Search found 368 matches

by Mr_Rose
Mon Jan 13, 2014 8:20 pm UTC
Forum: Individual XKCD Comic Threads
Topic: 1316: "Inexplicable"
Replies: 99
Views: 18179

Re: 1316: "Inexplicable"

I've not had a "haunted" before but I did get a "demonically possessed" as the official diagnosis out of one of those local corner computer shoppes you get. The BIOS kept resetting, you see. To exactly the wrong configuration, no matter what hardware was installed (this being bac...
by Mr_Rose
Thu Feb 07, 2013 12:20 pm UTC
Forum: Science
Topic: Suit of armor + Electric shock = ?
Replies: 20
Views: 5923

Re: Suit of armor + Electric shock = ?

Ring mail has the problem of holes, potentially big enough to let one or more of the darts through, compromising the protection somewhat. In addition to the lack of subtlety. Best protection would seem to be a leather duster lined with foil or conductive cloth. Still not precisely subtle but much le...
by Mr_Rose
Wed Jan 16, 2013 6:19 pm UTC
Forum: Science
Topic: Lunar soil as growth medium?
Replies: 32
Views: 4733

Re: Lunar soil as growth medium?

This is why I love this place. Thanks guys!
Also, that "lunar simulant -> growth media" idea is worth looking into. I wonder if they ship internationally...
by Mr_Rose
Wed Jan 09, 2013 1:35 am UTC
Forum: Science
Topic: Suit of armor + Electric shock = ?
Replies: 20
Views: 5923

Re: Suit of armor + Electric shock = ?

FWIW, I worked in electricity distribution for a while in my youth. I helped build a Faraday cage for high-voltage (1Mv) destructive testing of equipment. And I met a guy who'd survived a 33 kv shock - the voltage was high enough so that very little current traveled through his heart, but it did me...
by Mr_Rose
Wed Jan 09, 2013 12:27 am UTC
Forum: Science
Topic: Lunar soil as growth medium?
Replies: 32
Views: 4733

Lunar soil as growth medium?

Mostly for the sake of personal curiosity, does anyone know any good references for whether lunar soil/regolith can be exploited by terrestrial plants as a growth medium, and/or what would have to be done to it to improve it? I understand from (a) contemporary news account(s) that experiments along ...
by Mr_Rose
Thu Feb 16, 2012 6:58 pm UTC
Forum: Science
Topic: ITT: Baffles baffle Biggles - Chem Eng
Replies: 11
Views: 3010

Re: ITT: Baffles baffle Biggles - Chem Eng

Short version:
Increase turbulence == increased mixing == better distribution of heat and reactants.
by Mr_Rose
Mon Jan 09, 2012 3:31 pm UTC
Forum: Science
Topic: 3D TV, shouldn't it be easy?
Replies: 14
Views: 4198

Re: 3D TV, shouldn't it be easy?

I'm waiting for those guys working on free-space projection of 3D objects to get up to full HD and 50FPS before I start getting too invested in 3D display tech. http://www.youtube.com/watch?v=DkuK5Dlg8xI In the mean time I'm rather glad that simultaneous display of circular-polarised images for use ...
by Mr_Rose
Wed Jan 04, 2012 4:57 pm UTC
Forum: Science
Topic: Spidersilk wins again!
Replies: 30
Views: 4913

Re: Spidersilk wins again!

You do also need to protect your joints somehow, else they become instant bruises due to the increased skin elasticity there. That's what I was thinking of really, but I guess you could do that with pretty much any fibrous weave, if you could integrate it without rejection. Basically I was rememberi...
by Mr_Rose
Wed Jan 04, 2012 10:52 am UTC
Forum: Science
Topic: Spidersilk wins again!
Replies: 30
Views: 4913

Re: Spidersilk wins again!

Silkskin may not be any good for bullets, but I bet it would be a handy mod for spacers. Anything that would toughen the skin against vacuum would be good, no? Your skin isn't what you really have to worry about in vacuum, anyway. Of course. But assuming you live in a structure bordered by vacuum o...
by Mr_Rose
Mon Jan 02, 2012 9:18 pm UTC
Forum: Science
Topic: Spidersilk wins again!
Replies: 30
Views: 4913

Re: Spidersilk wins again!

