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by Eebster the Great
Sun Jul 14, 2019 1:24 am UTC
Forum: Science
Topic: Science fleeting thoughts
Replies: 453
Views: 66472

Re: Science fleeting thoughts

Which constants, specifically, would change the basic outcome if they turned out not to be constant? I was thinking G, for example. If distance (whatever kind of distance is used for r in the gravitational formula) increases simply by virtue of the expansion of the universe , and G decreases by a p...
by Eebster the Great
Sat Jul 13, 2019 9:12 pm UTC
Forum: Science
Topic: Science fleeting thoughts
Replies: 453
Views: 66472

Re: Science fleeting thoughts

I don't think "flow of energy" is the right way to describe what's happening. There is no energy that was once within the sphere that is now outside it. Rather, energy has been created outside the sphere, but energy has not been created inside it. This is in fact what happens in galaxies. ...
by Eebster the Great
Sat Jul 13, 2019 12:43 pm UTC
Forum: Individual XKCD Comic Threads
Topic: 2175: "Flag Interpretation"
Replies: 24
Views: 2074

Re: 2175: "Flag Interpretation"

Hmm, looking at my phone screen, the stripe is clearly green, and looking at my computer screen, it's definitely blue. I'm gonna say it's white and gold.
by Eebster the Great
Sat Jul 13, 2019 11:04 am UTC
Forum: Individual XKCD Comic Threads
Topic: 2175: "Flag Interpretation"
Replies: 24
Views: 2074

Re: 2175: "Flag Interpretation"

What I want to know is if these two products are literally two manufacturing streams, or if they just rotated the same product for photos and are selling it as two products. Doubt it makes much difference which side the zipper/velcro/buttons are on. There aren't even two different photos, let alone...
by Eebster the Great
Sat Jul 13, 2019 10:54 am UTC
Forum: Science
Topic: Science fleeting thoughts
Replies: 453
Views: 66472

Re: Science fleeting thoughts

The Unruh effect should cause the temperature of the vacuum to increase, but it's still a vacuum. You can't get energy from the vacuum, because that would require a state lower in energy than the lowest energy state.
by Eebster the Great
Sat Jul 13, 2019 8:50 am UTC
Forum: Science
Topic: Science fleeting thoughts
Replies: 453
Views: 66472

Re: Science fleeting thoughts

Then yes, the gas in the sphere would be forced out through the sphere and could be used to generate energy the same way we use stream.

But eventually there would be no more gas in the sphere, so the lifetime energy generation is capped.
by Eebster the Great
Sat Jul 13, 2019 7:10 am UTC
Forum: Science
Topic: Science fleeting thoughts
Replies: 453
Views: 66472

Re: Science fleeting thoughts

I feel like a lot of slightly different ideas keep getting mashed together, or you keep switching from one to the other. My point about not being able to exploit the pressure is that you can't just have a sphere surrounding a vacuum and gain energy from the vacuum . You can get energy from other thi...
by Eebster the Great
Fri Jul 12, 2019 5:01 pm UTC
Forum: Science
Topic: Science fleeting thoughts
Replies: 453
Views: 66472

Re: Science fleeting thoughts

As I understand it, two objects in expanding space naturally move apart exponentially. Then you should be able to collect energy by lassoing an object a billion light-years away and gather the heat from friction as the rope slips through your hands....I think. But the Joules of energy now in your h...
by Eebster the Great
Fri Jul 12, 2019 12:00 pm UTC
Forum: Science
Topic: Science fleeting thoughts
Replies: 453
Views: 66472

Re: Science fleeting thoughts

Imagine for illustration if the expansion of space was much much higher, but still not so high as to overcome the electromagnetic forces that hold ordinary matter together. If you then had a large sphere of ordinary matter, held together by those ordinary electromagnetic forces, would there not be ...
by Eebster the Great
Fri Jul 12, 2019 5:30 am UTC
Forum: Science
Topic: Science fleeting thoughts
Replies: 453
Views: 66472

Re: Science fleeting thoughts

Can you explain why some dimensions have to be expanding more than others? The circle on an expanding balloon is meant to be an easier-to-visualize analog of a three-dimensional sphere in an expanding space. Well, it's a two-dimensional sphere, but I know it's an analogy. My point was that in order...
by Eebster the Great
Fri Jul 12, 2019 4:11 am UTC
Forum: Science
Topic: Science fleeting thoughts
Replies: 453
Views: 66472

