Search found 23 matches

by Slothrop
Wed Oct 15, 2014 6:02 am UTC
Forum: Individual XKCD Comic Threads
Topic: 1434: "Where Do Birds Go"
Replies: 61
Views: 18764

Re: 1434: "Where Do Birds Go"

Wow ... what's up with me today? That hit me right in the feels.
by Slothrop
Tue Jun 24, 2014 6:58 am UTC
Forum: Science
Topic: Fermi's Paradox: Is life actually everywhere?
Replies: 35
Views: 5400

Re: Fermi's Paradox: Is life actually everywhere?

If a thing can't carry something analogous to genetic information, it can't evolve. If it can't evolve, you're just talking about randomly arising Boltzmann brains. Thank you. I've been doodling on a thought about intermittent self-awareness emerging from electric fluctuations in stars. My feeling ...
by Slothrop
Fri Jun 13, 2014 7:05 am UTC
Forum: Science
Topic: Locality of a Photon's Constituent Waves
Replies: 9
Views: 3102

Re: Locality of a Photon's Constituent Waves

Thanks for all the help, guys. I'll get back to you after I've sat down with the resources elliptic provided ... some questions and "what the?"s are bound to occur. It's dawned on me that my understanding of how this whole thing works is less than stellar ... which is concerning given that...
by Slothrop
Thu Jun 12, 2014 10:56 am UTC
Forum: Science
Topic: Locality of a Photon's Constituent Waves
Replies: 9
Views: 3102

Re: Locality of a Photon's Constituent Waves

...the wavefunction evolves according to the appropriate wave equation (Schrodinger's equation in non-relativistic QM) which gives nice smoothly evolving waves spreading out, interfering with each other and bouncing off the environment: very much like normal ripples in a pond. Out of curiosity: at ...
by Slothrop
Thu Jun 12, 2014 7:46 am UTC
Forum: Science
Topic: Locality of a Photon's Constituent Waves
Replies: 9
Views: 3102

Re: Locality of a Photon's Constituent Waves

But is it, or is it more of a can be explained as ? Why do you think there's a difference? The behaviour of particles such as photons can be explained using quantum theory, in which the particle is represented by a wavefunction. I get the feeling that it's a difference in that the wavefunctions are...
by Slothrop
Tue Jun 10, 2014 6:22 am UTC
Forum: Science
Topic: Locality of a Photon's Constituent Waves
Replies: 9
Views: 3102

Re: Locality of a Photon's Constituent Waves

But is it, or is it more of a can be explained as? I'm struggling with the notion that a wavefunction should instantly occur "all over space".
by Slothrop
Fri Jun 06, 2014 7:08 am UTC
Forum: Science
Topic: Locality of a Photon's Constituent Waves
Replies: 9
Views: 3102

Locality of a Photon's Constituent Waves

I'm reading Manjit Kumar's Quantum, which presents the historical decelopment of a physical field I'm absolutely oblivious to, and it got me wondering about something regarding the locality of photons and their constituent waves. If a photon is the sum of a wide range (infinite?) of simple sine wave...
by Slothrop
Thu Mar 06, 2014 8:38 am UTC
Forum: Language/Linguistics
Topic: "I don't think" at the end of sentences
Replies: 37
Views: 10195

Re: "I don't think" at the end of sentences

... It's added to the end of negative sentences as a "by the way this is just what I'm thinking at the moment" tag. Thank you for a good answer. I still feel, though, that this would be better achieved by merely appending a simple "I think". No need for the negation, in my mind....
by Slothrop
Tue Mar 04, 2014 8:39 pm UTC
Forum: Language/Linguistics
Topic: "I don't think" at the end of sentences
Replies: 37
Views: 10195

Re: "I don't think" at the end of sentences

Yablo wrote:... results in a double negative, but anyone using that sentence either doesn't understand/care, or they do understand and should be slapped.


Thanks, that's all I needed to know.
by Slothrop
Tue Mar 04, 2014 2:20 pm UTC
Forum: Language/Linguistics
Topic: "I don't think" at the end of sentences
Replies: 37
Views: 10195

Re: "I don't think" at the end of sentences

That very well may be the case.

