/sci/ - Science & Technology

Anonymous 12/12/04(Tue)04:21 No. 14564 ID: 3ece4d [Reply]

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well /sci/ I have never posted in your board and I'd prefer not to litter it up with contextually inappropriate posts. However, the title of this board Does include Technology so I'll give it a shot just in case:
Basically, I'm looking for a sturdy, medium sized laptop with good features that will support gaming. By "features" I'm referring to hard drive, RAM, etc. You see, I'm quite new to all of this, and again, I don't want to disrupt your board, so if you could even point me in the right direction it'd be mighty appreciated!
>pic unrelated

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Anonymous 12/12/04(Tue)04:23 No. 14565 ID: 3ece4d

>>14564
...should I redirect my inquisition to /halp/? would that be more appropriate?

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Anonymous 12/12/04(Tue)20:11 No. 14577 ID: 1b9a09

>>14565
Yeah, probably.

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Anonymous 12/12/16(Sun)06:57 No. 14642 ID: fbf06b

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Anonymous 12/11/22(Thu)07:00 No. 14469 ID: 6f1470 [Reply]

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greetings again /sci/. i come with more laymans questions. two this time, first:

we often describe the world of the very tiny as waves. photons, electrons and other particals exsist more as waves then discreet hard little balls of stuff. but as i understand it, a wave isnt a thing in itself, but a way for a thing to have energy move through it. sound is waves moving through atmosphere, waves on the beach is kinetic energy moving through the water, and so on. so if a particle could be better described as a wave, what is it a wave of? whats the medium its moving through? minute physics did a small blurb on how a wave can be both a particle and wave-like at the same time. but he went so fast and glossed over so much i dont really get it. can anyone here clarify? the video is here http://www.youtube.com/watch?v=NJtr5TOck_8

second: quantum mechanics makes a big to-do about the uncertainty of its workings. it cant give you any concrete answers, but can tell you the probability of a given event. is this an intrensic part of our universe? if i were to look up gods book of cheat codes, would i find a passage that says "the quantum world will always be chaotic and only measurable through probability?" or is this uncertainity more of a limit of our current technology? we just dont have a way of measuring things that small without disrupting they're natural behavior. but we could, theoretically one day have the means of measuring these things without changing they're behavior and thusly know with certainty how they work?

3 posts and 1 image omitted. Click Reply to view.

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Anonymous 12/11/22(Thu)20:09 No. 14475 ID: 54ae5c

>>14471

something like that, except the teleporting part. the wave is moving with the particle. it's not a standing wave where the crests and troughs are always in the same places and the particle just randomly appears at different crests and troughs.

the probability technically never reaches 0 or 100% anywhere. in practice the waveform is defined by setting a minimum threshold.

there's no such thing as a particle in two places at once. there are entangled pairs, which always have the opposite spins as eachother.

>>14472

the technical term is that they're fourier transforms of one another. fourier transformations involve converting between time domain analysis and frequency domain analysis of a wave. the former shows the value of the wave at each point in time, in other words, the position. the latter shows how much of the wave lies in each frequency band. the frequency of a wave is proportional to its energy and therefore its momentum. the common example (although not 100% accurate) is that the longer you hear a sound, the more accurately you can determine its average frequency, but more time has passed so it's harder to match that frequency to a specific time.

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Anonymous 12/11/24(Sat)18:35 No. 14502 ID: a1a664

>>14471
> as far as we know those are still shaped like"hard little balls" of stuff.

Actually, current understanding is that there is no such thing as a particle that is a hard little ball of stuff. In some conditions they might seem to behave almost as if they were, but a particle of "matter" is in essence just a tightly packed bundle of what you might otherwise call "energy".

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Anonymous 12/11/30(Fri)00:10 No. 14554 ID: 27a795

The are equations to do with this and some observed properties. De Broglie would be a name to search for, he proposed that all matter has a wavelength inversely proportional to its momentum. An example of duality (where something behaves as both a wave and a particle) is electron diffraction, contrary to the fact that electrons have a mass and therefore must be a particle they can also be diffracted when fired through crystal structures. One other note is that waves don't need a medium to move through, all E-M waves can move through a vacuum i.e. nothing

Anonymous 12/11/28(Wed)21:38 No. 14542 ID: cb9fa8 [Reply]

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I badly need to SME Mining Engineering Handbook, Third Edition. I am a poor student! Anyone got a pdf?

Anonymous 12/11/28(Wed)20:34 No. 14540 ID: cb9fa8 [Reply]

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newsfeed.time.com/2012/08/07/how-mit-students-scammed-the-massachusetts-lottery-for-8-million/ <---> anyone know the research or algorithm?