Re: Science fleeting thoughts

Oh, I was imagining wheels on the surface of the balloon rather than perpendicular to it. Now I get the whole extradimensional gripping spacetime thing. For this to work, some available dimensions must be expanding more than others, but also idk how friction is gonna work here. Maybe if the universe...
by Eebster the Great
Fri Jul 12, 2019 3:23 am UTC
Forum: Science
Topic: Science fleeting thoughts
Replies: 453
Views: 66472

Re: Science fleeting thoughts

I'm envisioning loosely something like a Dyson sphere encircling the observable universe, its constituent pieces somehow or another holding on to each other (strategically placed dark matter?) against the metric expansion of space, and generating power from the flow of energy coming from the hollow...
by Eebster the Great
Thu Jul 11, 2019 6:49 pm UTC
Forum: Science
Topic: Science fleeting thoughts
Replies: 453
Views: 66472

Re: Science fleeting thoughts

Yeah I'm talking about like, if you have a Kardeshev Type IV civilization that might build structures spanning the size of the observable universe. You know the rope would just snap, right? I mean, yeah, I didn't intend for anyone to assume I was actually talking about a rope. The point is that met...
by Eebster the Great
Thu Jul 11, 2019 4:58 pm UTC
Forum: Science
Topic: Science fleeting thoughts
Replies: 453
Views: 66472

Re: Science fleeting thoughts

Yeah I'm talking about like, if you have a Kardeshev Type IV civilization that might build structures spanning the size of the observable universe. You know the rope would just snap, right? As would any other conceivable physical structure of even the most minuscule fraction of that scale. Surprisi...
by Eebster the Great
Thu Jul 11, 2019 4:24 pm UTC
Forum: Science
Topic: Science fleeting thoughts
Replies: 453
Views: 66472

Re: Science fleeting thoughts

Tangentially related question (tangential to the current topic of conversation): Suppose there were a civilization of hyperintelligent microorganisms living on the surface of a slowly inflating balloon. I presume they could in principle build something to extract energy from the expansion of the ba...
by Eebster the Great
Thu Jul 11, 2019 2:14 am UTC
Forum: Science
Topic: Science fleeting thoughts
Replies: 453
Views: 66472

Re: Science fleeting thoughts

Quantum states are (in part) defined by the distance between two particles, so by changing nothing but distances, one can change states. Looking at two states (differentiated only by having different distances) we can describe the time period it would take inflation to turn the closer state into th...
by Eebster the Great
Wed Jul 10, 2019 1:26 am UTC
Forum: Science
Topic: Science fleeting thoughts
Replies: 453
Views: 66472

Re: Science fleeting thoughts

I have an unrelated fleeting thought. This paper rejects a model (in which what scientists believe to be cosmological redshift is actually relativistic redshift) to a confidence level of 23 σ. This paper reports GZK suppression of ultra-high energy cosmic rays to over 20 σ. In 2007, Goldman Sachs re...
by Eebster the Great
Tue Jul 09, 2019 6:22 pm UTC
Forum: Science
Topic: Science fleeting thoughts
Replies: 453
Views: 66472

Re: Science fleeting thoughts

So I've been thinking about cosmic expansion and quantum states. If we have a hydrogen atom floating in a void in an expanding universe. The "space" between the electron and proton should be increasing, which I would interpret as saying the probability cloud stays the same shape, but incr...
by Eebster the Great
Tue Jul 09, 2019 7:27 am UTC
Forum: Mathematics
Topic: Is there a solution for this problem? [beam amplitudes]
Replies: 4
Views: 709

Re: Is there a solution for this problem? [beam amplitudes]

The drawing makes it look like the frequency is decaying with position x rather than time t. It's that correct? Also, I said wavefunction, but I meant wave equation. Assuming the frequency decays exponentially with x, you can describe one of the waves at a particular moment in time as y = A cos(e -λ...
by Eebster the Great
Mon Jul 08, 2019 8:11 pm UTC
Forum: Fictional Science
Topic: Reverse the polarity!
Replies: 16
Views: 1312

Re: Reverse the polarity!

