Search found 846 matches

by Dopefish
Thu Jan 08, 2015 6:59 am UTC
Forum: The Help Desk
Topic: Downloading streamed video
Replies: 4
Views: 2744

Re: Downloading streamed video

That makes sense, thanks for the explanation. The page views aspect didn't occur to me so I was worried that maybe there was a technical reason behind why they'd deter downloads (separate 'internet tubes' or something get 'clogged' perhaps), but as long as it's just execs I'm potentially mildly anno...
by Dopefish
Thu Jan 08, 2015 2:47 am UTC
Forum: The Help Desk
Topic: Downloading streamed video
Replies: 4
Views: 2744

Downloading streamed video

I was going through firefox add-ons recently, and was noticing how many youtube downloaders and video grabber plugins there are these days, and it got me wondering... Can the various sites actually see the difference between someone streaming a given video and someone using a plugin like that to dow...
by Dopefish
Tue Jan 06, 2015 6:32 am UTC
Forum: School
Topic: Teaching myself math courses
Replies: 3
Views: 5677

Re: Teaching myself math courses

What ways work vary from person to person, so as long as you have reason to believe the source material is actually correct, you can pretty much try anything for awhile and if it's not clicking, then you can try a different resource. Use of multiple resources also helps to give you a sense for how c...
by Dopefish
Sun Dec 14, 2014 10:21 pm UTC
Forum: Science
Topic: Fingers on Humans
Replies: 80
Views: 13835

Re: Fingers on Humans

I have no difficulty whatsoever in touching my thumb to my pinky compared to other fingers. Maybe I just have extra flexible digits from my life as a gamer? Another thing to consider here when thinking of examples of why our digits are useful is that in the majority of cases the examples are human m...
by Dopefish
Fri Dec 12, 2014 3:04 am UTC
Forum: Science
Topic: Miscellaneous Science Questions
Replies: 2853
Views: 561494

Re: RELATIVITY QUESTIONS! (and other common queries)

Figured as much, thanks for the confirmation.

Probably shouldn't be thinking about such things when I'm lacking in sleep, relativity/curved space stuff is tricksy enough even when when I'm at my sharpest.
by Dopefish
Fri Dec 12, 2014 12:25 am UTC
Forum: Science
Topic: Miscellaneous Science Questions
Replies: 2853
Views: 561494

Re: RELATIVITY QUESTIONS! (and other common queries)

So I don't remember why I was thinking about this late last night, but for some reason I found myself wondering if it's possible for something to move in a direction that no component of its velocity is pointing. My gut reaction is of course not, pretty much because of the way velocity is defined, b...
by Dopefish
Fri Dec 05, 2014 5:50 am UTC
Forum: Mathematics
Topic: Sizes of Infinity
Replies: 60
Views: 11381

Re: Sizes of Infinity

Regarding "positive integers" and "natural numbers", the the latter isn't really universally defined as to whether or not it includes 0. Some will say it doesn't so there's no difference, and others will say it does include 0 so there's that small difference (although that differ...
by Dopefish
Mon Dec 01, 2014 6:33 pm UTC
Forum: Science
Topic: A new Theory on fundamental physics
Replies: 33
Views: 6826

Re: A new Theory on fundamental physics

I suspect a number of the frequents of this forum are more qualified than Randall to assess the quality of new theories anyway. Randalls certainly a bright guy with a physics background, but there's plenty of physics PhDs and active researchers around these forums who actively explore the boundaries...
by Dopefish
Sat Nov 01, 2014 4:54 am UTC
Forum: Coding
Topic: Coding: Fleeting Thoughts
Replies: 9743
Views: 1554824

Re: Coding: Fleeting Thoughts

Maybe this is only a tangentially 'coding' fleeting thought but... It never ceases to amaze me how well Yakk knows his shit. I mean I'm sure there's plenty of just-as-capable-if-not-more-so others around these forums, but the amount of fancy looking code he seems to just casually throw together in h...
by Dopefish
Sat Oct 25, 2014 4:35 am UTC
Forum: Mathematics
Topic: Expected number of games
Replies: 5
Views: 2535

Re: Expected number of games

Hmm, the ruin theory page does seem to be doing something relevant, but seems to have a continuous gain so isn't quite the right thing. The 1 dimensional random walk does however seem to be what I have in mind, although every analysis of it I've found from my initial searching just considers the P=0...
by Dopefish
Fri Oct 24, 2014 11:58 pm UTC
Forum: Mathematics
Topic: Expected number of games
Replies: 5
Views: 2535

