Search found 39 matches

by Nnelg
Tue Mar 03, 2015 1:07 am UTC
Forum: Individual XKCD Comic Threads
Topic: 1493: “Meeting”
Replies: 29
Views: 9777

Re: 1493: “Meeting”

orthogon wrote:
Klear wrote:I think I'd like working in their company. Of course, I'd be terrified of getting fired.

On the other hand, if you got made redundant that would just mean they hired an extra person to do the same job as you.

Nah, it's just HR messing around with the clone tool.
by Nnelg
Sat Nov 22, 2014 12:17 am UTC
Forum: Individual XKCD Comic Threads
Topic: 1450: "AI-Box Experiment"
Replies: 200
Views: 59994

Re: 1450: "AI-Box Experiment"

I'm suprised nobody has made a Con Air reference yet.
by Nnelg
Tue Aug 05, 2014 12:35 pm UTC
Forum: Individual XKCD Comic Threads
Topic: 1403: "Thesis Defense"
Replies: 52
Views: 18364

Re: 1403: "Thesis Defense"

I come on to find out if anyone had figured out the screen text yet. Instead I find a dissertation on forum policy which turned into a Homestuck reference. :P
by Nnelg
Sat Jul 26, 2014 4:59 pm UTC
Forum: Science
Topic: Compression and Degenerate Matter
Replies: 12
Views: 3313

Re: Compression and Degenerate Matter

Okay then.

Is it possible that at any point that volume would increase with increasing pressure? I remember reading about a similar counter-intuitive relationship with increasing mass somewhere.
by Nnelg
Wed Jul 23, 2014 8:28 pm UTC
Forum: General
Topic: Who Shot First? The Theoretical Physicist's Answer.
Replies: 4
Views: 2812

Who Shot First? The Theoretical Physicist's Answer.

Image
Original Work.

I hope I don't have to worry so much about people understanding it here...

(Hint: Think of Simultaneity.)
by Nnelg
Wed Jul 23, 2014 5:10 am UTC
Forum: Science
Topic: Compression and Degenerate Matter
Replies: 12
Views: 3313

Compression and Degenerate Matter

Suppose I had a sphere of iron, initially 1km in radius (so, about 3.3×10^13 kg mass). Now, suppose I applied external pressure in a linearly increasing manner. What would the shape of the graph of the relationship between external pressure and radius look like, and what state would the matter be in...
by Nnelg
Fri Nov 22, 2013 2:22 pm UTC
Forum: Individual XKCD Comic Threads
Topic: 1294: "Telescope Names"
Replies: 89
Views: 21461

Re: 1294: "Telescope Names"

"The Infinite Telescope" sounds like it actually will be used one day. And I can see a "Project Palantír" going down, too.

And I wouldn't be surprised if someday, someone managed to sneak in an E.O.S. acronym somewhere. :P
by Nnelg
Mon Nov 04, 2013 8:22 pm UTC
Forum: Individual XKCD Comic Threads
Topic: 1286: "Encryptic"
Replies: 102
Views: 30841

Re: 1286: "Encryptic"

This is why I have unique passwords for important things. (I reuse the same password for trivial stuff like forums: that way I won't forget it, but don't really care if it gets hacked.)
by Nnelg
Mon Sep 16, 2013 9:49 pm UTC
Forum: Individual XKCD Comic Threads
Topic: 1265: "Juicer"
Replies: 35
Views: 12626

Re: 1265: "Juicer"

All I can say is: Eww.

Just the thought of that concentrated sweetness is making me sick... :oops: (Wish this was recolored green...)
by Nnelg
Thu Sep 12, 2013 1:23 am UTC
Forum: What If?
Topic: What-If 0062: "Falling With Helium"
Replies: 68
Views: 17042

Re: What-If 0062: "Falling With Helium"

That was the envelope rather than the hydrogen igniting that caused the problem... Actually, that's a myth. Sure, the paint was flammable -but just barely. It burnt slowly and only at high temperatures (in fact, near the end of the disaster parts of the skin which where on fire died out by themselv...
by Nnelg
Thu Sep 12, 2013 12:56 am UTC
Forum: What If?
Topic: What-if 0061: "Speed Bump"
Replies: 72
Views: 16754

Re: What-if 0061: "Speed Bump"

PolakoVoador wrote:
keithl wrote:As a rule of thumb, it is imprudent to pass over speed bumps faster than orbital velocity.

