connection
 
about the black stuff?
or the magnetic anomalies?
 
7:02 PM
tho it does make me wonder why would it be so difficult to establish if it's impact-induced magnetism, shouldn't all that impact melt degauss as it heats up leaving a distinct magnetic signature?
 
maybe we just don't have good enough data yet. like so many other things.
 
I mean, it should have distinct magnetic properties over crustal magnetism
 
this is probably a better source if you can get it
 
hmm yeah doesn't seem to want to open it
@kimholder between those two, or rather how magnetic anomalies relate to carbon deposits
 
oh, it was just about deposits in general. i presume first you have to establish that everything doesn't just vaporize.
once you know that, then whatever was in the impactor should be around
 
7:06 PM
aren't then mascons better proof?
 
only if they are definitely from impactors
 
Is there any doubt? I mean, I have some really pretty pictures that agree with this notion, how can you disagree with that? :))
 
yeah, but maybe they punched a hole and then how the mantle reacted caused those
 
I think the connection is rather clear here
 
maybe the actual stuff that hit pretty much vaporized or got stuck deep in the mantle
 
7:12 PM
well compacting alone doesn't explain it because that doesn't change free-air (or Bouguer, whichever) gravity
 
but maybe that was accompanied by upwelling of denser mantle material in the area
 
there would be some of that but I doubt it would be even close to the mass that's thrown out and around it, yet the rims have smaller surface gravity than the melts, despite being much taller
 
hm
whoa, what happened to the review queue?
 
@TildalWave Wow that's an oddly pretty picture.
 
7:31 PM
told you I have pretty pictures didn't I? :P
 
 
3 hours later…
10:04 PM
30
A: Can we raise the bar for reputation for late answers to enter the review queue?

Jon EricsonQueue growth Review queues lose effectiveness if posts aren't regularly (and accurately) cleared. A queue such as close votes on Stack Overflow that never seems to get to 0 fails to provide time-sensitive feedback that aids learning. So if we raise the bar for late answers which increases the nu...

Looks like they're been implementing things again. Don't they know we hate change??
 
but they weren't late answers, they were from many months ago
 
And darn be @JonEricson and his good ideas!! LOL
@kimholder they were late answers when they were posted, and never reviewed as such
 
oh. well i only looked at a couple, which seemed okay, so i ignored the rest as a glitch
and i only glanced at them really, because head said 'glitch' :P
 
it's one of those "now that we changed the law it is also valid for the past" type of things :)
it was still fine here, they still have 6.1k of late answers to review on Super User :)
 
heheheh... badges! free badges!
 
10:23 PM
well maybe the bronze or even silver if you're already close but you can only review 20 single review queue items per day so it doesn't get you much closer to gold if you're not already nearly there
 
ah. that i did not know.
20 seems low, if you have the reputation .
 
11:11 PM
well we wanna avoid repetitive strain injuries (and also crap reviews which tend to be related to amount of work needed to go through the queue)
it's rather rare that you'd see 20 items in a single review queue here anyway
there's also that "you again!" factor to consider :D
 
11:30 PM
posted on September 29, 2015 by Chris Bergin

The fifth Chinese launch in September took place at 23:13 UTC on Tuesday (Wednesday morning local time) with a Long March-3B/G2 rocket orbiting another Beidou-3 navigation satellite. The... Related posts: Chinese Long March 3B launches dual Beidou mission Chinese Long March 2D lofts satellite duo Chinese Long March 2C lofts Yaogan Weixing-18 satellite

 

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