Search found 421 matches

by LoopQuantumGravity
Wed Jan 09, 2008 11:37 am UTC
Forum: Science
Topic: Miscellaneous Science Questions
Replies: 2863
Views: 602760

Re: Common Questions

Gravity travels at the speed of light, 299792458 meters/second. This has been closely validated with an experiment, but it mostly comes from theory since it isn't easy to measure. Just to clarify, the results referred to by Eps assume General Relativity to be true (a safe assumption to be sure) and...
by LoopQuantumGravity
Wed Jan 09, 2008 11:34 am UTC
Forum: Science
Topic: Black Holes and Gravity
Replies: 59
Views: 3967

Re: Black Holes and Gravity

You're associating one phenomena in one part of the universe with another, and while there is most certainly a statistical relationship, density of matter within a galaxy is one factor that comes to mind, there is no reason to suggest that every time a black hole is formed a star is formed, or some...
by LoopQuantumGravity
Wed Jan 09, 2008 11:28 am UTC
Forum: Science
Topic: Pseudo science, and science funding
Replies: 91
Views: 7536

Re: Pseudo science

I might not be as hard on philosophers as you are (though I'm close) but I have a very close friend who is a philosopher of science and I took a couple of courses as an undergraduate on the topic. Thank *heavens* I had a very smart and capable professor who passed out explanations of many of the sc...
by LoopQuantumGravity
Wed Jan 09, 2008 2:17 am UTC
Forum: Science
Topic: Pseudo science, and science funding
Replies: 91
Views: 7536

Re: Pseudo science

And Vint Cerf and Robert Kahn are two people who should know what happened in the early Internet! His statement is still grossly inaccurate. But this is not really the topic to discuss this in. In fact I'm still hopeful that at some point you'll have the common decency to acknowledge that the theor...
by LoopQuantumGravity
Wed Jan 09, 2008 1:50 am UTC
Forum: Science
Topic: Nuclear Power (merged threads)
Replies: 325
Views: 47167

Re: Nuclear Power, what's your issue with it?

I have zero issue with nuclear power. I think it should be used way more. My only concern is the disposal of waste. Right now, it's not as big a deal because, as someone mentioned, it's not fully utilized. But if there were a lot of nuclear waste facilities, disposal of waste would be more of an is...
by LoopQuantumGravity
Tue Jan 08, 2008 11:56 pm UTC
Forum: Science
Topic: Nuclear Power (merged threads)
Replies: 325
Views: 47167

Re: Nuclear Power, what's your issue with it?

It's not commercially viable because noone is willing to be the first one to fully implement it. It's no more expensive to use as a fuel, and Thorium also has the advantage of being massively more abundant as a fuel. And yes, weapons grade stuff needs purification in a centrifuge to separate the 23...
by LoopQuantumGravity
Tue Jan 08, 2008 11:54 pm UTC
Forum: Mathematics
Topic: An abuse of probability
Replies: 45
Views: 3831

Re: An abuse of probability

You have a weighted coin with a 200% chance of getting a heads on any given flip (and therefore a -100% chance of getting a tails on any given flip.) You flip the coin twice. What are your odds of getting two tails? What are your odds of getting two heads? What does this all mean ? Hm, lemme try th...
by LoopQuantumGravity
Tue Jan 08, 2008 11:35 pm UTC
Forum: Science
Topic: Nuclear Power (merged threads)
Replies: 325
Views: 47167

Re: Nuclear Power, what's your issue with it?

My problem with it is that they're still using Uranium and Plutonium as a source of it, rather than Thorium, which is incapable of forming an unstable chain reaction, incapable of being used as a weapon, produces far less waste, and what waste is produces only has a very short half-life. It's also ...
by LoopQuantumGravity
Tue Jan 08, 2008 11:24 pm UTC
Forum: Science
Topic: Nuclear Power (merged threads)
Replies: 325
Views: 47167

Re: Nuclear Power, what's your issue with it?