Anonymous 12/11/17(Sat)02:07 No. 14417 ID: 906243 [Reply]

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Maple, Mathematica, MATLAB… I’d like to learn how to use one of these computational software programs but I don’t know which one would be the most convenient for me. Here is some info:

>wants to do animations with 2D and 3D graphs
>is going to start Physics at uni soon (will these programs be of any use?)
>has no programming knowledge but willing to learn new stuff (as in: the program’s language)
>is currently doing multivariable calculus
>wants to use this at home, not at school
>willing to pay more if it’s worth it

So yeah, please share your experiences with these pieces of software and let me know what you think.

(USER WAS BANNED FOR THIS POST)

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Anonymous 12/11/17(Sat)17:04 No. 14423 ID: 906243

>>14419
>>14420
>>14422

Okay, thanks for the replies. I’ve asked a friend who started earlier this year and he said I’d have a ‘’Numerical Physics’’ class in which I will use C. I’ll follow your advice and see if Uni can get me a student’s license.

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Anonymous 12/11/18(Sun)04:40 No. 14424 ID: e33f87

>>14423

Awesome, best of luck. Those numerical physics courses can be a lot of fun if you let them.

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Anonymous 12/11/28(Wed)01:18 No. 14532 ID: 17b50f

Seek alternatives that respect your freedom.
Octave
Freemat
Maxima

Anonymous 12/11/24(Sat)12:11 No. 14498 ID: 6f1470 [Reply]

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im looking for any good documentaries about science. particularly physics and space. bonus points for them being easy to understand for layman with delusions of grandeur like myself.

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Nattajerk 12/11/24(Sat)13:06 No. 14499 ID: 0d428f

Carl Sagan's Cosmos

Carl Sagan's wonderful voice will do both the job as science teacher and the sweetest lullaby you'll ever hear

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Anonymous 12/11/27(Tue)01:06 No. 14519 ID: f1dbfb

>>14499
strewth.

It's the only tv series that's not animated I keep on my computer. You will not regret it.

...if

you

live.

Anonymous 12/11/26(Mon)03:45 No. 14514 ID: cb9fa8 [Reply]

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Is there anyone in the world experimenting in quantum mechanics applied to human neurophysiology, possible with pharmaceutical applications?

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Anonymous 12/11/26(Mon)04:27 No. 14515 ID: f1dbfb

Yes. Ask Sam Harris.

Qualitativia Anonymous 12/11/24(Sat)17:13 No. 14500 ID: cb9fa8 [Reply]

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"The preamble to a plea for forgiveness from a N head that was just found coordinating multiple complements to the complement with which it first co-occurred:
You are my complement; no mere adjuncts, lone like a bare infinitive in a non-finite subordinate clause, or stacked like a phalanx of phrases, can come between us. No thematic variant can ever extrapose me away from you. Let them openly question you and the innermost content of your lexemes; I know that our bond is selectional restrictional destiny. You are my complement, without which I am incomplete, a vacuous shell of a noun phrase, and together – only together – we are one."

An associate of mine put up this on facebook. All his work is like this. I don't understand. Care to illuminate me, my true friends?

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Anonymous 12/11/25(Sun)00:22 No. 14505 ID: 54ae5c

sounds like he's one of those morons who don't understand that the words in a thesaurus entry don't all have the same exact meanings and connotations. you should have gone to /lit/

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Anonymous 12/12/10(Mon)03:20 No. 14606 ID: 35a15d

He sounds like he's trying to post about math but failing miserably at it.

what is this Anonymous 12/11/21(Wed)17:51 No. 14462 ID: 3b0abe [Reply] Locked

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I found this component but I have no idea what it is.
It has two wires on both ends, red and black on one end and blue and white on the other.
All the text it has is:
Beyer
TR 45/BV35551
Made in W-Germany

I can't find any info on it from datasheet sites and thought that you might be able to help.

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Anonymous 12/11/21(Wed)19:09 No. 14463 ID: 13dba7

Could you be a little more descriptive.
For starters, what did you find it in? Where in the system is it located. Etc.

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Anonymous ## Mod ## 12/11/21(Wed)20:07 No. 14465 ID: 208b5a

Please keep crossposting to a minimum.

>>/halp/19578

No clemency No quarter 12/11/21(Wed)05:37 No. 14453 ID: cb9fa8 [Reply]

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What is the substrate of understanding?
How do we understand the unfamiliar unknown unknowns of the great out there?

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Anonymous 12/11/21(Wed)17:09 No. 14461 ID: c1bebf

In terms of science, it is observation and verification. All scientific understanding is built on a foundation of verifiable observations. Those observations that are not verifiable fall outside the scope of scientific reasoning.