Search found 3464 matches

by Eebster the Great
Mon Aug 12, 2019 7:43 pm UTC
Forum: Language/Linguistics
Topic: Longest word with only 3 letters
Replies: 43
Views: 31985

Re: Longest word with only 3 letters

Wiktionary lists "bookkeep" as a verb, an alternate spelling of "book-keep," meaning to keep books as an accountant. I can't find a dictionary listing it as a noun analogous to "barkeep," but that doesn't necessarily mean the noun doesn't exist.
by Eebster the Great
Mon Aug 12, 2019 3:38 pm UTC
Forum: Mathematics
Topic: questions about mathematical isomer ?
Replies: 1
Views: 197

Re: questions about mathematical isomer ?

There are going to be a lot. C 5 H 9 Br for instance has 1-bromo1-pentene, 1-bromo-2-pentene, ...-3-ene, ...-4-ene, 2-bromo-1-pentene, ...-2-ene, ...-3-ene, ...-4-ene, ...-5-ene, 3-bromo1-pentene, ...-2-ene, and ...-3-ene just among the substituted n -pentenes. But you also have bromocyclopentane, a...
by Eebster the Great
Mon Aug 12, 2019 4:26 am UTC
Forum: Science
Topic: The act of Observation/Measurement is a request of quantum wave information to Spacetime
Replies: 27
Views: 795

Re: The act of Observation/Measurement is a request of quantum wave information to Spacetime

If it's all decided in advance, where does human observation pulling things into spacetime come into play? Why wasn't it always in spacetime?
by Eebster the Great
Sun Aug 11, 2019 9:28 pm UTC
Forum: Science
Topic: The act of Observation/Measurement is a request of quantum wave information to Spacetime
Replies: 27
Views: 795

Re: The act of Observation/Measurement is a request of quantum wave information to Spacetime

You say that the observation is what pulls the particle into spacetime causing it to only go through one slit, not both. But by the time any human observes the particle, it has already passed the slits long ago. Is my act of observation changing the past? Or is it, as scientists say, the detector it...
by Eebster the Great
Thu Aug 08, 2019 8:23 pm UTC
Forum: Science
Topic: Science fleeting thoughts
Replies: 445
Views: 65443

Re: Science fleeting thoughts

As you fall into a black hole, your acceleration does not approach infinity from any perspective, at least not until you reach the singularity. The gravitational redshift does. Hawking radiation is not a result of this infinite redshift being cancelled out.
by Eebster the Great
Wed Aug 07, 2019 10:58 pm UTC
Forum: Science
Topic: Science fleeting thoughts
Replies: 445
Views: 65443

Re: Science fleeting thoughts

Mathematically speaking, in the limit as the source of light reaches the horizon, the photon redshifts to 0 frequency. This is one way of looking at the reason black holes are black.
by Eebster the Great
Wed Aug 07, 2019 4:42 am UTC
Forum: Language/Linguistics
Topic: Language fleeting thoughts
Replies: 169
Views: 55157

Re: Language fleeting thoughts

Moreover, /nɪtʃ/ is apparently the older pronunciation in English by centuries. But it comes from French, and surely the French word would have been pronounced closer to /ni:ʃ/. The shift toward /ni:ʃ/ makes sense as a form of correction or hypercorrection to the French pronunciation, but why was i...
by Eebster the Great
Wed Aug 07, 2019 3:23 am UTC
Forum: Mathematics
Topic: Do all Equations have Solutions?
Replies: 12
Views: 558

Re: Do all Equations have Solutions?

I'm not sure how many X rays you need to change that byte in the various servers from = to >, but surely there is such a number.
by Eebster the Great
Tue Aug 06, 2019 10:56 pm UTC
Forum: Language/Linguistics
Topic: Language fleeting thoughts
Replies: 169
Views: 55157

Re: Language fleeting thoughts

Why is "niche" commonly pronounced /nɪtʃ/ in America? This is the way I say the word, and although it is losing ground, most sources online say this is still the most common pronunciation in the U.S., even though /ni:ʃ/ has beaten it out in most other places. Moreover, /nɪtʃ/ is apparently...
by Eebster the Great
Tue Aug 06, 2019 8:48 pm UTC
Forum: Mathematics
Topic: Do all Equations have Solutions?
Replies: 12
Views: 558

Re: Do all Equations have Solutions?