Modern reactor designs you really have to try to fuck up, anyway. Read the NRC report. Check google for the justification of the record setting fine that was issued to the company in question. I said modern . 1970s =/= modern. Not only that, but the NRC did its job, caught them for not doing proper...
by LoopQuantumGravity
Tue Jan 08, 2008 6:22 pm UTC
Forum: Science
Topic: Pseudo science, and science funding
Replies: 91
Views: 7536

Re: Pseudo science

I mean, as an example, go to your dentist and try to explain to him how dentistry is all a conspiracy for the dentists to have guaranteed customers and we don't really need it. Well, it's probably a better analogy to try to explain to your dentist that fluoridation of water is a Communist conspirac...
by LoopQuantumGravity
Tue Jan 08, 2008 6:19 pm UTC
Forum: Science
Topic: Pseudo science, and science funding
Replies: 91
Views: 7536

Re: Pseudo science

This is why the majority of people who claim Fox News as their primary news source still believe that Saddam Hussein was actively involved with the terrorism of 9/11 and that U.S. forces have recovered WMDs in Iraq (both false, by the way). When you repeated it, I lumped you into the "don't bo...
by LoopQuantumGravity
Tue Jan 08, 2008 6:05 pm UTC
Forum: Science
Topic: Nuclear Power (merged threads)
Replies: 325
Views: 47167

Re: Nuclear Power, what's your issue with it?

My position is that there is nothing inherently wrong with it. However, I'm not sure that safe operation of nuclear facilities is compatible with standard American corporate corruption and greed. Making it hard for me to do my own checking up on things doesn't help. I mean, the NRC tries, and I hav...
by LoopQuantumGravity
Tue Jan 08, 2008 6:01 pm UTC
Forum: Science
Topic: Time reversal and second law of thermodynamics
Replies: 29
Views: 3138

Re: Time reversal and second law of thermodynamics

In any case, it seems that the reason for time-asymmetry may have to do with the fact that now time is acting as a dependent variable, and the long-term behavior of that we observe we've named "the arrow of time." I'm not a scientist, so I can't give a more technical account. No, time asy...
by LoopQuantumGravity
Tue Jan 08, 2008 5:50 pm UTC
Forum: Science
Topic: Certainty (not in a Heisenberg way)
Replies: 45
Views: 3661

Re: Certainty (not in a Heisenberg way)

In many ways, I view this as the scientist tacitly acknowledging the difference in the way we deal with uncertainty and the way the untrained public does. Most scientists are very careful when pressed, even about non-scientific questions, to claim that they're "sure" of something. For ins...
by LoopQuantumGravity
Tue Jan 08, 2008 10:48 am UTC
Forum: Science
Topic: Pseudo science, and science funding
Replies: 91
Views: 7536

Re: Pseudo science

Of course, Lee Smolin gave peer-review a huge kick between the legs when he went to the press about Lisi's work, before it was peer-reviewed. Motl, Hossenfelder, and Distler then showed that even after a brief glimpse that there are major issues (ex: battery slot not included, let alone batteries)....
by LoopQuantumGravity
Tue Jan 08, 2008 8:51 am UTC
Forum: Science
Topic: Science if we never touched Space
Replies: 31
Views: 2685

Re: Science if we never touched Space

There was a really great show on Discovery or TLC or something a while back that talked about some of this... The only thing I remember from it is fireman's air tanks were vastly improves by what we learned from making spacesuits. They were made like 50 lbs lighter, had more air, and were more resis...
by LoopQuantumGravity
Tue Jan 08, 2008 8:43 am UTC
Forum: Science
Topic: Pseudo science, and science funding
Replies: 91
Views: 7536

Re: Pseudo science

This is no different than the fucking homepatic medicine people, or Al Gore claiming to have invented the internet . If you use something that never happened as an example, you are a moron. :P Not to digress, but I do know what he said. First, my statement was obviously hyperbolic. Second, from the...
by LoopQuantumGravity
Tue Jan 08, 2008 8:10 am UTC
Forum: Science
Topic: Lets fix global warming.
Replies: 239
Views: 19275

Re: Lets fix global warming.

You'll note I used the words media bias. The problem is that most people don't have access (in a meaningful sense) to the science and, when they do, they rarely have the background required to interpret the results or gauge the quality of the science. The picture most people have of a field is one ...
by LoopQuantumGravity
Tue Jan 08, 2008 7:52 am UTC
Forum: Science
Topic: Time reversal and second law of thermodynamics
Replies: 29
Views: 3138

Re: Time reversal and second law of thermodynamics

Aren't the laws of thermodynamics statistical in nature, anyway? (In other words, it's not actually impossible, according to any of the more fundamental laws of nature, for the entropy of a closed system to decrease. It's just so incredibly unlikely that it's not generally worth considering.) Or do...
by LoopQuantumGravity
Mon Jan 07, 2008 11:09 am UTC
Forum: Gaming
Topic: Taking it seriously: The zombie problem
Replies: 1713
Views: 188591

Re: Taking it seriously: The zombie problem

Maseiken wrote:By the time it gets to you, it's body would be so dry, you could pretty much just take another step and it'd snap right off...


