Search found 2410 matches

by Eebster the Great
Mon Apr 17, 2017 1:05 am UTC
Forum: Fictional Science
Topic: Material with High Specific Heat
Replies: 12
Views: 2325

Re: Material with High Specific Heat

Quark-gluon plasma sounds pretty much ideal for this purpose.
by Eebster the Great
Thu Apr 13, 2017 5:30 am UTC
Forum: Science
Topic: Science-based what-if questions
Replies: 274
Views: 17111

Re: Science-based what-if questions

andykhang wrote:...I'm trying to build a house made entirely out of gold. I'm the Richard Dickinson, for fk sake, make a house that show it.

wat
by Eebster the Great
Wed Apr 12, 2017 9:38 pm UTC
Forum: Science
Topic: is projectile motion 3 dimensional or 2 dimensional?
Replies: 20
Views: 1422

Re: is projectile motion 3 dimensional or 2 dimensional?

Qaanol wrote:Pretty sure it’s one-dimensional, though depending on your universe that 1D path may be embedded in some other topology.

Only if the projectile is pointlike.
by Eebster the Great
Wed Apr 12, 2017 9:23 pm UTC
Forum: Science
Topic: Storing Nuclear Waste on the Moon
Replies: 57
Views: 4037

Re: Storing Nuclear Waste on the Moon

It could also explode on the launch pad. Launch abort system. Sure, I get that safety measures exist. So far, this system has fulfilled its purpose once. It has failed once. That's not a reassuring success rate. We know that the rate of failure of these systems in practice tends to be much higher t...
by Eebster the Great
Tue Apr 11, 2017 4:22 am UTC
Forum: Language/Linguistics
Topic: Regional Dialect and Idiolect Oddities (pronunciation)
Replies: 573
Views: 156495

Re: Regional Dialect and Idiolect Oddities (pronunciation)

I say /ˈɡɛt/ (rhymes with "set"), but there are quite a few people around here who say /ˈgɪt/ (rhymes with "sit"). I used to think it was a pen/pin merger thing, but now I believe it is entirely separate.
by Eebster the Great
Mon Apr 10, 2017 5:01 am UTC
Forum: Science
Topic: Science-based what-if questions
Replies: 274
Views: 17111

Re: How to build a golden house

Gold coins and jewelry often almost always contain other metals such as silver or nickel to increase durability, so similar alloys may work as a building material also. The thing is Andy, like buildings, jewelry and coins have to last a long time given the high cost of replacement. That's why you v...
by Eebster the Great
Sun Apr 09, 2017 3:14 am UTC
Forum: Science
Topic: Storing Nuclear Waste on the Moon
Replies: 57
Views: 4037

Re: Storing Nuclear Waste on the Moon

So you present the worst case scenario for waste leaking in a mine, but what about the worst case scenario of launching the waste into orbit? Like the launch vehicle exploding and spreading radiation over some otherwise populated area. Or the thing crashing into some watershed or other populated ar...
by Eebster the Great
Sat Apr 08, 2017 8:02 am UTC
Forum: Science
Topic: Build a small electric shock device
Replies: 12
Views: 11271

Re: Build a small electric shock device

Hi, I want to build a colossal electric shock device, I have 240 yottavolts available between two Reissner–Nordström black holes, in a decaying orbit in my front yard. I'm not sure if I should use ac or do. I would place electrodes on either side of the dipole and connect them to the electric shock ...
by Eebster the Great
Fri Apr 07, 2017 5:42 am UTC
Forum: Science
Topic: Smallest animal
Replies: 18
Views: 3344

Re: Smallest animal

Like Eebster says, restricting taxa doesn't get us round such obviously ridiculous examples so we have to look to other restrictions. In particular, you could identify any number of typical animal traits and require them; for instance requiring sexual reproduction would rule out the transmissible c...
by Eebster the Great
Thu Apr 06, 2017 8:19 am UTC
Forum: Science
Topic: Smallest animal
Replies: 18
Views: 3344

