How can I make the most of my 3/4 monitor set-up?

This self-post was originally posted to /r/KerbalSpaceProgram. See more things from Dan's Reddit account.

I can span KSP across them, but that doesn’t really help me as much as I’d like. What’d be really useful would be the ability to show the orbital view on one monitor and the staging view on another. Is there any way to achieve such a thing?

Normally when I’m faced with a problem I just add more boosters/struts, but that doesn’t seem to be helping this time.

One of my favourite hosting companies is recruiting using anonymous online interviews, in an effort to combat industry sexism

This link was originally posted to /r/girlsgonewired. See more things from Dan's Reddit account.

So, in May 2015, we made the huge decision to start an anonymous recruitment process. The biggest change compared to tradition recuiting is this – your first two interviews are truly anonymous. We conduct them over instant messaging and run our skills tests remotely too.

You won’t even have to give your real name or a CV in the initial stages. We don’t know anything about you that you don’t choose to present in the interview.

That makes us work hard for explicit goals. We want to know about your:

Most valuable skills
Ability to learn
Ability to work effectively in a team

We make decisions based on those factors. Avoiding the “X factor” of cultural fit, which we’ve seen as an excuse for all kinds of implicit and explicit bias across industries.

We also want to be respectful of your time, your enthusiasm and your interests – we’ll test not just what you know but what you can learn. Our focus is on letting you put your abilities to the fore, without fear that you’ll be judged on irrelevant things. We define the job, we define the skills, and we want to test those without bias.

Our culture comes from you, the best person for the job at the end of the process. Of course we still need to meet you, we want to meet you. But we will start our interviews on the solid foundation of anonymity. Only at the final stages will you be asked to come in for a face-to-face interview.

Is it possible to ‘blow’ a whistle or other wind/brass instrument underwater? How?

This self-post was originally posted to /r/askscience. See more things from Dan's Reddit account.

Wind and brass instruments (which I’ve just learned are collectively ‘aerophones’) work because since characteristic of their shape causes the air that is pushed or drawn through them to vibrate at particular frequencies. They work in air whether you’re down a mine or at the top of a mountain, so there’s clearly some tolerance to pressure variation. I presume, therefore, that you could play them using other gases too (e.g. by connecting a whistle to a pump in a nitrogen atmosphere, for example), albeit presumably with a change in pitch (we have whistles driven by an air/steam mixture on steam locomotives, for example).

But I wonder: can such an instrument be used with other fluids? How about a liquid, like water? Can I pump water through an underwater whistle in order to make a whistle-like noise? What are the physical constraints on doing so (e.g do I need a higher pressure difference in water)?

If it’s not possible, why not? What could be done, hypothetically, to construct an aerophone-style (“hydrophone”?) instrument that would work underwater?

tl;dr: Could I pump water through an underwater whistle to ‘blow’ it? If not, how can I ‘fix’ that?

Guess where I woke up this morning, MegaMasons?

This link was originally posted to /r/MegaMasonsLounge. See more things from Dan's Reddit account.

Dan in hospital

So yeah: that’s not entirely pleasant. A couple of days ago I was diagnosed with what was supposed to be a minor bladder infection and given antibiotics. Then yesterday I became feverish and collapsed. And now I’m in hospital.

But on the upside, they’ve spent all night pumping me full of some kind of intravaenous antibiotic that must be made from like unicorn spunk and leprechaun tears or something because it’s frankly magical: feeling so much better today than yesterday.

Just wanted to say hi. Hi, all!

[x-post /r/MegaMegaMegaLounge] [Graph] Tracking ‘engagement’ across the MegaLounges. Why are some Megas more-active than others? (interpretation in comments)

This link was originally posted to /r/MegaMegaMonitor. See more things from Dan's Reddit account.

Engagement level by MegaLounge

In /u/10_9_‘s recent thread about gilding trends, /u/razerxs made an interesting observation: that the huge ‘drop offs’ in membership of MegaLounges after /r/MegaMegaMegaLounge does not correlate with their expectations, based upon the level of activity in /r/MegaLoungeV. /u/razerxs

observed that e.g. /r/MegaLoungeV is a highly-active sub, which isn’t necessarily what you’d expect if the activity level was based entirely upon the number of people permitted to have access.

I started wondering if there might be a better predictor of engagement levels. I experimented by looking at the ratio of how many people ‘subscribe’ to each MegaLounge to how many people are permitted into there. This isn’t a perfect measure of engagement, of course, but my thinking was that of the people who are invited into a MegaLounge, only some of those will add it to their front page… but that those who add it to their front page are more-likely to actively participate.

The graph shows three things. From the left axis, the blue and red lines show the number of people who are allowed into each MegaLounge and the number of people who are subscribed to each MegaLounge. As you might expect, there’s a gap between the two and the gap narrows in higher lounges, where there are fewer people.

But what I was interested in is whether and where this gap changes proportionally: is the “subscription rate” among eligible people higher in particular lounges, and can this been seen as a predictor of activity levels and engagement rates in each lounge? That’s what the green bars show (against the right-hand axis: note that it doesn’t start at zero). In general, across the MegaLounges up to and including /r/MegaLoungeSol, there does seem to be a slight upward trend: i.e. the higher a lounge you’re in, the more-likely that eligible people are to add that lounge to their front page. Beyond /r/MegaLoungeSol the bars jump around all over the place, probably because of the small number of people ‘up there’, and I suggest that we ignore them: accuracy of this as a predictor would be expected to be better where there were more subscribers: say, up to about /r/MegaLoungeDiamond.

What this would predict would be a “lull” at /r/MegaLoungeVIII. I don’t know if that’s your experience or not. And, interestingly, the ‘subscription ratio’ at /r/MegaLoungeV and /r/MegaLoungeX are also unusually low, bucking the overall trend. What does this mean? I don’t know. But if /r/MegaLoungeV really is to be considered one of the more “active” MegaLounges, then I think that we can safely say that my hypothesis – that we might be able to predict activity hotspots by looking at the subscription rate – is not backed up by the data.

Still: interesting stuff.

Welcome to the planets, new astronauts!

This self-post was originally posted to /r/MegaLoungeNeptune. See more things from Dan's Reddit account.

I just wanted to give a wave to our three new astronauts, freshly arrived here in the planets just over the course of this last week. They are:

Happy space exploration!