Tell that to the families of all the people who have been killed by mummies!
by LoopQuantumGravity
Mon Jan 07, 2008 8:43 am UTC
Forum: Logic Puzzles
Topic: The Man In The Mirror
Replies: 147
Views: 15338

Re: The Man In The Mirror

>look for battery Hmm? Where is that battery? Gone. That's where it is. > Judge distance to nearest boulder It's not a perfectly round clump. Last time was about 15ft. but it varies depending on which side you pass. You haven't been on this trajectory long enough to guess an average. > Judge previo...
by LoopQuantumGravity
Mon Jan 07, 2008 7:33 am UTC
Forum: Gaming
Topic: Taking it seriously: The zombie problem
Replies: 1713
Views: 188591

Re: Taking it seriously: The zombie problem

So you could hole out in the rain forest and they'd get eaten by spiders. Okay. What's the rule with bugs? Do bugs carry zombie virus if they eat some zombie? Because if a mosquito, or a gnat can spread it then the world will be full of zombies much faster. And you would need bug spray something se...
by LoopQuantumGravity
Mon Jan 07, 2008 7:04 am UTC
Forum: Science
Topic: Pseudo science, and science funding
Replies: 91
Views: 7536

Re: Pseudo science

I've encountered the genre and agree that it can be good. But it can be mixed. See, for instance, A Mathematician's Apology by Hardy for an example I didn't like. I recommend that you read Hilbert! by Constance Reid for a counterexample of someone who isn't a scientist doing a very good job of expl...
by LoopQuantumGravity
Mon Jan 07, 2008 6:47 am UTC
Forum: Mathematics
Topic: Why is the cosecant "co"?
Replies: 13
Views: 2373

Re: Why is the cosecant "co"?

While preparing for tomorrows lecture on trig functions, I was moved to ponder the following question: Why is the cosecant "co"? In light of the definitions csc=1/sin, and sec=1/cos, it seems that it would have been more natural to rename the secant and cosecant in the opposite fashion. I...
by LoopQuantumGravity
Mon Jan 07, 2008 6:19 am UTC
Forum: Mathematics
Topic: Infinity times zero == any number?
Replies: 18
Views: 2208

Re: Infinity times zero == any number?

You have now crossed the line from a simple rebuke to just being a dick. Please, and I say this with as much emphasis as I possibly can, fuck off. That wasn't necessary. You didn't have to take the extra step. What did you accomplish? What did you gain? Do you take a certain special pride in the fa...
by LoopQuantumGravity
Mon Jan 07, 2008 5:48 am UTC
Forum: Mathematics
Topic: Infinity times zero == any number?
Replies: 18
Views: 2208

Re: Infinity times zero == any number?

No I suppose it wasn't. I should have specified that by 'read that thread' I meant 'read first post and subsequent posts explaining why original post was wrong'. Anyway, thank you for clearing that up. So by "read the thread" you meant "didn't read the thread and then got pissy when ...
by LoopQuantumGravity
Mon Jan 07, 2008 5:44 am UTC
Forum: Science
Topic: Time reversal and second law of thermodynamics
Replies: 29
Views: 3138

Re: Time reversal and second law of thermodynamics

As far as we can tell, there's no reason that antimatter shouldn't follow the laws of thermodynamics. Of course, until we can manufacture a few thousand antiparticles, it's hard to test experimentally... IIRC, some of the statistical stuff can work very well even with only dozens of particles. I kn...
by LoopQuantumGravity
Mon Jan 07, 2008 5:39 am UTC
Forum: Religious Wars
Topic: Operating Systems
Replies: 666
Views: 74290

Re: Operating Systems

But, it's still not in a single uniform place; you have to use Google. Which means you get stuff like payware thrown into your results. And you still don't get one of the big benefits, which is it automatically checking for updates for you for anything you've installed through it. But if you know w...
by LoopQuantumGravity
Mon Jan 07, 2008 5:35 am UTC
Forum: Mathematics
Topic: Infinity times zero == any number?
Replies: 18
Views: 2208

Re: Infinity times zero == any number?

Durandal wrote:x/0 = infinity


Unless division has been radically redefined since that last time I took a math class, I'm pretty sure that this is about division by zero.
by LoopQuantumGravity
Mon Jan 07, 2008 5:30 am UTC
Forum: Mathematics
Topic: Infinity times zero == any number?
Replies: 18
Views: 2208

Re: Infinity divided by zero == any number?