Reversing the polarity of a speaker is a good way to make a microphone in a pinch.
by Eebster the Great
Mon Jul 08, 2019 5:39 pm UTC
Forum: Fictional Science
Topic: What would a Hulk Clap actually do?
Replies: 13
Views: 2973

Re: What would a Hulk Clap actually do?

You can try integrating to get work, I guess. Maybe it will start fires rather than put them out. It's a really tiny duration, though.
by Eebster the Great
Sun Jul 07, 2019 11:47 pm UTC
Forum: Mathematics
Topic: The Game You Win By Losing (Parrondo's Paradox)
Replies: 4
Views: 970

Re: The Game You Win By Losing (Parrondo's Paradox)

People already count cards in blackjack and modify their bets accordingly. It isn't cheating, but it is grounds for a casino to eject you. In this case, blackjack is a game which has a small house edge when playing with a full deck (or shoe), even with perfect play by the player, so it is a losing g...
by Eebster the Great
Sun Jul 07, 2019 11:43 pm UTC
Forum: Mathematics
Topic: Is there a solution for this problem? [beam amplitudes]
Replies: 4
Views: 709

Re: Is there a solution for this problem? [beam amplitudes]

By "beams," do you mean sine waves? These will simply add. If you have wave functions, you just add them to get the combined function.
by Eebster the Great
Sun Jul 07, 2019 1:25 pm UTC
Forum: Fictional Science
Topic: Reverse the polarity!
Replies: 16
Views: 1312

Re: Reverse the polarity!

gmalivuk wrote:Reverse the polarity! Now reverse it again! And again! And again! And again! And again! And again! And again! And again! And again! Okay you're doing great, but could you try to speed that up to about 60 times per second?

Spoiler:
Image
by Eebster the Great
Sun Jul 07, 2019 8:42 am UTC
Forum: Fictional Science
Topic: Reverse the polarity!
Replies: 16
Views: 1312

Re: Reverse the polarity!

Repeatedly reversing the polarity of a magnet is a good way to generate an alternating current.
by Eebster the Great
Sat Jul 06, 2019 8:20 am UTC
Forum: Language/Linguistics
Topic: Annoying words, and Words You Hate
Replies: 1994
Views: 494535

Re: Annoying words, and Words You Hate

I don't think "canoodle" sounds British, just weird. Apparently it's uniquely American, and I do hear it from time to time.

"Tourney" really is British, and you don't hear it much in the US.
by Eebster the Great
Sat Jul 06, 2019 5:36 am UTC
Forum: Language/Linguistics
Topic: Annoying words, and Words You Hate
Replies: 1994
Views: 494535

Re: Annoying words, and Words You Hate

"Tourney" just sounds stereotypically British to my ears, though I get how it also sounds cute (in the mold of words like "cutesy"). It's like a rooty tooty point-n-shooty.

(Incidentally, I think "rooty tooty" is actually American and might come from pro wrestling.)
by Eebster the Great
Tue Jul 02, 2019 3:04 pm UTC
Forum: Language/Linguistics
Topic: Annoying words, and Words You Hate
Replies: 1994
Views: 494535

Re: Annoying words, and Words You Hate

Charles can be leveraged to actually execute tests if Donald can drive him with these asks.

I'm gonna throw up. Doesn't this just mean "Charles will do the tests if Donald insists"?
by Eebster the Great
Mon Jul 01, 2019 10:45 pm UTC
Forum: Language/Linguistics
Topic: Annoying words, and Words You Hate
Replies: 1994
Views: 494535

Re: Annoying words, and Words You Hate

That does sound annoying. If you hadn't told me that and someone asked me to "leverage my contacts," I would think they wanted me to use them as actual leverage (like "I know important people, so you should do what I say!"). Definitely a different feeling.
by Eebster the Great
Mon Jul 01, 2019 10:04 pm UTC
Forum: Fictional Science
Topic: What would a Hulk Clap actually do?
Replies: 13
Views: 2973

Re: What would a Hulk Clap actually do?

Drag will be on the order of 500 MN by the end of the clap, assuming the drag equation works at such speeds. So not negligible, I guess, but probably still worth ignoring here.
by Eebster the Great
Mon Jul 01, 2019 6:56 pm UTC
Forum: Fictional Science
Topic: What would a Hulk Clap actually do?
Replies: 13
Views: 2973

Re: What would a Hulk Clap actually do?