Re: Smallest animal

Also, "what is an animal?" is a surprisingly tricky question. I think all the organisms discussed so far are unquestionably animals. Was there something specific you had in mind? Similar things to what eSOANEM mentioned - single-celled dudes that are phylogeneticly within Animalia. That i...
by Eebster the Great
Thu Apr 06, 2017 8:10 am UTC
Forum: Language/Linguistics
Topic: Miscellaneous language questions
Replies: 361
Views: 25371

Re: Miscellaneous language questions

Ah yes, the famous aardvark skiing in a vacuum.
by Eebster the Great
Wed Apr 05, 2017 7:31 pm UTC
Forum: Science
Topic: Smallest animal
Replies: 18
Views: 3344

Re: Smallest animal

At some point the Wikipedia article on Stygotantulus was updated to reference this article about newly discovered species of crustaceans in the Tantulacus genus, with adult Tantulacus dieteri apparently only 85 μm long. That's surprisingly tiny, but the article ( researchgate pdf ) looks like it gi...
by Eebster the Great
Sun Apr 02, 2017 7:46 am UTC
Forum: Science
Topic: Storing Nuclear Waste on the Moon
Replies: 57
Views: 4037

Re: Storing Nuclear Waste on the Moon

SDK: I think that you have misunderstood my intentions. I was not arguing that nuclear power plants should not be built because its negative affects are too great. I was proposing a system designed to minimize the negatives affects of nuclear power. The problem with this is basically statistical. M...
by Eebster the Great
Sat Apr 01, 2017 6:39 pm UTC
Forum: Science
Topic: Miscellaneous Science Questions
Replies: 2835
Views: 517795

Re: RELATIVITY QUESTIONS! (and other common queries)

Or you make the song take twice as long instead of half as long. Well sure, there are lots of ways you could answer different questions than the one that was asked. Can anyone help me with a hypothetical time dilation question? I am merely suggesting he might not have known that the song will play ...
by Eebster the Great
Sat Apr 01, 2017 12:57 am UTC
Forum: Science
Topic: Miscellaneous Science Questions
Replies: 2835
Views: 517795

Re: RELATIVITY QUESTIONS! (and other common queries)

I think Eebster meant that the Doppler shift isn't a relativistic effect. Yes, this. Either you account for the Doppler shift, or you say there's no answer. Or you make the song take twice as long instead of half as long. After all, time is dilated, not contracted. In that case, the answer is: v = ...
by Eebster the Great
Wed Mar 29, 2017 7:13 am UTC
Forum: Science
Topic: Miscellaneous Science Questions
Replies: 2835
Views: 517795

Re: RELATIVITY QUESTIONS! (and other common queries)

The important difference is that the observer on Earth knows there will be a Doppler shift and can correct for it. But there is no "correcting for" time dilation, because it is correct.
by Eebster the Great
Wed Mar 29, 2017 12:02 am UTC
Forum: Science
Topic: Miscellaneous Science Questions
Replies: 2835
Views: 517795

Re: RELATIVITY QUESTIONS! (and other common queries)

doogly wrote:Whether it's gamma or lambda is relative to your orientation in the plane.

This. In my reference frame I wrote a γ, but it Terrell-rotated to λ.
by Eebster the Great
Tue Mar 28, 2017 6:09 pm UTC
Forum: Science
Topic: Miscellaneous Science Questions
Replies: 2835
Views: 517795

Re: RELATIVITY QUESTIONS! (and other common queries)

The factor is called λ (lambda) and is equal to (1- v ² / c ² ) -½ , where v is the speed and c is the speed of light in a vacuum. So for instance, if the moving twin has a speed of v = 4 / 5 c = 0.8 c , then λ = 5 / 3 ≈ 1.67. In that case, the song which seems 5 minutes long to the twin on the rock...
by Eebster the Great
Tue Mar 28, 2017 9:56 am UTC
Forum: Science
Topic: Smallest animal
Replies: 18
Views: 3344

Re: Smallest animal

If it's poor form to bump extremely old threads, a mod can just fork this to a new one. At some point the Wikipedia article on Stygotantulus was updated to reference this article about newly discovered species of crustaceans in the Tantulacus genus, with adult Tantulacus dieteri apparently only 85 μ...
by Eebster the Great
Tue Mar 28, 2017 6:29 am UTC
Forum: Science
Topic: Storing Nuclear Waste on the Moon
Replies: 57
Views: 4037

