Search found 581 matches

Wed Apr 06, 2011 7:19 pm UTC
Forum: News & Articles
Topic: UK to get £100m more for science
Replies: 11
Views: 1537

Re: UK to get £100m more for science

Also, you've got to look at how the funding is to be distributed. They are trying to shift away from 'blue skies' research into things with direct application. So good news if you're developing meta-materials that they think will pay off in 2 years time. Bad news if you're a theorist who is explorin...
Mon Jul 06, 2009 8:09 pm UTC
Forum: Books
Replies: 79
Views: 237165

OK, I did it. I finished Dune. My goodness me it was absolutely fucking atrocious. A reasonable plot at the beginning, weighed down by pretty poor prose, gradually became more and more awful. It's like the complete opposite of Lord of the Rings. Where Tolkien manages to create the impression tha...
Sun Jun 28, 2009 9:30 am UTC
Forum: Books
Replies: 79
Views: 237165

*This* is the bit that always makes me run a mile... "The drug's dangerous," she said, "but it gives insight. When a Truthsayer's gifted by the drug, she can look many places in her memory — in her body's memory. We look down so many avenues of the past . . . but only feminine avenues...
Wed Jun 03, 2009 9:05 pm UTC
Forum: Coding
Topic: Better way to do this (C)
Replies: 4
Views: 681

Re: Better way to do this (C)

Great, thanks. That's a really clever solution

I'm off a'coding...
Wed Jun 03, 2009 8:50 pm UTC
Forum: Coding
Topic: Better way to do this (C)
Replies: 4
Views: 681

Re: Better way to do this (C)

My pseudocode was rough, sorry. Bins are uniform in size, and using floats. I have a list of a few hundred floating point numbers roughly between 5 and 10 (more precisely a list of the log of numbers between 10^5 and 10^10), and would like to put them into bins of width 0.1. So, looking at order ~50...
Wed Jun 03, 2009 8:38 pm UTC
Forum: Coding
Topic: Better way to do this (C)
Replies: 4
Views: 681

Better way to do this (C)

Hi, I'm trying to write a programme that essentially has a histogram-type effect. Say I have a list of n numbers, and I want to sort them into bins based on their size - say m bins. The only way I can see how to do it (I'm using C) is to do something like read number from file -> x if(x > bin_1 and ...
Sun May 17, 2009 5:24 pm UTC
Forum: Science
Topic: QM problem; particle in a box
Replies: 9
Views: 1914

Re: QM problem; particle in a box

This is what was confusing me... I realise that [imath]F = - \frac{dV}{dx}[/imath]... but by definition V=0 inside the box. I don't see how you can say E(a) = V(a).
Sun May 17, 2009 4:25 pm UTC
Forum: Science
Topic: QM problem; particle in a box
Replies: 9
Views: 1914

QM problem; particle in a box

Hi Everyone, Quick QM problem here. Classic particle-in-a-box scenario. So, in 1D \psi = -\frac{\hbar}{2m} \frac{d^2\psi}{dx^2} + V\psi = E\psi and energy is E = \frac{\pi^2 \hbar^2}{2ma^2} Now, is it right to consider the force on the sides (e.g at x=0 and x=a) to be \frac{d\psi}{dx} ? I'm trying t...
Fri May 01, 2009 6:00 pm UTC
Forum: Music
Topic: Drummers in bands (suck)
Replies: 79
Views: 8443

Re: Drummers in bands (suck)

consumer_malfunction wrote:if you haven't yet, check out Tool.

Dang and blast you to Hades! You beat me to it.

OP - you really should listen to Tool. Danny Carey is a very, very good drummer.
Thu Apr 30, 2009 8:31 pm UTC
Forum: Music
Topic: Awesome bands that nobody's heard of
Replies: 551
Views: 100099

Re: Awesome bands that nobody's heard of

Session Americana.