Expected number of games

(Not homework.) Suppose I'm playing a game where my chance to win is P, and when I win I get X points, and when I lose I lose Y points. How many games should I expect to play before my point total is Z? It's been ages since I've done this sort of thing, and while my first thought was to divide Z by ...
by Dopefish
Sun Sep 28, 2014 5:46 pm UTC
Forum: Mathematics
Topic: The Ironic Paradox of Normalcy [Is my argument sound?]
Replies: 42
Views: 8929

Re: The Ironic Paradox of Normalcy [Is my argument sound?]

Tangential- How often is it the case that people actually know their IQ? In most of my experiences with people claiming IQ's it's been people basically pulling a number out of thin air ("I'm smarter than most people I know, so I'm probably around 130") or getting it off of some random onli...
by Dopefish
Mon Sep 22, 2014 11:55 pm UTC
Forum: Mathematics
Topic: The Three Squares Problem
Replies: 10
Views: 3789

Re: The Three Squares Problem

Something approaching 0 in the limit isn't a sufficient condition for the limit to actually exist. The most well known example being the harmonic series which is the infinite sum of 1/N, which clearly goes to 0 as N tends to infinity, but yet the series diverges. I'm not super familiar with inverse ...
by Dopefish
Sat Sep 20, 2014 3:27 am UTC
Forum: Science
Topic: Black Hole Thought Experiment
Replies: 15
Views: 4032

Re: Black Hole Thought Experiment

Is everything falling towards the center beyond the event horizon a consequence of every direction being towards the center due to GR weirdness, or are there still spatial 'away' directions and you'd just need infinite thrust or something along those lines to get away?
by Dopefish
Thu Sep 18, 2014 3:17 am UTC
Forum: Mathematics
Topic: Assumptions in Math (Calculus) word problems
Replies: 254
Views: 33657

Re: Assumptions in Math (Calculus) word problems

It's a good thing I don't always try to literally answer all the problems asked to me, because I've definitely had a number of tests/exams with problems where part of the instructions was to 'state all assumptions you make'. If I was more of a smartass I'd probably start off with "I assume you ...
by Dopefish
Tue Sep 16, 2014 6:53 am UTC
Forum: Mathematics
Topic: Math: Fleeting Thoughts
Replies: 378
Views: 101359

Re: Math: Fleeting Thoughts

My initial google of the matter revealed a presentation in which the spherical version of one was derived from the spherical version of the other, and the slide containing the derivation was pretty scary (and not terribly well formatted) which wasn't very inspiring. I did gave a quick attempt at for...
by Dopefish
Thu Sep 04, 2014 5:23 pm UTC
Forum: Science
Topic: A proof that hyperspace cannot transport matter
Replies: 26
Views: 5209

Re: A proof that hyperspace cannot transport matter

Well, one could try to do some handwaving in the details so that energy goes into/out of the portal itself (or is otherwise accounted for somewhere in the mechanism) so that energy is conserved or something along those lines. Still even lacking that, conservation of energy isn't necessarily a law of...
by Dopefish
Sat Aug 23, 2014 9:47 pm UTC
Forum: Mathematics
Topic: n1*n3 = (n2*n2)-1 - Is there a theorem for this or a proof?
Replies: 5
Views: 2332

Re: n1*n3 = (n2*n2)-1 - Is there a theorem for this or a pro

So the numbers being consecutive means that n1=n, n2=n+1, and n3=n+2. So then n1*n3=n*(n+2)=n^2+2n Meanwhile, n2*n2-1=(n+1)(n+1)-1=(n^2+2n+1)-1=n^2+2n, and so n1*n3=(n2*n2)-1 as you've found. Also, note that I took n1=n, but I could just as well have said n2=n, and thus n1=n-1 (and n3=n+1), which co...
by Dopefish
Sat Aug 09, 2014 8:32 pm UTC
Forum: Coding
Topic: Programing a Baseball simulator (Cancelled)
Replies: 27
Views: 7549

Re: Programing a Baseball simulator - worth it?