Re: Storing Nuclear Waste on the Moon

To everyone who suggested burying the waste somewhere: 20% of the worlds fresh water is in the Great Lakes basin*, 10% of the U.S. population depends on these lakes for fresh water*, and 84.87 million people live in a U.S. state of Canadian providence bordering the Great Lakes**. There are currentl...
by Eebster the Great
Mon Mar 27, 2017 4:35 am UTC
Forum: Science
Topic: Toothbrush, glasses, and clock
Replies: 15
Views: 1195

Re: Toothbrush, glasses, and clock

I've observed the same thing. It is extremely pronounced for certain LCD clocks. It can actually happen even when my glasses are off, but it is an order of magnitude less significant. I think the glasses are relevant because the comparatively subtle vibration of my face makes my glasses move a longe...
by Eebster the Great
Sun Mar 26, 2017 6:25 pm UTC
Forum: Science
Topic: Storing Nuclear Waste on the Moon
Replies: 57
Views: 4037

Re: Storing Nuclear Waste on the Moon

It still seems like an inferior solution to simply burying the waste in a mountain. Apparently that is also politically difficult.
by Eebster the Great
Fri Mar 24, 2017 5:16 pm UTC
Forum: Science
Topic: Is All Evidence Statistical?
Replies: 22
Views: 1489

Re: Is All Evidence Statistical?

Actually, Popper alleged that corroborating a theory by failing to falsify it did not increase the probability that it was true. He was not after truth. He was just after effective theories. The reason was that the inductive validation model used by positivists relies on the fallacy of affirming the...
by Eebster the Great
Fri Mar 24, 2017 3:20 am UTC
Forum: Science
Topic: Is All Evidence Statistical?
Replies: 22
Views: 1489

Re: Is All Evidence Statistical?

The reference I heard was basically equivalent. It's hard to draw a bright line between hot and cold weather, but we can still all agree that 0 C is cold and 40 C is hot. It's useful for lots of cases. For instance, there was no "first human," even though there are humans now, there was a ...
by Eebster the Great
Thu Mar 23, 2017 6:02 am UTC
Forum: Science
Topic: Science-based what-if questions
Replies: 274
Views: 17111

Re: Science-based what-if questions

That would effectively be the same as a transplant. Ignoring the problems getting the two circulatory systems to function together you'd run into tissue rejection. It's also hard to get blood types that match up exactly - you've got all the random ones like Kell and Duffy that start being a problem...
by Eebster the Great
Mon Mar 20, 2017 2:24 am UTC
Forum: Science
Topic: The Reverse of how colors work: how would it look?
Replies: 6
Views: 1079

Re: The Reverse of how colors work: how would it look?

The "red object" in your drawing looks magenta to me.
by Eebster the Great
Fri Mar 17, 2017 1:45 pm UTC
Forum: Science
Topic: Science-based what-if questions
Replies: 274
Views: 17111

Re: Science-based what-if questions

Your description of something heavy hitting a stick and driving it into the ground without breaking it sounds almost exactly like a description of an actual pile driver.
by Eebster the Great
Fri Mar 17, 2017 1:35 pm UTC
Forum: Science
Topic: Eternalism. Does it allow free will?
Replies: 16
Views: 1214

Re: Eternalism. Does it allow free will?

Well there is nothing wrong with tensed verbs, but A-series descriptions are different from the "A-theory of time." Wikipedia does have an article on the B-theory , wherein it attempts to distinguish between the A-theory and presentism: The labels, A-theory and B-theory, are derived from t...
by Eebster the Great
Thu Mar 16, 2017 10:16 pm UTC
Forum: Language/Linguistics
Topic: Miscellaneous language questions
Replies: 361
Views: 25371

Re: Miscellaneous language questions

The fact that salvage lots (or wrecking yards, scrapyards, etc.) are called "junkyards" in the U.S. suggests that the use of "junk" is frequently used to refer to things that may have some value. I use "junk" in the same way. I also agree that there is a common hyperbol...
by Eebster the Great
Thu Mar 16, 2017 8:00 pm UTC
Forum: Science
Topic: Free Will
Replies: 161
Views: 5215