I defy anyone to watch these and not want to have ear-babies with this group;

Thu Apr 30, 2009 7:07 pm UTC
Forum: Music
Topic: Best song lyrics.
Replies: 57
Views: 9763

Re: Best song lyrics.

OK, I think I may have been guilty of this, so I'll do my best to explain what I find so excellent about 'Fitter Happier'. I love the way that instead of trying to describe perfectly a certain concept, it simply provides several short, almost haiku-like vignettes which, when taken together, describe...
Thu Apr 30, 2009 11:33 am UTC
Forum: Music
Topic: Best song lyrics.
Replies: 57
Views: 9763

Re: Best song lyrics.

Fitter, happier, more productive, comfortable, not drinking too much, regular exercise at the gym (3 days a week), getting on better with your associate employee contemporaries, at ease, eating well (no more microwave dinners and saturated fats), a patient better driver, a safer car (baby smiling i...
Mon Apr 27, 2009 9:47 pm UTC
Forum: Science
Topic: QM problem; non-symmetrical 3D potential
Replies: 3
Views: 666

Re: QM problem; non-symmetrical 3D potential

Thanks, that makes perfect sense. It's an introductory undergraduate course, so I don't think they have to worry about higher level degeneracy.
Mon Apr 27, 2009 8:51 pm UTC
Forum: Science
Topic: QM problem; non-symmetrical 3D potential
Replies: 3
Views: 666

QM problem; non-symmetrical 3D potential

Hi, Embarrassing problem time. I'm actually tutoring this course in a few days time (Wednesday morning, so any help by then would be just fine), and I have totally forgotten how to do QM. The problem concerns a particle in a infinite 3D well, with non symmetrical walls (so 0 \leq x \leq a , 0 \leq y...
Sun Apr 26, 2009 12:22 pm UTC
Forum: General
Topic: Pens (and now pencils, too)
Replies: 93
Views: 13809

Re: Pens

dalahäst wrote:Someone should have thought about that domain before registering it.

I think that site is a joke... if I recall, you can't actually buy anything on it.
Sun Apr 26, 2009 12:20 pm UTC
Forum: General
Topic: Hype your ripe snipes 'n' gripes
Replies: 28619
Views: 3530507

Rant: Just spent some time with a few thirty-something acquaintances, and the conversation drifted towards someone's medical problems. The solution they are pursuing for their issue is NHS funded acupuncture. NHS funded . They then discussed how good it it that you can get such a wonderful, side eff...
Thu Apr 23, 2009 6:41 am UTC
Forum: Science
Topic: Miscellaneous Science Questions
Replies: 2958
Views: 721405

Re: Special relativity discussion/questions

Yes, there are data that show that a massive body can't reach c . A moving body has momentum p = \frac{mv}{\sqrt{ 1 - (\frac{v^2}{c^2})}} Which is asymptotic approaching the speed of light. What this means is that it would take an infinite amount of energy to accelerate a body of finite mass...
Wed Apr 22, 2009 12:43 pm UTC
Forum: Science
Topic: A strange question
Replies: 14
Views: 1756

Re: A strange question

Sure, but then you'd have to know what velocity the spacecraft has. Which the question didn't state.
Wed Apr 22, 2009 6:15 am UTC
Forum: Science
Topic: A strange question
Replies: 14
Views: 1756

Re: A strange question

Unless that is the question - it might be a trick. So, the (paraphrased) question is "light years - how, exactly, do you go about measuring the speed of a year?", and the answer would be "a light year is a distance, not a time period". That's all I can think of. It's a terrible q...
Tue Apr 21, 2009 7:59 pm UTC
Forum: Music
Topic: Singers Who Change Sex When You Vary the Pitch
Replies: 14
Views: 2219

Re: Singers Who Change Sex When You Vary the Pitch

Jonsi from Sigur Ros does this naturally
Tue Apr 21, 2009 7:57 pm UTC
Forum: Science
Topic: A strange question
Replies: 14
Views: 1756

Re: A strange question

Something is definitely getting lost in translation.