Silkskin may not be any good for bullets, but I bet it would be a handy mod for spacers. Anything that would toughen the skin against vacuum would be good, no?
by Mr_Rose
Thu Dec 22, 2011 2:02 pm UTC
Forum: Science
Topic: "The Definition of Planet" (or, "The IAU is Dumb")
Replies: 82
Views: 11786

Re: "The Definition of Planet" (or, "The IAU is Dumb")

It was destroyed, if you call smaller debris parts "much reduced form" or just debris is your choice. Yeah, Kinda expected that. It doesn't seem likely (quite the opposite in fact) that you'd end up with three bodies emerging from the impact rather than two bodies and a bunch of junk for ...
by Mr_Rose
Thu Dec 22, 2011 12:07 pm UTC
Forum: Science
Topic: "The Definition of Planet" (or, "The IAU is Dumb")
Replies: 82
Views: 11786

Re: "The Definition of Planet" (or, "The IAU is Dumb")

...which is why I stipulated the two criteria together are necessary for an object to be a planet, not solely one or the other. Those moons have hydrostatic equillibrium, but they didn't form from the sun, they formed from planets. The Kuiper belt objects formed from the sun, but they don't have hy...
by Mr_Rose
Sat Dec 17, 2011 11:04 pm UTC
Forum: Science
Topic: "The Definition of Planet" (or, "The IAU is Dumb")
Replies: 82
Views: 11786

Re: "The Definition of Planet" (or, "The IAU is Dumb")

So, you could drop net energy output from the definition completely, then, couldn't you? Phrase it to say that a star produces from fusion (as opposed to radiates or outputs) more energy than it receives in radiation (which excludes leftover heat as well as tidal forces, etc.)? But how do you disti...
by Mr_Rose
Sat Dec 17, 2011 6:03 pm UTC
Forum: Science
Topic: "The Definition of Planet" (or, "The IAU is Dumb")
Replies: 82
Views: 11786

Re: "The Definition of Planet" (or, "The IAU is Dumb")

if it undergoes any fusion at all, it's a star. if it doesn't, it's a planet. Surely? If you have enough hydrogen, even at low pressure and temperature, some fusion ought to occur, even if it's on the order of a few reactions per cubic km per year. Significant doesn't mean a lot in my mind, but sig...
by Mr_Rose
Thu Nov 24, 2011 11:59 pm UTC
Forum: Science
Topic: Observation of dynamical Casimir effect
Replies: 19
Views: 2690

Re: Observation of dynamical Casimir effect

If you can tune it to produce lots of a particular particle, sure.
Would be interesting to see if you could even get the produced atoms to emerge in phase like in a laser.
by Mr_Rose
Tue Nov 08, 2011 11:19 am UTC
Forum: Science
Topic: Nuclear physics notation
Replies: 6
Views: 1667

Re: Nuclear physics notation

Looks a lot like electron orbital notation, but it's a bit off...either he's talking about molecules (doubtful) or he's talking about nuclear (baryonic?) orbitals which I know even less about.
by Mr_Rose
Fri Oct 21, 2011 8:39 am UTC
Forum: Science
Topic: Destruction of Nuclear Bombs Using Ultra-High Energy Neutrin
Replies: 5
Views: 1685

Re: Destruction of Nuclear Bombs Using Ultra-High Energy Neu

And if the accelerator is so bloody large that you need a unified World Government in order to afford it, why the hell do you need to worry about nuclear weapons nonproliferation anyway? Why, the Martians of course! (by the time you can afford a PeV accelerator, you can afford colonies. And those c...
by Mr_Rose
Wed Oct 19, 2011 8:38 pm UTC
Forum: Science
Topic: Is this real?
Replies: 25
Views: 5635

Re: Is this real?

Sigh. While nice levitation vids are nice, anything to do with magnets and youtube inevitably brings out the crazies. And then there's the free energy people.
Need to learn to stop reading the comments.
by Mr_Rose
Wed Oct 19, 2011 3:31 pm UTC
Forum: Science
Topic: Is this real?
Replies: 25
Views: 5635

Re: Is this real?