I'll totally sig this

Me too. :)
by Nnelg
Thu Sep 12, 2013 12:37 am UTC
Forum: What If?
Topic: What-If 0049: "Sunless Earth"
Replies: 69
Views: 22382

Re: What-If 0049: "Sunless Earth"

rmsgrey wrote:What you may have been thinking of is the fact that, among orbits with the same periapsis, orbits with longer semi-major axes have greater orbital speed at periapsis (but lesser average orbital speed).

Yeah, that would be it then. (I blame Kerbal Space Program. :P)
by Nnelg
Thu Sep 12, 2013 12:30 am UTC
Forum: Individual XKCD Comic Threads
Topic: 1263: "Reassuring"
Replies: 152
Views: 29668

Re: 1263: "Reassuring"

And of course there will always be the "living being" thing we can hold over their CPUs. Are you so sure? All the most important factors of life are possible for machines: self-maintenance(Homeostasis/Metabolism), response to stimuli/adaptation to their environment, growth and reproductio...
by Nnelg
Tue Sep 10, 2013 7:08 am UTC
Forum: What If?
Topic: What-If 0020: "Diamond"
Replies: 75
Views: 25365

Re: What-If 0020: "Diamond"

Flumble wrote:Moreover it wouldn't be a relative precision (e.g. 8 digits for the one leading to 2 digits for the other) but rather an absolute precision on a quantum-mechanical scale.

Oh, that would explain why I was thinking that.
by Nnelg
Tue Sep 10, 2013 6:57 am UTC
Forum: What If?
Topic: What-If 0049: "Sunless Earth"
Replies: 69
Views: 22382

Re: What-If 0049: "Sunless Earth"

Now, since each planet is moving at a slower and slower orbital velocity as you move farther away from the sun, is it possible for some future orbital configuration of the planets to all end up crashing into each other if the sun were to no longer exist? Actually, the orbital velocity increases for...
by Nnelg
Mon Sep 09, 2013 9:16 pm UTC
Forum: What If?
Topic: What-If 0020: "Diamond"
Replies: 75
Views: 25365

Re: What-If 0020: "Diamond"

Hm... Something I just realized: At these insanely high momentums, we might actually see some weird macroscopic quantum mechanical effects begin to manifest themselves and interfere with the ideal relativistic solutions Munroe got. Specifically, I'm thinking of the Heisenberg Uncertainty Principle. ...
by Nnelg
Fri Aug 23, 2013 11:22 pm UTC
Forum: What If?
Topic: What-If 0058: "Orbital Speed"
Replies: 106
Views: 55391

Re: What-If 0058: "Orbital Speed"

Heh, of course the reason I hadn't read this thread earlier is because I was too busy playing Kerbal Space Program... 8-) I'm surprised nobody has linked to this page yet, though. It lists several methods of getting to orbit, including a brief mention of a "Bifrost Bridge" -but from what I...
by Nnelg
Sun Jul 28, 2013 9:56 pm UTC
Forum: Individual XKCD Comic Threads
Topic: 1243: "Snare"
Replies: 40
Views: 10694

Re: 1243: "Snare"

At 7 g's it would require five hundred kilometers to slow to a halt relative to the Earth's surface. Deceleration much faster than that, as noted, would be destructive to the ISS. So, in the ballpark of the length of the shaft, aka, if the net captures it by pivoting backwards and slowing along the...
by Nnelg
Tue Jun 18, 2013 4:43 pm UTC
Forum: Fictional Science
Topic: WWII Weaponry (w/ Time Traveller)
Replies: 18
Views: 8011

Re: WWII Weaponry (w/ Time Traveller)

Wait, if the Germans could introduce a sound-homing torpedo in 1943, why is a sound-homing bomb so tough to do? http://en.wikipedia.org/wiki/G7es_torpedo So the air equivalent to that sound-homing torpedo would be a bomb attached to a miniature zeppelin so that it could essentially hover without ma...
by Nnelg
Wed Jun 12, 2013 12:03 am UTC
Forum: Fictional Science
Topic: WWII Weaponry (w/ Time Traveller)
Replies: 18
Views: 8011

Re: WWII Weaponry (w/ Time Traveller)

actually, it would be intereresting to explore the consequences of preventing (at least the trauma of) pearl harbour, by warning the us in time of the attack. it could mean that the us never, or much later, join the war, which makes it a lot worse. If the attack happens at all, the U.S. will go to ...
by Nnelg
Tue Jun 11, 2013 10:56 pm UTC
Forum: Fictional Science
Topic: WWII Weaponry (w/ Time Traveller)
Replies: 18
Views: 8011