It also depends on what you mean by a "number." Usually the things we think of as numbers have particular properties like total order, which would mean some equations would never have solutions. For instance, we rarely consider a matrix or a function a "number." If we allow these...
by Eebster the Great
Wed Jul 31, 2019 4:13 am UTC
Forum: Language/Linguistics
Topic: Why is it translated from THE Greek
Replies: 8
Views: 695

Re: Why is it translated from THE Greek

Right, it wasn't translated from just any Geek, but the Greek it was written in. It's like saying you've read the Koran in the original Arabic.
by Eebster the Great
Tue Jul 30, 2019 4:58 pm UTC
Forum: Science
Topic: Science fleeting thoughts
Replies: 445
Views: 65443

Re: Science fleeting thoughts

For most people, unless they are active in that particular field, the wonders of science are taken on faith. You learn about fusion in school, but you never actually build a fusion reactor. Other people do, and you read about it. Ditto microbes, space travel, biodiversity, and even the existence of...
by Eebster the Great
Tue Jul 30, 2019 1:52 am UTC
Forum: Science
Topic: Science fleeting thoughts
Replies: 445
Views: 65443

Re: Science fleeting thoughts

All I can think is that such severe deficit of perception ought to have significant overt symptoms in day-to-day life, such as inability to tell distance or negotiate corners. They'd be total trainwrecks. To not understand perspective is to not know that things appear larger with proximity. If you ...
by Eebster the Great
Mon Jul 29, 2019 10:34 am UTC
Forum: Science
Topic: Science fleeting thoughts
Replies: 445
Views: 65443

Re: Science fleeting thoughts

There is a degree of some sort of ineptitude in there though, maybe spatial reasoning. People don't usually start out thinking the world is flat. They start out with a variety of other conspiracy theories that they believe, while aware of others that they find silly. But they watch some videos by co...
by Eebster the Great
Mon Jul 29, 2019 3:39 am UTC
Forum: Science
Topic: Science fleeting thoughts
Replies: 445
Views: 65443

Re: Science fleeting thoughts

Flat Earther proof that all manifolds are planes: looks flat = is flat.
by Eebster the Great
Sun Jul 28, 2019 3:16 am UTC
Forum: Science
Topic: Science fleeting thoughts
Replies: 445
Views: 65443

Re: Science fleeting thoughts

Angles and distances are geometrical, not topological. The topological difference between a sphere and a disk is closure. The disk is open because it has a boundary, but the sphere is closed because it does not. Both are compact, simply connected 2-manifolds. If the disk were also closed, it would b...
by Eebster the Great
Wed Jul 24, 2019 2:47 am UTC
Forum: Science
Topic: Science fleeting thoughts
Replies: 445
Views: 65443

Re: Science fleeting thoughts

"Tortuous" has always sounded too similar to "Torturous" for my liking.
by Eebster the Great
Tue Jul 23, 2019 7:32 pm UTC
Forum: Science
Topic: Science fleeting thoughts
Replies: 445
Views: 65443

Re: Science fleeting thoughts

"Donut" is not an actual topological term. "Torus" is the word you're looking for. Surfaces of humans have a genus much greater than 1 (lots of little holes), but humans themselves are 3-dimensional, so it doesn't make much sense to call us surfaces anyway. It does not matter if ...
by Eebster the Great
Fri Jul 19, 2019 11:08 pm UTC
Forum: Mathematics
Topic: Terminology: two numbers where one is a multiple of the other
Replies: 14
Views: 1495

Re: Terminology: two numbers where one is a multiple of the other

I mean, maybe. Or they'll just understand from context? I would naturally assume the author was just leaving out what they were divisible by, but that they were divisible by the same thing. So like, 4 and 8 are "divisible by 2," but maybe the author just said they were "divisible&quo...
by Eebster the Great
Thu Jul 18, 2019 4:50 pm UTC
Forum: Mathematics
Topic: Terminology: two numbers where one is a multiple of the other
Replies: 14
Views: 1495

Re: Terminology: two numbers where one is a multiple of the other

If you say "a and b are divisible," your audience will ask, "divisible by what?"
by Eebster the Great
Thu Jul 18, 2019 3:49 pm UTC
Forum: Mathematics
Topic: Terminology: two numbers where one is a multiple of the other
Replies: 14
Views: 1495

Re: Terminology: two numbers where one is a multiple of the other

I think the answer to the OP is simply "no," or maybe "not yet." Similar terms exist like "relatively composite" for two integers that share a common factor, but there is not any word for two integers one of which is a multiple of the other.
by Eebster the Great
Tue Jul 16, 2019 12:06 pm UTC
Forum: Science
Topic: Science fleeting thoughts
Replies: 445
Views: 65443

Re: Science fleeting thoughts

There is usable energy in the recession of the galaxies, but the expansion of space itself only increases the amount of vacuum energy. Just because there is more energy doesn't mean we can do anything with it. It's like increasing the temperature of both of two objects in thermal equilibrium equally...
by Eebster the Great
Sun Jul 14, 2019 1:24 am UTC
Forum: Science
Topic: Science fleeting thoughts
Replies: 445
Views: 65443

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: 445
Views: 65443

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: 1921

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: 1921

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: 445
Views: 65443

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: 445
Views: 65443

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: 445
Views: 65443

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: 445
Views: 65443

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: 445
Views: 65443

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: 445
Views: 65443

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: 445
Views: 65443

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: 445
Views: 65443

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: 445
Views: 65443

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: 445
Views: 65443

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: 445
Views: 65443

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: 445
Views: 65443

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: 445
Views: 65443

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: 445
Views: 65443

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...

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