You can do some similar tricks at home... IE, strong magnets and diamagnetic "levitation". http://youtu.be/raT13OFAqZc Or spinning magnets. http://youtu.be/raT13OFAqZc They use liquid nitrogen or similar to cool the magnets down in the OP video AFAIK so not really a home experiment. You g...
by Mr_Rose
Fri Sep 30, 2011 5:40 pm UTC
Forum: Science
Topic: Jack Horner wants to make dinosaurs out of chickens
Replies: 35
Views: 6436

Re: Jack Horner wants to make dinosaurs out of chickens

The trouble with activating tooth-genes "throughout development" is that your chickensaurus ends up as a ball of protoplasm and almost-teeth. You not only have to ID the gene and make sure the version found in your chickens hasn't drifted into uselessness or been re-used for some other pro...
by Mr_Rose
Fri Sep 30, 2011 11:06 am UTC
Forum: Science
Topic: Well, this could change things (neutrinos)
Replies: 289
Views: 44987

Re: Well, this could change things (neutrinos)

It can't possibly be something as obvious and ridiculous as they took the GPS readings for the installation from the surface then forgot to account for them being underground and therefore slightl closer together, can it? Also, I forget how the gravity well affects space-time but they accounted for ...
by Mr_Rose
Sun Sep 25, 2011 3:30 am UTC
Forum: Science
Topic: Well, this could change things (neutrinos)
Replies: 289
Views: 44987

Re: Well, this could change things

thoughtfully wrote:
Diadem wrote:Noone can be that crazy.

Famous last words, anyone? :)

Ah, yes, the poe.
A fascinating problem. Probably a paper or two in it for someone.
by Mr_Rose
Tue Sep 06, 2011 8:19 pm UTC
Forum: Science
Topic: An interesting star...
Replies: 15
Views: 1702

Re: An interesting star...

Perhaps a binary formation? A large enough cloud with the expected distribution of lithium starts to form a supermassive star, drawing the heavier elements to the centre of mass for he cloud, effectively "filtering" the the lithium out of the outer region, then some other event ( a neighbo...
by Mr_Rose
Sun Sep 04, 2011 10:24 am UTC
Forum: Science
Topic: Eye transplant
Replies: 69
Views: 6195

Re: Eye transplant

Having given this more thought, I think the brain would have to make due with all the colors we currently experience (at least the non-colorblind). If it was possible for the brain to create other colors to use in our conscious experience I think one of them would've popped up while someone was und...
by Mr_Rose
Tue Aug 30, 2011 3:58 pm UTC
Forum: Science
Topic: Moon or Mars?
Replies: 42
Views: 5915

Re: Moon or Mars?

I'd like to get an orbital delivery system slightly more efficient than a really slow explosion up and running first. Do it right and we can achieve all three in short order....
by Mr_Rose
Sat Aug 27, 2011 9:14 pm UTC
Forum: Science
Topic: Question from a theist on universal beginnings and entropy
Replies: 290
Views: 25184

Re: Question from a theist on universal beginnings and entro

Sorry, slight tangent here; limecat, you describe an eternally unchanging god that also caused an event. This is a non-sequitur as far as I'm concerned. Please, explain?
by Mr_Rose
Sat Aug 27, 2011 7:48 pm UTC
Forum: Science
Topic: Question from a theist on universal beginnings and entropy
Replies: 290
Views: 25184

Re: Question from a theist on universal beginnings and entro

Come on guys! We know how this universe began: A slightly mad time traveller flew a big silver box into the heart of a massive temporal explosion in the old* universe and used the energy released therein to create this one as a nearly exact duplicate of the old one using the matter inside the box as...
by Mr_Rose
Fri Jul 29, 2011 12:12 am UTC
Forum: Science
Topic: Using solar heated water to generate electricity
Replies: 7
Views: 1917

Re: Using solar heated water to generate electricity

For cooling, what about running the "up" pipe behind a reflector/concentrator focussed on the "hot" area/tank?
Instead of just letting the extra light bounce off into the atmosphere.
by Mr_Rose
Wed Jul 20, 2011 1:32 am UTC
Forum: Science
Topic: An author's problem: A habitable planet orbiting a gas giant
Replies: 30
Views: 5379

Re: An author's problem: A habitable planet orbiting a gas g

First thing that comes to mind is actually cultural; specifically that your fictional culture will have a huge other dominant figure, assuming it follows similar patterns to primitive human cultures. Specifically, where much of our mythology has the Earth and the Sun as major players and the Moon as...
by Mr_Rose
Thu Jul 14, 2011 8:58 am UTC
Forum: Science
Topic: nature of elementary particles...
Replies: 66
Views: 8119

Re: nature of elementary particles...

