Search found 4964 matches

by doogly
Thu Mar 22, 2018 3:33 am UTC
Forum: Science
Topic: Quantum Question
Replies: 110
Views: 12550

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: 12550

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: 12550

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: 12550

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: 12550

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: 12550

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: 5103

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: 12550

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: 12550

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: 12550

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: 12550

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: 5244

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: 1504

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: 615
Views: 80939

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: 615
Views: 80939

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: 615
Views: 80939

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: 2592

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: 615
Views: 80939

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: 615
Views: 80939

Re: Science-based what-if questions

It already is infinitely sharp. It can cleave through physical reality.
by doogly
Mon Mar 05, 2018 2:09 pm UTC
Forum: Mathematics
Topic: My take on Godel's incompleteness theorems
Replies: 42
Views: 6082

Re: My take on Godel's incompleteness theorems

While true that Godel's theorems (all of them really, not even just incompleteness, his entire career!) are results about mathematical systems, this isn't exactly news to anyone. If you'd like to talk about empirical sciences, they are up one directory and down a row. These are both pretty neat fiel...
by doogly
Fri Mar 02, 2018 2:11 pm UTC
Forum: Food
Topic: dubsola's Chilli
Replies: 20
Views: 6658

Re: dubsola's Chilli

Oh yeah so bumping with some updates, the shine has worn off of the cocoa powder and chicory. The paprika, it's important to use the smoked paprika. That guy is excellent. And use more cumin. Also I was certainly not neglecting garlic powder in 2016, but I did neglect to mention it explicitly. Some ...
by doogly
Thu Mar 01, 2018 8:57 pm UTC
Forum: Mathematics
Topic: Decitauths
Replies: 16
Views: 2692

Re: Decitauths

babylon > france
by doogly
Thu Mar 01, 2018 2:23 pm UTC
Forum: Science
Topic: Speed of gravity.
Replies: 36
Views: 5774

Re: Speed of gravity.

Your first two statements about Newtonian gravity are incorrect.
by doogly
Tue Feb 27, 2018 1:13 pm UTC
Forum: General
Topic: Why does XKCD not have ads?
Replies: 25
Views: 3009

Re: Why does XKCD not have ads?

Capitalism is the wooooooooorst
by doogly
Sun Feb 25, 2018 2:21 am UTC
Forum: Mathematics
Topic: Decitauths
Replies: 16
Views: 2692

Re: Decitauths

Pfhorrest wrote:
Flumble wrote:
Pfhorrest wrote:conveniently-factorable

Hmm, how is τ conveniently factored?

I meant that 360 is conventiently factorable.

That is why the Babylonians picked it. They made sense, not like those Frenchies with their metric system.
by doogly
Sat Feb 24, 2018 1:37 am UTC
Forum: Mathematics
Topic: Decitauths
Replies: 16
Views: 2692

Re: Decitauths

Tau is dumb.
by doogly
Fri Feb 23, 2018 1:37 am UTC
Forum: Mathematics
Topic: Prove that dim Spec A = dim Spec A/p + dim Spec A_p
Replies: 2
Views: 1316

Re: Prove that dim Spec A = dim Spec A/p + dim Spec A_p

This stinks like something with a two line proof using categories.
by doogly
Tue Feb 20, 2018 1:26 pm UTC
Forum: General
Topic: Actual Drnukenness!
Replies: 1358
Views: 297421

Re: Actual Drnukenness!

Whistlepig is even weirder, because their logo has a pig, instead of a groundhog, and a groundhog is a whistlepig.
by doogly
Tue Feb 20, 2018 1:24 pm UTC
Forum: Comics/Graphic Novels
Topic: Gunnerkrigg Court
Replies: 153
Views: 46855

Re: Gunnerkrigg Court

Spoiler:
Right, the question is whether "Neck in mouth" is part of the plan. I thought not so much, but I will give Coyote significant props if he planned this.
by doogly
Tue Feb 20, 2018 1:02 pm UTC
Forum: Comics/Graphic Novels
Topic: Gunnerkrigg Court
Replies: 153
Views: 46855

Re: Gunnerkrigg Court

Spoiler:
One of the comrades was lobbying hard for part of a plan, esp with Chekhov's Dead Goose. But I was very surprised.
by doogly
Tue Feb 20, 2018 2:34 am UTC
Forum: Comics/Graphic Novels
Topic: Gunnerkrigg Court
Replies: 153
Views: 46855

Re: Gunnerkrigg Court

oh my word
by doogly
Fri Feb 16, 2018 8:02 pm UTC
Forum: Gaming
Topic: Final Fantasy Omnithread - All FF, all the time.
Replies: 1158
Views: 205969

Re: Final Fantasy Omnithread - All FF, all the time.

6 is at the bottom of your list? is this a joke?
by doogly
Fri Feb 16, 2018 7:47 pm UTC
Forum: Science
Topic: Hardy-Weinberg Equilibrium Help
Replies: 10
Views: 2199

Re: Hardy-Weinberg Equilibrium Help

Strictly speaking, f(A) refers to the probabilities in the current generation and f(AA) refers to the probabilities in the next generation. This is because f(A) * f(A) is the chance two gametes carrying the allele A will be used to create an descendant. If every organism is AB, then f(AA) = 0.25 si...
by doogly
Thu Feb 15, 2018 4:34 pm UTC
Forum: Science
Topic: Hardy-Weinberg Equilibrium Help
Replies: 10
Views: 2199

Re: Hardy-Weinberg Equilibrium Help

Not a biologist, but from a probability perspective, the f(AA) = f(A)^2 assumes that getting the A allele from each parent are entirely independent events, otherwise you'd need to worry about A|A and A|B being different. The independence of these sounds like it requires the equilibrium.
by doogly
Wed Feb 14, 2018 7:37 pm UTC
Forum: Serious Business
Topic: Ideal immigration policy
Replies: 112
Views: 10711

Re: Ideal immigration policy

Ideal policy: lift the golden lamp.
by doogly
Sun Feb 11, 2018 3:26 am UTC
Forum: Science
Topic: Squat Physics
Replies: 3
Views: 1487

Re: Squat Physics

It may seem like the force should be the same because the weight is the same, but torque is very much the deciding factor with bar positioning.
by doogly
Fri Feb 09, 2018 2:37 pm UTC
Forum: Science
Topic: Science-based what-if questions
Replies: 615
Views: 80939

Re: Science-based what-if questions

The momentum of light is E/c. Force is dp/dt, or power/c. If you want your weight to be supported by the light, you need a power of weight*c. So under a terawatt, actually.

This is with only one coffee in me though, don't hold me to it.
by doogly
Fri Feb 09, 2018 2:37 am UTC
Forum: Music
Topic: Covers That Are Better Than The Originals
Replies: 294
Views: 119264

Re: Covers That Are Better Than The Originals

by doogly
Tue Feb 06, 2018 9:42 pm UTC
Forum: General
Topic: Thoughts for ships
Replies: 89986
Views: 7662644

Re: Thoughts for ships

And black dragons in D&D breathes acids. Yeah but that is cone shape, not cloud shape. This matters. Gotta get out that graph paper. That's the good shit. How about a dragon that just breathes out an immense amount of C0 2 blanketing a large area. Extremely unpleasant and jarring drowning feeli...
by doogly
Tue Feb 06, 2018 8:46 pm UTC
Forum: General
Topic: Thoughts for ships
Replies: 89986
Views: 7662644

Re: Thoughts for ships

The gas breathing dragons are green, and all metallic dragons.

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