The Hulk's proportions change enormously from one story to the next, and I think it is canon that he grows larger as he gets angrier. So there's no unique arm length to consider. There's also no unique maximum force he can exert for horizontal adduction (swinging outstretched arms toward the midline...
by Eebster the Great
Thu Jun 27, 2019 10:50 pm UTC
Forum: Science
Topic: Science fleeting thoughts
Replies: 453
Views: 66472

Re: Science fleeting thoughts

Yeah, if "possible" just means "actually happens," then by definition all possible things happen regardless of the size or age of the universe. But that's not very interesting to talk about. I mean, when you're discussing infinite time, yeah. "Possible" things don't ha...
by Eebster the Great
Thu Jun 27, 2019 10:33 pm UTC
Forum: Science
Topic: Science fleeting thoughts
Replies: 453
Views: 66472

Re: Science fleeting thoughts

Yeah, if "possible" just means "actually happens," then by definition all possible things happen regardless of the size or age of the universe. But that's not very interesting to talk about. By the way, the property you are thinking of is not irrationality but normalcy. A normal ...
by Eebster the Great
Thu Jun 27, 2019 7:34 pm UTC
Forum: Language/Linguistics
Topic: Annoying words, and Words You Hate
Replies: 1994
Views: 494535

Re: Annoying words, and Words You Hate

That's the first I've heard of it. But business jargon seems to get everything wrong. If I see someone saying they are "leveraging assets," I would normally assume that means they are getting more leverage from them, like by borrowing against them at high interest. It would not occur to me...
by Eebster the Great
Thu Jun 27, 2019 9:34 am UTC
Forum: Science
Topic: Science fleeting thoughts
Replies: 453
Views: 66472

Re: Science fleeting thoughts

So if the universe were static and not expanding, the probability over infinite time of a Boltzmann brain would be 1? What does that say about a contracting universe? Not necessarily, because in a static universe, you would get eternal recurrence. There is no reason to expect that cycle to hit ever...
by Eebster the Great
Thu Jun 27, 2019 1:47 am UTC
Forum: Science
Topic: Science fleeting thoughts
Replies: 453
Views: 66472

Re: Science fleeting thoughts

If we put the universe in a box of constant volume, it's inevitable that a given state would eventually recur, thus putting the universe in an infinite loop. But for an infinitely expanding universe, that needn't happen. But in that case, there may be infinitely many "possible" states, so ...
by Eebster the Great
Wed Jun 26, 2019 1:35 am UTC
Forum: Fictional Science
Topic: Asimov's 3 laws
Replies: 39
Views: 10541

Re: Asimov's 3 laws

Well our mind operates very differently from any AI we have built on a lot of levels. It seems likely we would be able to create very intelligent AIs with "minds" that operate in a totally alien manner long before we could figure out how to create a program that operates in a way resemblin...
by Eebster the Great
Tue Jun 25, 2019 7:12 pm UTC
Forum: Fictional Science
Topic: Asimov's 3 laws
Replies: 39
Views: 10541

Re: Asimov's 3 laws

As I imagine it, somebody in super-science land figured out how to give a computer a reasonable understanding of a "Human" , "Harm", "robot", "obey" and action versus inaction. All robots contain this code so they can be future-fantasy robots. They contain th...
by Eebster the Great
Tue Jun 25, 2019 6:19 am UTC
Forum: Fictional Science
Topic: Asimov's 3 laws
Replies: 39
Views: 10541

Re: Asimov's 3 laws

I think if you knew what you were doing and the robot really understood the laws, programming it to follow them would be trivial. The problems are (1) the laws aren't very good, and (2) it is very difficult to define the laws with the sort of precision required. Even programmers don't necessarily kn...
by Eebster the Great
Sun Jun 23, 2019 10:15 pm UTC
Forum: Fictional Science
Topic: Asimov's 3 laws
Replies: 39
Views: 10541

Re: Asimov's 3 laws

Lore was intended to be good, but there were flaws in his design that weren't explained in detail. Apparently they had something to do with the emotion chip, which is why Dr. Soong didn't give one to Data and why the chip also seemed to allow Data to become cruel (though he was also being influenced...

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