Is it strictly on oddity of the same sort as "I could care less"? (I.e. the thinking, or lack thereof, not the Descarting.)
by Slothrop
Tue Mar 04, 2014 2:10 pm UTC
Forum: Language/Linguistics
Topic: "I don't think" at the end of sentences
Replies: 37
Views: 10195

"I don't think" at the end of sentences

I am confused about the use of "I don't think" at the end of sentences where it seems to lead to a double negation. Take the sentence "You shouldn't run with scissors, I don't think." The bad language aside, doesn't this lead to the conclusion that according to "I" we a...
by Slothrop
Wed Oct 23, 2013 7:10 am UTC
Forum: Individual XKCD Comic Threads
Topic: 1281: "Minifigs"
Replies: 105
Views: 20847

Re: 1281: "Minifigs"

My googling ability has been through a harsh reality-check this morning. Does anyone know where I can find the time series for average human mass? All of a sudden, figuring out whether we'll at least still outweigh the figures seemed much more important than work.
by Slothrop
Thu Mar 29, 2012 6:33 pm UTC
Forum: Science
Topic: Miscellaneous Science Questions
Replies: 2958
Views: 720738

Re: RELATIVITY QUESTIONS! (and other common queries)

Cheers, starslayer. I definitely need to brush up my vector math, but that wiki seems to go through it straight enough.
by Slothrop
Thu Mar 29, 2012 7:28 am UTC
Forum: Science
Topic: Miscellaneous Science Questions
Replies: 2958
Views: 720738

Re: RELATIVITY QUESTIONS! (and other common queries)

I probably won't be able to describe this in any understandable way, but here it goes. Why aren't there a 90 degrees phase shift between the electric and magnetic field oscillations in (?) a photon? I would have guessed that the electric field would be at its strongest where the change in the magnet...
by Slothrop
Wed Dec 21, 2011 4:15 pm UTC
Forum: Coding
Topic: Song analyzer in Python
Replies: 7
Views: 2744

Re: Song analyzer in Python

Do you need to have a parametric form? If not then something like kernel density estimation or some other non-parametric density estimation could help you with that task. Not sure if I understand what you mean here. Does the fact that "parametric form" doesn't tell me all that much relati...
by Slothrop
Tue Dec 13, 2011 1:15 pm UTC
Forum: Coding
Topic: Song analyzer in Python
Replies: 7
Views: 2744

Re: Song analyzer in Python

Oh, by the way. I'm looking for some reading on statistical analysis, does anyone have a recommendation? (It's both for this project and for kicks.) ... what kind of statistical analysis are we talking about here? There is a lot more to statistics than you may realize. We're talking about something...
by Slothrop
Thu Dec 08, 2011 6:48 pm UTC
Forum: Coding
Topic: Song analyzer in Python
Replies: 7
Views: 2744

Re: Song analyzer in Python

Thanks, I'll definitely look into that. I'm already familiar with Matlab's plotting, so that library will come in handy. I think I'll need to read up on how to best do this. I found this pdf , which hopefully is a good place to start. And to find out anything about the noise characteristics, I'll ne...
by Slothrop
Thu Dec 08, 2011 4:17 pm UTC
Forum: Coding
Topic: Song analyzer in Python
Replies: 7
Views: 2744

Song analyzer in Python

I've been trying to find a project to work on during the holidays. The plan so far has been to make a Markov text generator, but I'd just be walking in a friend of mine's footsteps - http://the-horoscope-blog.blogspot.com/ , he seems to have stopped updating it now. So, I remembered another thing I'...
by Slothrop
Thu Dec 08, 2011 4:03 pm UTC
Forum: Science
Topic: Teaching activities
Replies: 5
Views: 1221

Re: Teaching activities

Hm. I'll probably need to keep things as cheap as possible. We already have a fairly extensive pile of different experimenty things, it's just that I'm no good in thinking of stuff to do with it. And, perhaps more importantly, as soon as I try to do anything, one of the classes (the science one) tur...
by Slothrop
Thu Dec 08, 2011 1:59 pm UTC
Forum: Science
Topic: Teaching activities
Replies: 5
Views: 1221

Re: Teaching activities

Yes, biology and chemistry are included. High school (or the closest thing to it) spans three years in Norway. In the first year, the pupils are required to take a general science course. This covers some physics, some chemistry and loads of different biology related themes. Physics is a separate co...
by Slothrop
Thu Dec 08, 2011 12:37 pm UTC
Forum: Science
Topic: Teaching activities
Replies: 5
Views: 1221

Teaching activities

If this should rather be placed under the favorite home experiments thread, I apolgize - please just delete it. I'm a high school teacher who's lucky enough to teach science and physics. I especially enjoy the physics bit, but I have what seems like a common trait for a new teacher - I'm whiteboard-...
by Slothrop
Wed Dec 07, 2011 10:12 pm UTC
Forum: General
Topic: Who the dickens are you?
Replies: 10922
Views: 2375853

Re: INTRO THREAD THE THIRD

Hello everyone, Nameless 25 year old from Norway here. Currently working as a science/maths/physics teacher, a job I started this autumn. My degree is in something-product-development-something, but I've earned most of my credits in fluid mechanics of different sorts (and I thoroughly regret not goi...
by Slothrop
Wed Dec 07, 2011 2:29 pm UTC
Forum: Individual XKCD Comic Threads
Topic: 0987: "Potential"
Replies: 42
Views: 15967

Re: 0987: "Potential"

I have to show this to my math class, whom I'm constantly complaining to about not going for their full potential.

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