Search found 4945 matches

by doogly
Fri Apr 27, 2018 4:29 pm UTC
Forum: Mathematics
Topic: Name of Rounded Triangle
Replies: 8
Views: 1888

Re: Name of Rounded Triangle

oh yes, word.
by doogly
Fri Apr 27, 2018 3:39 pm UTC
Forum: Mathematics
Topic: Name of Rounded Triangle
Replies: 8
Views: 1888

Re: Name of Rounded Triangle

Six arcs, from three ellipses.
by doogly
Fri Apr 27, 2018 2:47 pm UTC
Forum: Mathematics
Topic: Name of Rounded Triangle
Replies: 8
Views: 1888

Re: Name of Rounded Triangle

The Reuleaux triangle is one of these though.

Oh, but I suppose a degenerate case. In general you'd get a hull of three ellipses, not circles.
by doogly
Thu Apr 26, 2018 1:28 pm UTC
Forum: Fictional Science
Topic: Yet another FTL question...
Replies: 35
Views: 4670

Re: Yet another FTL question...

I don't follow what you are talking about with cylinders but it sounds suspicious.

Here's a nice writeup with some diagrams:
https://arxiv.org/pdf/gr-qc/0503070.pdf
by doogly
Wed Apr 25, 2018 8:45 pm UTC
Forum: Fictional Science
Topic: Yet another FTL question...
Replies: 35
Views: 4670

Re: Yet another FTL question...

I thinkt he best answer is "it's not that special." There is a sort of important analog for a kind-of-special frame used in cosmology -- if you operate at a scale where the universe is just a homogeneous bulk, then there is a frame in which that bulk is at rest. This frame is pretty specia...
by doogly
Fri Apr 20, 2018 3:29 pm UTC
Forum: Mathematics
Topic: Curve Filling a Rectangle
Replies: 5
Views: 1331

Re: Curve Filling a Rectangle

Sure, the Hilbert curve is defined with an x(s) and y(s), and if you take two bump functions and feed those in, you can get what you want.
by doogly
Thu Apr 19, 2018 12:02 pm UTC
Forum: Science
Topic: Particles as sets?
Replies: 7
Views: 1484

Re: Particles as sets?

Sure, but sets don't have nice properties. Their only property is the number of things in them. It is a lossy reduction.
by doogly
Wed Apr 18, 2018 7:02 pm UTC
Forum: School
Topic: Justifying the Death Penelty
Replies: 54
Views: 5330

Re: Justifying the Death Penelty

we hold these truths to be self evident!
by doogly
Wed Apr 18, 2018 1:48 pm UTC
Forum: School
Topic: Justifying the Death Penelty
Replies: 54
Views: 5330

Re: Justifying the Death Penelty

Mutex wrote:I can't wait for j_s's next one sentence retort to the many major problems with his argument people have pointed out.

Or to problems down the line, while entirely ignoring that his entire premise is to beg the question. Homie better restructure the entire thing. F.
by doogly
Thu Apr 12, 2018 4:37 pm UTC
Forum: School
Topic: Justifying the Death Penelty
Replies: 54
Views: 5330

Re: Justifying the Death Penelty

Unless you have already claimed that A is morally acceptable. Then, if it is worse than something else, that thing can only be more acceptable, to the extent that one has nice clean notions of "acceptable" and "worse." They should probably be inverses of each other. But still, yo...
by doogly
Wed Apr 11, 2018 3:26 pm UTC
Forum: Mathematics
Topic: Horizontal Asymptote For Rational Equations
Replies: 9
Views: 1468

Re: Horizontal Asymptote For Rational Equations

yeah simple test cases are great for that kind of thing
totally aces
by doogly
Tue Apr 10, 2018 12:28 pm UTC
Forum: School
Topic: Justifying the Death Penelty
Replies: 54
Views: 5330

Re: Justifying the Death Penelty

Yeah you're basically forced into that kind of an approach if you are for the death penalty. You have to think retribution is a reasonable motive for the justice system.
by doogly
Mon Apr 09, 2018 4:58 pm UTC
Forum: Mathematics
Topic: Horizontal Asymptote For Rational Equations
Replies: 9
Views: 1468

Re: Horizontal Asymptote For Rational Equations

It can cross the x axis, do some stuff, and then come back around to it asymptotically. You're correct about where it crosses, but the conclusion that it can't also be an asymptote is wrong.
by doogly
Mon Apr 09, 2018 3:21 pm UTC
Forum: School
Topic: Justifying the Death Penelty
Replies: 54
Views: 5330

Re: Justifying the Death Penelty

jewish_scientist wrote: blah blah Standfor Prison Experiment blah blah.