Depending on how much coding experience you have, and if you enjoy programming itself at all, this seems like it could be a nice little project. One of the woes lots of new programmers can have is that they often lack motivation to work on trivial little 'hello world'-esque programs since they'd rat...
by Dopefish
Wed Aug 06, 2014 4:46 am UTC
Forum: Mathematics
Topic: GISHWHES Erdos Number challenge
Replies: 19
Views: 5084

Re: GISHWHES Erdos Number challenge

Out of curiosity, is giving people who had essentially no contribution to the academic content of a paper coauthorship a standard thing? Not intended as a judgement of the practice, it's just the first I've actually heard of it (although my academic life hasn't gone past undergrad so not much exposu...
by Dopefish
Fri Aug 01, 2014 4:45 pm UTC
Forum: Mathematics
Topic: is mathematics a religion?
Replies: 82
Views: 13447

Re: is mathematics a religion?

Is "religious witnessing" a specific thing, or is it more just a matter of "I am witnessing you do math, and I feel math is a religion, and thus I am witnessing religion i.e. I am engaged in religious witnessing"? There are inevitably those out there whose relationship with mathe...
by Dopefish
Tue Jul 29, 2014 5:25 am UTC
Forum: The Help Desk
Topic: Free Antivirus/Anti-malware
Replies: 25
Views: 19940

Re: Free Antivirus/Anti-malware

So as long as this decided to be bumped, do people still endorse Malwarebytes as a good anti-malware option? It was good for awhile, but at some point it decided it wanted to update itself to do more things (act as an antivirus too I think?) and then I guess my trial expired or something and it star...
by Dopefish
Thu Jul 24, 2014 1:30 am UTC
Forum: Mathematics
Topic: (what is) a multiplicative order of a finite field?
Replies: 8
Views: 2724

Re: (what is) a multiplicative order of a finite field?

Just skimming the wiki page for multiplicative order you have there, k is the smallest positive integer k, such that a^k = 1 mod n. Since it needs to be positive, k can't be 0, so just trying increasingly large integers starting at k=1 should work to find it. I don't actually know anything about thi...
by Dopefish
Thu Jul 17, 2014 2:18 am UTC
Forum: The Help Desk
Topic: Keep losing sound on laptop ..........
Replies: 12
Views: 7026

Re: Keep losing sound on laptop ..........

As a complete shot in the dark, maybe explore your power settings? I've heard of devices being disabled after a period of time as part of some weird power saving rules, so perhaps something along those lines is hitting your audio device. Normally I've heard it happening for usb devices and not audio...
by Dopefish
Fri Jul 04, 2014 5:46 am UTC
Forum: Coding
Topic: Python puzzles
Replies: 20
Views: 4102

Re: Python puzzles

Actually... Is it required that the lines given actually execute? Can we just precede them with "print 0; exit"? (It's not stated if this is a script that's being run or lines entered at the Python REPL.) Presumably the "#this line prints 0" part means that a pre...
by Dopefish
Mon Jun 23, 2014 4:21 pm UTC
Forum: Science
Topic: Speed of Propagation of a Magnetic Field.
Replies: 116
Views: 24857

Re: Speed of Propagation of a Magnetic Field.

This is not directed at the OP: It's been ages since I did E&M, and I wasn't amazing at it back when I did do it, but... isn't one of the reasons electromagnetic forces are 'electromagnetic forces' and not 'electric forces' and 'magnetic forces' because one can be made to look like the other (or...
by Dopefish
Sat Jun 14, 2014 6:31 am UTC
Forum: Science
Topic: Mark McCutcheon's Final Theory of Everything
Replies: 154
Views: 25967

Re: Wrong on the Internet: The Final Theory

I feel like this 'theory', as with most physics theories that aren't from PhD folk who have spent their lives working on these things, is one of those theories that might sound appealing and maybe makes sense if you don't think too hard about it, but it all starts off with something functionally equ...
by Dopefish
Sat Jun 14, 2014 2:47 am UTC
Forum: School
Topic: Title for grad student teaching a class?
Replies: 16
Views: 10754

Re: Title for grad student teaching a class?