Right, I read that thread. It pertained to 0/0 and whether or not it equaled one. Thanks for tearing me a new one guys. Seriously, is this thread's existence so annoying, so grating to your psyche that you feel to need to do your very best to tear it apart fundamentally? Would it not be easier to j...
by LoopQuantumGravity
Mon Jan 07, 2008 5:28 am UTC
Forum: Mathematics
Topic: Goldbach
Replies: 24
Views: 3503

Re: Goldbach

Okay, on the topic of Godel incompleteness, here's something I've been wondering. (This is an area of math I'm not very familiar with, since it doesn't tend to come up so much in physics!) I'm a little bit confused about some of the precise statements you can make about it, since most of what I read...
by LoopQuantumGravity
Mon Jan 07, 2008 5:13 am UTC
Forum: Mathematics
Topic: Infinity times zero == any number?
Replies: 18
Views: 2208

Re: Infinity divided by zero == any number?

Right, my friend recently came up with a rather interesting (if fundamentally wrong) theory, involving the notion that infinity divided by zero equals any number. His mathematical proof went something like this: x/0 = infinity Therefore (this is where he took the zero and multiplied it on both side...
by LoopQuantumGravity
Mon Jan 07, 2008 5:09 am UTC
Forum: Science
Topic: Pseudo science, and science funding
Replies: 91
Views: 7536

Re: Pseudo science

While I understand what you're saying, I respectfully disagree. I would not lightly disagree with a scientist's self-identification as a philosopher. Because that claim is likely to have substance behind it, and unless I know that substance very well I am not in a position to properly question that...
by LoopQuantumGravity
Mon Jan 07, 2008 5:00 am UTC
Forum: Science
Topic: Lets fix global warming.
Replies: 239
Views: 19275

Re: Lets fix global warming.

except that current solar cells struggle for even 50% efficiency (most designs are more like 30%). However, for plants, taking into account only direct conversion of solar energy is misleading, since plants also use chemical energy from nutrients in the soil. On the solar cell side, you have to man...
by LoopQuantumGravity
Mon Jan 07, 2008 4:56 am UTC
Forum: Gaming
Topic: Taking it seriously: The zombie problem
Replies: 1713
Views: 188591

Re: Taking it seriously: The zombie problem

I'm angling on zombies not being able to eat. OR, more precisely, being able to eat, but not to digest. As in, getting massive abdominal injuries (from lack of nervous feedback, and from impaling selves on fence spikes, etc) soon into the disaster and stuff falling out. I'm no zombie expert, but I ...
by LoopQuantumGravity
Mon Jan 07, 2008 4:48 am UTC
Forum: Religious Wars
Topic: Operating Systems
Replies: 666
Views: 74290

Re: Operating Systems

There is a difference between bundling your own software and providing an easy way of installing software. An easy way to install other people's software may even be seen as Microsoft being less of an monopoly than it is. I absolutely guarantee you that with 100% probability Microsoft would be sued...
by LoopQuantumGravity
Mon Jan 07, 2008 4:27 am UTC
Forum: Science
Topic: Any good web-place to learn about entropy?
Replies: 5
Views: 1060

Re: Any good web-place to learn about entropy?

Depending on your education level, you may want to take a university course on it. MIT's OpenCourseWare has a couple of courses on thermodynamics which explain thermo pretty well (as you'd expect, because hell, it's MIT) but it's possible that the maths involved might be a little higher than what y...
by LoopQuantumGravity
Mon Jan 07, 2008 4:13 am UTC
Forum: Science
Topic: Certainty (not in a Heisenberg way)
Replies: 45
Views: 3661

Re: Certainty (not in a Heisenberg way)

We actually can say many of these things are right based on the mathematical formalism behind them. As long as the assumptions made are correct, the predictions must be correct. Even if someone finds an exception to the assumptions, the predictions will still be right, because they only apply where ...
by LoopQuantumGravity
Mon Jan 07, 2008 4:07 am UTC
Forum: Science
Topic: Lets fix global warming.
Replies: 239
Views: 19275

Re: Lets fix global warming.

what do scientists know about fuel that actual race-car manufacturers don't? (or for that matter the racers themselves) I suspect he's not talking about performance, but about it being a 'sustainable' fuel. Yeah. There are big problems with expending energy to grow it, you need to use, you know, fu...
by LoopQuantumGravity
Mon Jan 07, 2008 3:59 am UTC
Forum: Science
Topic: Pseudo science, and science funding
Replies: 91
Views: 7536

Re: Pseudo science

is trying to say is that modern day philosophy thinks that it still has some authority in areas that have long since passed into their own fields. In this respect he is right, but is wrong in saying that "philosophers" have had no influence over math and science in the past. But they aren...

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