A curiosity: UK_system7, why do you keep posting screen-shots of web-sites instead of (re-hosting and) posting to the actual image with a link to the source too? You did the same thing with your "video" and it strikes me as an odd and wasteful thing to do as now imageshack has a picture of...
by Mr_Rose
Wed Jul 13, 2011 1:49 pm UTC
Forum: Science
Topic: Oxygen Concentrator + Internal Combustion Engine = Win?
Replies: 6
Views: 3822

Re: Oxygen Concentrator + Internal Combustion Engine = Win?

Presumably some combination of one or more of the following: ⋅ The flow rate isn't high enough for use in engines ⋅ The zeolite filters are difficult to manufacture/recharge/replace in sufficient quantity ⋅ The extra gubbins required takes up too much room in your avera...
by Mr_Rose
Mon Jun 20, 2011 7:15 am UTC
Forum: Science
Topic: Does entropy contradict Evolution?
Replies: 30
Views: 5702

Re: Does entropy contradict Evolution?

Isn't the "classic" creationist quote on this one "surely if there were such a huge source of energy nearby, Science would have noticed it by now?"
by Mr_Rose
Thu Mar 31, 2011 8:45 pm UTC
Forum: Science
Topic: Help understanding Ampere Hours?
Replies: 14
Views: 2319

Re: Help understanding Ampere Hours?

IIRC, it's actually sorta both of the first two; the Ah is more of an expression of capacity than power, volume instead of flow - 12Ah can be drained by a 12A current in 1h or it can be drained by a 1A current in 12h or a 6A current in 2h and so on. Add up the total current of your devices and divid...
by Mr_Rose
Thu Mar 24, 2011 4:06 pm UTC
Forum: Science
Topic: public misconceptions
Replies: 1073
Views: 151580

Re: public misconceptions

I have heard that seeing a "bright blue flash" when you are working with nuclear materials is a sign that you just got a serious dose of radiation (the blue flash being said cherenkov radiation inside your eyeballs). Pretty sure that individual flashes are, while diagnostic of a problem, ...
by Mr_Rose
Wed Mar 23, 2011 4:17 pm UTC
Forum: Science
Topic: public misconceptions
Replies: 1073
Views: 151580

Re: public misconceptions

Sounds like an interesting thing to test with all those backscatter x-ray machines they have these days.
by Mr_Rose
Wed Mar 23, 2011 10:59 am UTC
Forum: Science
Topic: Nuclear Fusion
Replies: 140
Views: 18640

Re: Nuclear Fusion

The E=mc2 fusion group has a publishing embargo imposed by the DoD. I suppose they can't talk of engineering issues. But the concept is pretty simple, and there are many people aroung the world who are capable of doing the math/simulating the behaviour of the device, so I don't see why it would be ...
by Mr_Rose
Mon Mar 21, 2011 12:24 pm UTC
Forum: Science
Topic: public misconceptions
Replies: 1073
Views: 151580

Re: public misconceptions

People only use X percent, usually 10, of their brain. For some reason, that misconception shows up everywhere. Interestingly, I can't tell where this comes from any more. It could be a corruption of "only some percentage of brain tissue is actually neurons" (the rest being glial cells an...
by Mr_Rose
Sat Mar 19, 2011 3:52 am UTC
Forum: Science
Topic: public misconceptions
Replies: 1073
Views: 151580

Re: public misconceptions

"Fluorescent lightbulbs are bad for you because the light is different" I've heard this from a few people. I can't believe it every time I hear it. Light is light. When I ask them how it's bad for you, they give vague answers like "it discolours your skin to something yellower" ...
by Mr_Rose
Fri Mar 18, 2011 7:35 pm UTC
Forum: Science
Topic: Alternative Energy Storage
Replies: 50
Views: 5178

Re: Alternative Energy Storage

What about in hydrocarbons? I mean, we already have technologies adapted to extracting the stored energy, so all we need is some way to put it in, on the assumption that fossil fuel burning is only particularly bad because it a) upsets equilibrium by taking carbon out of storage and b) also releases...
by Mr_Rose
Sun Mar 06, 2011 11:36 pm UTC
Forum: Science
Topic: Laser Tractor Beam soon? ZOMG!
Replies: 5
Views: 1289

Re: Laser Tractor Beam soon? ZOMG!

That's pretty cool, as are laser tweezers, which I hadn't heard of before. You'll probably also like the optical stretcher which is part of my phd project. Edit: Sorry. The guys writing that wiki aparently have no clue about how the optical stretcher works and only describe a regular optical trap p...

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