Maybe they're asking how long is a light year (in metres, say)?

Or, work out the speed of light given the length of a light year?

Umm... can't think of what else this might be. Perhaps a direct translation isn't the best way of doing this.
Tue Apr 21, 2009 12:37 pm UTC
Forum: Movies and TV Shows
Topic: Creepy/scary movies?
Replies: 66
Views: 7024

Re: Creepy/scary movies?

Clumpy wrote:The Orphanage (Spanish) is pretty much universally regarded as really well done.

Damn, I came here to say just that.

It is one seriously creepy film.
Tue Apr 21, 2009 9:37 am UTC
Forum: Music
Topic: Most Overrated Artists/Songs
Replies: 241
Views: 33473

Re: Most Overrated Artists/Songs

[...] Sigur Rós are overrated. (I know a lot of people will probably come to Sigur Rós protection, but trust me, there are some people I know of in that same genre that make way better music than Sigur Rós.) Such as? I'm not being defensive - as a Sigur Rós fan, I'd love to know of similar music, b...
Tue Apr 21, 2009 9:24 am UTC
Forum: General
Topic: The ToneMatrix
Replies: 38
Views: 2472

Re: The ToneMatrix

This is amazing! I think my week is now booked.

114690,114690,24,0,127000,0,8192,28676,0,8208,126976,16,28672,32,114688,592
Tue Apr 21, 2009 9:19 am UTC
Forum: General
Topic: Confused?
Replies: 29
Views: 2847

Re: Confused?

I'm confused as to why the first hint that summer might be on the way convinces my body to dump industrial quantities of histamines into my system, turning me from a normal human being into some kind of mobile mucous-producing headache.

Damn trees flinging DNA at each other.
Mon Apr 20, 2009 8:56 am UTC
Forum: Books
Replies: 79
Views: 237165

OK, Dune. I have tried to read it twice now, and both times literally couldn't get past the first maybe 20 pages. I just found it dreadful. I was expecting something great, but I just found it to be more like a parody of bad sci-fi than anything else. The constant introducing of obscure alien terms ...
Thu Apr 16, 2009 9:47 am UTC
Forum: Mathematics
Topic: Differential equation help
Replies: 1
Views: 514

Differential equation help

Hi all, I've got a second order D.E., and the way that I would normally solve it gives an answer different to what I think I should get. \ddot{\phi} = c\phi Where c is some combined constant. So, you just solve the auxiliary equation, k^2 - c = 0 k_1 = \sqrt{c},\;\; k_2 = - \sqrt{c} So, \phi = Ae^{\...
Thu Apr 16, 2009 6:56 am UTC
Forum: News & Articles
Topic: Oprah thinks atheists are not good dating prospects
Replies: 76
Views: 6247

Re: Oprah thinks atheists are not good dating prospects

I think she should be congratulated on having such a solid, self-consistent belief system. I would also enquire as to how she has managed to stay out of prison, after murdering so many people because they were members of other religions (Deuteronomy 13:7-12), worked on Sunday (Exodus 31:12-15), or w...
Thu Apr 16, 2009 6:49 am UTC
Forum: Science
Topic: my musings on tachyons.
Replies: 3
Views: 942

Re: my musings on tachyons.

You can't treat a time-like dimension in the same way as a space-like one. So, you are going wrong when you create your 3D volume, and do normal Pythagorean calculations on it. You need to use 4-space (I'm not sure why you only gave yourself two spatial dimensions), so there are three space-like dim...
Wed Apr 15, 2009 6:10 pm UTC
Topic: Simulated Consciousness & Free Will (Merge)
Replies: 81
Views: 10246

Re: Reality vs. perception of consciousness [Philosophy]

I have trouble with this though - you are basically setting the requirements for consciousness as external, observable factors, whereas it is inherently an internal, subjective phenomenon. Say I design a pastry that not merely looks, feels, smells, tastes, and behaves like cake, but any chemical an...
Wed Apr 15, 2009 5:30 pm UTC
Forum: Music
Topic: Music with crescendos?
Replies: 41
Views: 16985

Re: Music with crescendos?