This guy is even worse than Kant. It's more of a bit of melodrama or reality tv than an experiment. It's a bit sensational but not actually where you should refer any psychology research.
by doogly
Fri Apr 06, 2018 3:56 pm UTC
Forum: School
Topic: Justifying the Death Penelty
Replies: 54
Views: 5330

Re: Justifying the Death Penelty

This is the proper notion of "begging the question." You are being asked to argue that the death penalty is moral, and you are using as a premise a situation where you assume the death penalty is moral. But that is *precisely* what you are trying to show.
by doogly
Fri Mar 30, 2018 7:35 pm UTC
Forum: Mathematics
Topic: My take on Godel's incompleteness theorems
Replies: 42
Views: 5352

Re: My take on Godel's incompleteness theorems

This is why Plato gave up on it. Why other people decided to run with it anyway is beyond me.
by doogly
Fri Mar 30, 2018 4:25 pm UTC
Forum: Mathematics
Topic: My take on Godel's incompleteness theorems
Replies: 42
Views: 5352

Re: My take on Godel's incompleteness theorems

Only You Can Prevent Mission Creep
by doogly
Thu Mar 29, 2018 7:49 pm UTC
Forum: Mathematics
Topic: Proving One of Demorgan's Law
Replies: 5
Views: 1377

Re: Proving One of Demorgan's Law

If you can't assume that truth tables are a valid proof mechanism, include a chapter 0 page in your problem set where you prove that they are valid.
by doogly
Thu Mar 29, 2018 5:18 pm UTC
Forum: Mathematics
Topic: Proving One of Demorgan's Law
Replies: 5
Views: 1377

Re: Proving One of Demorgan's Law

Writing out the table for the four cases is likely your best angle.
by doogly
Wed Mar 28, 2018 5:54 pm UTC
Forum: News & Articles
Topic: In other news... (humorous news items)
Replies: 14772
Views: 2219396

Re: In other news... (humorous news items)

CorruptUser wrote:I'd sooner be taught physics by Professor M Mathers than the ICP clowns. Magnets...

ok but https://www.youtube.com/watch?v=wMFPe-DwULM
by doogly
Fri Mar 23, 2018 8:39 pm UTC
Forum: Science
Topic: Quantum Question
Replies: 110
Views: 11029

Re: Quantum Question

What's uncertain in quantum mechanics is the outcome of a classical measurement, not the evolution of a state.
by doogly
Thu Mar 22, 2018 3:33 am UTC
Forum: Science
Topic: Quantum Question
Replies: 110
Views: 11029

Re: Quantum Question

If you did the time reversal to the entire universe, you'd replay back to the big bang, so pretty low entropy. If it were just your little bomb, eventually things would come in and interfere and your system would have its specialness aggregated away.
by doogly
Thu Mar 22, 2018 1:24 am UTC
Forum: Science
Topic: Quantum Question
Replies: 110
Views: 11029

Re: Quantum Question

Entropy always goes up, so if you have a simulation of the universe that correctly models that property, and then you reverse the momenta of everything in that simulation, entropy is still going to go up in the future of the simulation, rather than going down as the simulation returns precisely to ...
by doogly
Wed Mar 21, 2018 8:39 pm UTC
Forum: Science
Topic: Quantum Question
Replies: 110
Views: 11029

Re: Quantum Question

Yup. That's why chemistry is boring. Not quantum enough.
by doogly
Wed Mar 21, 2018 8:04 pm UTC
Forum: Science
Topic: Quantum Question
Replies: 110
Views: 11029

Re: Quantum Question

The paths of bomb shrapnel are not sensitive to quantum mechanics. Much more just classical mechanics. All you'd have to do is reverse time, yeah.
by doogly
Wed Mar 21, 2018 6:49 pm UTC
Forum: Science
Topic: Quantum Question
Replies: 110
Views: 11029

Re: Quantum Question

Naively, it seems to me that time's arrow is a result of the third law and the uncertainty principle, and as such, is a macroscopic thing. Consider an explosion; a classical case of increasing entropy. During the explosion (like at most any other time), the future is likely to be more disordered. J...
by doogly
Mon Mar 19, 2018 2:15 am UTC
Forum: Science
Topic: Quantum Question
Replies: 110
Views: 11029