Re: WWII Weaponry (w/ Time Traveller)

First off, the Japanese had no chance in heck and ought not to have walked out in front of that truck. They knew that going in, actually. They were betting on getting a few crushing victories that would demoralize the American public, forcing congress to sue for peace. Informing the US government o...
by Nnelg
Tue Jun 11, 2013 12:06 pm UTC
Forum: Fictional Science
Topic: "Quark Drive" Plausibility/Feasibility
Replies: 24
Views: 10240

Re: "Quark Drive" Plausibility/Feasibility

Okay, so there's a point at which the surface tension of strangelets would be great enough to exothermically accept neutrons, correct? And that's below the threshold at which strangelets spontaneously eat everything, because they're slightly positively charged, so they still repel atomic nuclei and...
by Nnelg
Tue Jun 11, 2013 1:22 am UTC
Forum: Individual XKCD Comic Threads
Topic: 1223: "Dwarf Fortress"
Replies: 35
Views: 11346

Re: 1223: "Dwarf Fortress"

TimXCampbell: Seems like overkill when you could just use Wizard Mode. That's what it's for. I have never heard of Wizard Mode before. I wonder if it was added after I started playing NetHack in the early 80's. There's also "Exploration mode", which can be turned on at any point in any ga...
by Nnelg
Mon Jun 10, 2013 11:20 pm UTC
Forum: Fictional Science
Topic: "Quark Drive" Plausibility/Feasibility
Replies: 24
Views: 10240

Re: "Quark Drive" Plausibility/Feasibility

gmalivuk wrote:Because there are also electrons involved, which balance out the positive nucleus.

And so too would strangelets likely have orbiting electron clouds. (Probably not the same orbitals, but still.)
by Nnelg
Mon Jun 10, 2013 8:18 pm UTC
Forum: Fictional Science
Topic: "Quark Drive" Plausibility/Feasibility
Replies: 24
Views: 10240

Re: "Quark Drive" Plausibility/Feasibility

You yourself suspected inelastic collisions, Yeah, but I'm no particle physicist. :P and you yourself specified mutually repulsive particles. Because I didn't know the full definition of the Ideal Gas Law, and was thinking of particles repelling each other in a collision. Specifically, I was thinki...
by Nnelg
Mon Jun 10, 2013 8:03 pm UTC
Forum: Fictional Science
Topic: "Quark Drive" Plausibility/Feasibility
Replies: 24
Views: 10240

Re: "Quark Drive" Plausibility/Feasibility

The ideal gas model depends on the following assumptions: The molecules of the gas are indistinguishable, small, hard spheres All collisions are elastic and all motion is frictionless (no energy loss in motion or collision) Newton's laws apply The average distance between molecules is much larger t...
by Nnelg
Mon Jun 10, 2013 6:19 pm UTC
Forum: Fictional Science
Topic: "Quark Drive" Plausibility/Feasibility
Replies: 24
Views: 10240

Re: "Quark Drive" Plausibility/Feasibility

(Or whatever analogous phase of strange matter there is.) That's actually what I was referring to. I don't know if strange matter could be said to have a "gas" stage because it would react differently than gases we're familiar with. If we're talking about a mass of stable strangelets inst...
by Nnelg
Mon Jun 10, 2013 6:07 pm UTC
Forum: Fictional Science
Topic: WWII Weaponry (w/ Time Traveller)
Replies: 18
Views: 8011

Re: WWII Weaponry (w/ Time Traveller)

Thank you all. I hate to be like a dog with bone in my teeth, but... If my sound-seeking bomb uses tubes and a sensor array the weighs about 500 pounds, could it work? I'm sorry, but it's just got way too many problems to work. :( A powerful enough computer made from vacuum tubes would weigh closer...
by Nnelg
Mon Jun 10, 2013 3:37 pm UTC
Forum: Fictional Science
Topic: "Quark Drive" Plausibility/Feasibility
Replies: 24
Views: 10240

Re: "Quark Drive" Plausibility/Feasibility

Let me get this straight: You're proposing to shoot strangelets out into space with the very real possibility that they will come into contact with normal matter, at which point the strangelets will pretty much vaporize the matter That could only happen with strangelets that possess a very specific...
by Nnelg
Mon Jun 10, 2013 6:54 am UTC
Forum: Fictional Science
Topic: "Quark Drive" Plausibility/Feasibility
Replies: 24
Views: 10240