Re: Free Will

I'm surprised nobody has brought up the term "compatibilism" yet. I think this is basically what dougly is getting at (and yes, the Sean Carroll article he linked is very good). Essentially, if we view free will as an emergent (apparent) phenomenon rather than a fundamental property of the...
by Eebster the Great
Thu Mar 16, 2017 5:01 pm UTC
Forum: Science
Topic: Free Will
Replies: 161
Views: 5215

Re: Free Will

It's worth mentioning that quantum randomness is probably not going to be a particularly significant effect in the macro-level interactions that happen in the brain. It's too big, there's too many particles, and it's too hot. Unless you are Roger Penrose. His brain is in a constant quantum superpos...
by Eebster the Great
Thu Mar 16, 2017 5:00 pm UTC
Forum: Science
Topic: Eternalism. Does it allow free will?
Replies: 16
Views: 1214

Re: Eternalism. Does it allow free will?

Isn't "presentism" as you've described it just the A-theory of time, and therefore inconsistent with Einstein's special theory of relativity?
by Eebster the Great
Mon Mar 13, 2017 3:46 pm UTC
Forum: Language/Linguistics
Topic: Miscellaneous language questions
Replies: 361
Views: 25371

Re: Miscellaneous language questions

You left out the term wastepaper basket.
by Eebster the Great
Sun Mar 12, 2017 10:32 pm UTC
Forum: Science
Topic: Science-based what-if questions
Replies: 274
Views: 17111

Re: Space air

It does matter how fast you are travelling. If you are moving fast enough relative to the interstellar medium, drag can be significant. Needless to say, in interstellar space, "fast enough" is pretty fast. The densest regions you have any reasonable probability of flying through (assuming ...
by Eebster the Great
Sun Mar 12, 2017 10:07 pm UTC
Forum: Language/Linguistics
Topic: Miscellaneous language questions
Replies: 361
Views: 25371

Re: Miscellaneous language questions

No difference here, though there are some contexts where I would use one exclusively. For instance, I would never call a garbage truck a "trash truck" or garbage day "trash day." I also use "trash" as a verb sometimes, but never "garbage." But no, I definitely...
by Eebster the Great
Sat Mar 11, 2017 11:05 am UTC
Forum: Language/Linguistics
Topic: Annoying words, and Words You Hate
Replies: 1919
Views: 333777

Re: Annoying words, and Words You Hate

What does it mean? It refers to the children of "baby boomers." The U.S. (like many countries) had a huge boom in birth rates after WWII, so when that generation started to have children, it produced a smaller "echo boom" in the late 80s and early 90s. Most people call that gene...
by Eebster the Great
Fri Mar 10, 2017 9:27 am UTC
Forum: Mathematics
Topic: What happens if you de-discretize time in the blue eyes riddle?
Replies: 9
Views: 1718

Re: What happens if you de-discretize time in the blue eyes riddle?

Instead of allowing an opportunity to leave every day, allow one every hour. Then every minute, every second, every nanosecond... approaching the continuous case as a limit. The implication is that everyone with blue eyes deduces so and leaves instantaneously. Could this idea be made rigorous? They...
by Eebster the Great
Fri Mar 10, 2017 9:23 am UTC
Forum: Science
Topic: Free Will
Replies: 161
Views: 5215

Re: Free Will

So, is it just me not understanding, or does many worlds seem rather like modal realism? Not really. It sort of depends on how you interpret the wave function to begin with. In MWI, the wave function is the real object; particles are just almost asymptotically pointlike parts of the wavefunction wh...
by Eebster the Great
Mon Mar 06, 2017 11:14 am UTC
Forum: Science
Topic: How can we experminetly determine the acceleration due to gravity?
Replies: 20
Views: 1691

Re: How can we experminetly determine the acceleration due to gravity?

But for an object rolling without slipping, some of the gravitational potential energy is transformed into rotational energy. If I do the calculations right, the proportion depends on the ratio of the moment of inertia of the object and the product of its mass and the square of its rolling radius, ...

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