Re: Quantum Question

You are asking a question about a single particle quantum state in the first sentence, and the state of the universe in the second, so could you connect some dots?
by doogly
Mon Mar 19, 2018 2:14 am UTC
Forum: Science
Topic: Radioactive Decay
Replies: 27
Views: 4633

Re: Radioactive Decay

Right. So things aren't really particles or waves, they're fields. Much better.
by doogly
Thu Mar 15, 2018 6:47 pm UTC
Forum: Science
Topic: Quantum Question
Replies: 110
Views: 11029

Re: Quantum Question

But states are not localized, so there isn't any way for anything to be nonlocal about what happens. The operators, which are localized, do not behave weirdly at all. That is, they all obey [A,B]=0 when A and B are acausal.
by doogly
Thu Mar 15, 2018 3:57 pm UTC
Forum: Science
Topic: Quantum Question
Replies: 110
Views: 11029

Re: Quantum Question

Only if you've been temporarily confused by Schrodinger into thinking that this psi(x) business is meaningful. If you live your life classically caring about observables, and then quantum mechanically caring about observable operators, then your life is seamless and good. We just seem to think that ...
by doogly
Thu Mar 15, 2018 2:37 pm UTC
Forum: Science
Topic: Quantum Question
Replies: 110
Views: 11029

Re: Quantum Question

Violations of special relativity are spooky.
by doogly
Thu Mar 15, 2018 12:46 pm UTC
Forum: Science
Topic: Quantum Question
Replies: 110
Views: 11029

Re: Quantum Question

Entanglement is not actually spooky. Einstein described it that way, but Einstein is not correct. There are no violations of special relativity or causality in quantum mechanics. If you instead wanted to model what is happening with a backwards propagating super determining, the violence you have do...
by doogly
Thu Mar 15, 2018 12:26 pm UTC
Forum: Fictional Science
Topic: Yet another FTL question...
Replies: 35
Views: 4670

Re: Yet another FTL question...

The starting point for all SR derivations is just "the speed of light is the same for all observers."
by doogly
Wed Mar 14, 2018 8:23 pm UTC
Forum: Science
Topic: Physics and Photography
Replies: 4
Views: 1264

Re: Physics and Photography

Is not s_2 very knowable by cameras?
by doogly
Thu Mar 08, 2018 10:34 pm UTC
Forum: Science
Topic: Science-based what-if questions
Replies: 608
Views: 76065

Re: Science-based what-if questions

That is not a black hole. Black holes are real things, with real properties, and they are not like this. I am not trying to be some kill joy here. I think if you think about things like black holes, you will not lack for joy. They are pretty great. I promise. But maybe I am also kind of bitter and m...
by doogly
Thu Mar 08, 2018 4:59 pm UTC
Forum: Science
Topic: Science-based what-if questions
Replies: 608
Views: 76065

Re: Science-based what-if questions

What do you think "a giant quantum particle" means, and how do you think quantum field theory would represent this?
by doogly
Wed Mar 07, 2018 6:12 pm UTC
Forum: Science
Topic: Science-based what-if questions
Replies: 608
Views: 76065

Re: Science-based what-if questions

What, no, don't do "by the quantum field theory." QFT has nothing to do with this. You are postulating some non physical nonsense, there are no conclusions that QFT would have about it. It would just let you do your QFT in the rest of the world with some weird boundary conditions on a weir...
by doogly
Tue Mar 06, 2018 2:42 pm UTC
Forum: General
Topic: Teachers? (advice needed)
Replies: 8
Views: 2252

Re: Teachers? (advice needed)

What you need for licensing depends deeply on which state (and country) you want to teach in, and whether you care public or private. Do you know?
by doogly
Mon Mar 05, 2018 3:23 pm UTC
Forum: Science
Topic: Science-based what-if questions
Replies: 608
Views: 76065

Re: Science-based what-if questions

Let's say I am made of cells. What holds my cells together? Electromagnetism. If my skin encounters something that has an edge which eliminates the functioning of electromagnetism, it will rip through me. And you are postulating an object which occupies space and obviates electromagnetism. So it is ...
by doogly
Mon Mar 05, 2018 2:59 pm UTC
Forum: Science
Topic: Science-based what-if questions
Replies: 608
Views: 76065

Re: Science-based what-if questions

It already is infinitely sharp. It can cleave through physical reality.

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