In the handful of classes I've taken from graduate students, they opted to have us use their first name. Although really most of the classroom based interaction amounted to little more than *hand raise* "Yes?" "<question>" "<answer>" and no actual name/title calling rea...
by Dopefish
Fri May 16, 2014 6:20 pm UTC
Forum: Science
Topic: Unidirectionally permeable membranes and entropy
Replies: 48
Views: 6448

Re: Unidirectionally permeable membranes and entropy

I think the issue some people have, including myself, is that "There is a 1 in 10^10^26 chance of all the air molecules in the room randomly pack themselves into the corner" is a different statement from "It is not possible for all of the air molecules in the room order themselves int...
by Dopefish
Thu May 15, 2014 6:41 am UTC
Forum: Science
Topic: Unidirectionally permeable membranes and entropy
Replies: 48
Views: 6448

Re: Unidirectionally permeable membranes and entropy

I must say the statistical laws of thermo that apply to ensembles have never been as compelling as what seem like more fundamental laws governing all the individual particles. Statistics works, and sure at equilibrium and on average the laws of thermodynamics should always hold, but fluctuations (ho...
by Dopefish
Tue May 13, 2014 7:23 pm UTC
Forum: Science
Topic: Calculating error from systematic errors
Replies: 7
Views: 1550

Re: Calculating error from systematic errors

by Dopefish
Tue May 13, 2014 6:23 am UTC
Forum: Mathematics
Topic: Need second opinion. I think I disproved God.
Replies: 72
Views: 10720

Re: Need second opinion. I think I disproved God.

I sortof skimmed it, but I imagine the biggest point of contention would be with how you're choosing to define 'real'. It's a reasonable enough one to use perhaps since you can at least reason with it, but it's probably not completely in line with how everyone might want to use it. (Many people woul...
by Dopefish
Thu Apr 03, 2014 7:24 pm UTC
Forum: Mathematics
Topic: quarkcosh1's math coincidences thread
Replies: 32
Views: 7315

Re: I am looking for a certain type of 2 LED's

Is there any particular reasoning on which of the two in the ratio is on the top or the bottom?

One of your ratios is less than 1, so it's not a matter of just consistently putting the higher frequency one in the numerator.
by Dopefish
Thu Apr 03, 2014 9:44 am UTC
Forum: General
Topic: Mod Madness 2014 : The Announcement
Replies: 542
Views: 106328

Re: Mod Madness 2014 : The Announcement

I imagine the particular forums might matter too. Legit science and math questions where being precise and clear is key to their very function I would think mostly break during mod madness, but more general discussions of cheese people can probably get by with less precision on, or even have it enri...
by Dopefish
Wed Apr 02, 2014 6:15 am UTC
Forum: The Help Desk
Topic: Message appears in nonsensical sentences on here .....
Replies: 7
Views: 2435

Re: Message appears in nonsensical sentences on here .....

Certain parts of the forum it's hard to tell the difference. Ranging from the obvious one, to the basically elephant themed ones. I actually found this years seemed to be relatively tame, as things were still maybe understandable at the end. Then again, I think I said similarly last year. Still, it ...
by Dopefish
Fri Mar 28, 2014 2:07 pm UTC
Forum: General
Topic: Mod Madness 2014 : The Announcement
Replies: 542
Views: 106328

Re: Mod Madness 2014 : The Announcement

Mildly radioactive.
by Dopefish
Sat Mar 22, 2014 6:23 am UTC
Forum: Mathematics
Topic: Axiomatic mathematics has no foundation
Replies: 158
Views: 30096

Re: Axiomatic mathematics has no foundation

I am somewhat uncomfortable with the use of "we" in statements like "We have now established/shown/proven..." when I haven't really seen anything that resembles you showing/proving anything despite the volume of words being used. It has been established that the lack of foundati...
by Dopefish
Thu Mar 20, 2014 4:36 pm UTC
Forum: General
Topic: Mod Madness 2014 : The Announcement
Replies: 542
Views: 106328

Re: Mod Madness 2014 : The Announcement

Leeeeeeroy......
by Dopefish
Wed Mar 19, 2014 7:06 pm UTC
Forum: Mathematics
Topic: Axiomatic mathematics has no foundation
Replies: 158
Views: 30096

Re: Axiomatic mathematics has no foundation

I am somewhat uncomfortable with the use of "we" in statements like "We have now established/shown/proven..." when I haven't really seen anything that resembles you showing/proving anything despite the volume of words being used. I additionally don't think you should be making re...
by Dopefish
Sun Mar 16, 2014 8:02 pm UTC
Forum: Mathematics
Topic: Indefinite integral question
Replies: 10
Views: 2419

Re: Indefinite integral question

This might be a spoiler, but I haven't actually done anything and it's just what comes to mind for me and may not get anywhere. Just in case though, I'll stick it in spoilers. What happens if you take the derivative of both sides of the equation? It seems to me that assuming the given equation is tr...

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