Re: "Quark Drive" Plausibility/Feasibility

You're right of course that there's no energy gain there, and as gmalivuk pointed out, the total energy and thus mass of the system can't increase depending on how you arrange the bits inside. Unless quarks somehow vanish along the way, right. If they do that, output matter would by necessity have ...
by Nnelg
Mon Jun 10, 2013 3:29 am UTC
Forum: Fictional Science
Topic: "Quark Drive" Plausibility/Feasibility
Replies: 24
Views: 10240

Re: "Quark Drive" Plausibility/Feasibility

That's begging the question. The whole idea of a quark star, or any kind of quark matter, is that baryons combine to form fewer baryons with the same number of quarks, is it not? Um, I'm pretty sure that Baryons by definition have exactly three quarks, so no it isn't. If strangelets can convert nuc...
by Nnelg
Sun Jun 09, 2013 11:41 pm UTC
Forum: Fictional Science
Topic: "Quark Drive" Plausibility/Feasibility
Replies: 24
Views: 10240

Re: "Quark Drive" Plausibility/Feasibility

That energy still has mass, though. Actually, I've finally realized that unless this device can violate Baryon Number Conservation, (not out of the question) then there can be no net gain of energy overall. (From converting it back into normal matter, I mean.) This method still might be a useful th...
by Nnelg
Sun Jun 09, 2013 10:00 pm UTC
Forum: Fictional Science
Topic: "Quark Drive" Plausibility/Feasibility
Replies: 24
Views: 10240

Re: "Quark Drive" Plausibility/Feasibility

I don't think strange matter actually has the properties that would be useful for this especially, since we've created a bunch of it in particle accelerators, and cosmic rays can generate the stuff, and can produce far higher energy impacts then our particle accelerators can, and yet there's no ice...
by Nnelg
Sun Jun 09, 2013 1:41 am UTC
Forum: Fictional Science
Topic: "Quark Drive" Plausibility/Feasibility
Replies: 24
Views: 10240

Re: "Quark Drive" Plausibility/Feasibility

My point was that if you want both high specific impulse *and* high thrust, you'll need to use an immense amount of power. Of course; that's why I'd like to know how much power this system would develop. :P Sure, but there'll be a lot of heat to get rid of, and radiative cooling isn't terribly good...
by Nnelg
Sun Jun 09, 2013 1:17 am UTC
Forum: Fictional Science
Topic: WWII Weaponry (w/ Time Traveller)
Replies: 18
Views: 8011

Re: WWII Weaponry (w/ Time Traveller)

How about a primitive smart bomb? Forget the early TV-guided drones we had in real life. What about a bomb that seeks out antiaircraft batteries by sound? Four microphones mounted on whiskers on the front, you drop it in the right general direction. The guns fire and bomb homes in on the noise. [b]...
by Nnelg
Sat Jun 08, 2013 11:12 pm UTC
Forum: Fictional Science
Topic: "Quark Drive" Plausibility/Feasibility
Replies: 24
Views: 10240

Re: "Quark Drive" Plausibility/Feasibility

These are inversely proportional at a given power level, unfortunately. Assume that propellent velocity is fixed and the device is acting at maximum power. Whether or not "strangelet bombs" would work as such, you also have to remember the Kzinti Lesson I was more worried about an "i...
by Nnelg
Sat Jun 08, 2013 10:19 pm UTC
Forum: Fictional Science
Topic: "Quark Drive" Plausibility/Feasibility
Replies: 24
Views: 10240

"Quark Drive" Plausibility/Feasibility

So, I've been thinking of far-future space travel tech, and came up with an idea for a possible engine. However, I'm afraid I just don't know enough particle physics to tell the full extent of the possibilities and limitations. The idea is based around Strange Matter with a specific set of propertie...
by Nnelg
Mon May 30, 2011 5:06 am UTC
Forum: Individual XKCD Comic Threads
Topic: 0905: "Homeownership"
Replies: 84
Views: 18490

Re: 0905: "Homeownership"

Too bad he didn't decide to put nails in the wall instead, it'd probably still stand unless he pulled them out.
by Nnelg
Mon May 30, 2011 5:02 am UTC
Forum: Individual XKCD Comic Threads
Topic: 0903: "Extended Mind"
Replies: 666
Views: 171910

Re: 0903: "Extended Mind"

Hm, I believe I know why this works: the majority of articles pass through science and then (eventually) mathematics, from which it goes on soon to philosophy. With a single well-placed edit, anyone could make it so that very few articles will make it to philiosophy; I know the perfect place for it....

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