Blinke wrote:Might be worth checking out, well, anything by Explosions in the Sky if you haven't already.

You beat me to it.

Anything post-rock flavoured will have plenty of these.

Try Sigur Ros, Godspeed You! Black Emperor, or God is an Astronaut for starters.
Wed Apr 15, 2009 5:17 pm UTC
Forum: Science
Topic: Relativity question from a physics No0b.
Replies: 6
Views: 1205

Re: Relativity question from a physics No0b.

What Seraph said. That is actually the true way to add any velocities together - the simple, linear version is an approximation. If you could measure with infinite precision, you would find that the relative velocity difference between you moving at 10 m/s and a ball moving away at -10 m/s wouldn't ...
Wed Apr 15, 2009 4:43 pm UTC
Forum: General
Topic: How do YOU say the word meme?
Replies: 108
Views: 30707

Re: How do YOU say the word meme?

Supporters of the concept of memes believe that they act as cultural analogues to genes, in that they self-replicate and respond to selective pressures. ... Richard Dawkins first introduced the word in The Selfish Gene (1976) to discuss evolutionary principles in explaining the spread of ideas and ...
Wed Apr 15, 2009 7:54 am UTC
Forum: General
Topic: World's Smallest Political Quiz - Read OP first!
Replies: 72
Views: 5741

Re: World's Smallest Political Quiz - Read OP first!

90/20 liberal.

This test definitely had a libertarian flavour, though. Not as good as the political compass.
Wed Apr 15, 2009 7:07 am UTC
Topic: Crime, excessive punishment, and injustice
Replies: 10
Views: 1901

Re: Crime, excessive punishment, and injustice

I actually think that the speeding offence is the worst of those that you listed.

There are speed limits for a reason, and this is because speeding kills people. Like, all the time.

Like, could you cite some sources?
Tue Apr 14, 2009 11:16 pm UTC
Topic: Simulated Consciousness & Free Will (Merge)
Replies: 81
Views: 10246

Re: Reality vs. perception of consciousness [Philosophy]

I believe the odd irony is that if a computer successfully 'pretends' to be conscious or alive (and passes all testing and criticism) then it will effectively be so. If a slice of cake looks, sounds, smells, tastes, and feels like cake then your senses tell you that you have a slice of cake. How co...
Tue Apr 14, 2009 11:07 pm UTC
Forum: General
Topic: Top 10 Reasons to Procrastinate
Replies: 22
Views: 3899

Re: Top 10 Reasons to Procrastinate

One of the best reasons for procrastination is that a lot of problems resolve themselves without a lot of effort. There is a book titled "The law of delay" that explains the phenomenon in detail. Wikipedia claims it is written by C. Northcote Parkinson. For example, my city got about 3-6 ...
Tue Apr 14, 2009 5:29 pm UTC
Forum: General
Topic: Accurate Internal Clock
Replies: 27
Views: 3011

Re: Accurate Internal Clock

Dragging this from memory, but I think I read somewhere that our internal body clock cycle is about 23 hours long. People kept in isolation without signs of day/night tend to eat and sleep on this 23 hour cycle. So, we use external clues to keep us continuously adjusted for the 24 hour cycle.
Fri Apr 10, 2009 2:22 pm UTC
Forum: News & Articles
Topic: Vampiritic electronic tattoos (not spam)
Replies: 135
Views: 13827

Re: Vampiritic electronic tattoos (not spam)

It´s inserted through a small incision as a tightly rolled tube, and then it unfurls beneath the skin to align between skin and muscle.

That sounds... incredibly painful.
Fri Apr 10, 2009 10:14 am UTC
Forum: News & Articles
Replies: 15
Views: 2134