Science, technology, fine literature, and the general pursuit of higher learning.

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File 13288844359.jpg - (76.43KB , 700x296 , 4.jpg )
1586 No. 1586 hide watch expand quickreply [Reply] [Edit]
I've been hearing a lot of ads lately for gold sales. Apparently a lot of people see buying gold as a good hedge against inflation, or even against a possible hyperinflation. Ron Paul is advocating a return to the gold standard, and lots of his supporters seem to believe the paper dollar is doomed. Most of these people probably also have a stash of silver and gold coins under their mattresses.

Are the doomsayers right? Do you think the US dollar will collapse? And if it does, will silver or gold even be useful to people if Americans are forced into a barter economy, and only immediately useful goods and services will matter?
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>> No. 2102 [Edit]
That's gorgeous. One of the appealing things about bullion is that you have a lot of interesting choices.
>> No. 2104 [Edit]
That's true. I also found nice silver coins from Venezuela, Austria, France, etc. There's a huge variety.

One thing I'd warn against is buying on eBay. If you want to get small or modern coins there, you're probably safe. But the older and larger coins like the old German silver 2, 3 or 5 mark coins go for outrageous prices. The same one I got for 10 and a half is selling for 30 dollars plus on eBay. Even worse, a lot of those coins are probably counterfeits. If you go in for these coins, I'd say buy directly from a trusted and well-known dealer.
>> No. 2159 [Edit]
shinden9 would sleep with you
>> No. 2160 [Edit]
Hey, these are WWI German coins, not Nazi coins.

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2038 No. 2038 hide watch expand quickreply [Reply] [Edit]
do u thnk this duck went to school
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>> No. 2040 [Edit]
i wish i went to school wish duck i'd have been his friend and we could eat bread together by the pond at lunch ; _;
>> No. 2041 [Edit]
Of course that duck went to school. He's quite obviously very intelligent. How else could he stay on that airplane wing like that if he wasn't?
>> No. 2043 [Edit]
that duck died
>> No. 2051 [Edit]
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You came to the wrong neighborhood

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798 No. 798 hide watch expand quickreply [Reply] [Edit] [Last 50 posts]
I'm interested in what you're interested in. Tell me about your academic pursuits and areas of interest. I want to know what you guys are learning about right now and would like to learn about in the future. Maybe we can help each other learn.

Right now I'm wrapping up my interest in Rome. I ended up learning about it backwards, I started with the Eastern Half (Byzantine), The Classic Empire, and now the Republic and earlier. In one form or another, Roman Civilization existed for 2,214 years. Pretty interesting stuff.
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>> No. 1984 [Edit]

A video containing my favorite Marchesa dresses.I like the butterfly one the best.
>> No. 1995 [Edit]
I'm primarily interested in literature, philosophy, and religion. I enjoy reading and thinking about things. However, my future course is blank. I just want to read and talk about interesting things.
>> No. 2004 [Edit]
A list of feminine perfumes for anyone who wants to be a trap:
>mitsouko,Shalimar,cuir de Russie,Chanel No.5, and Jicky
>> No. 2021 [Edit]

A paper on male/female differences in offers of sex.

Robots will rewrite society.

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1617 No. 1617 hide watch expand quickreply [Reply] [Edit]
Please don't mind me a little dump...
will just leave this here and I'll be done.

Good luck to you all and see you guys around.
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>> No. 1737 [Edit]
Me gustaría leer tu papel Kabbalah. I have a Cuban friend who might be able to help translate it.
>> No. 1738 [Edit]
There you go: >>/ddl/62

Post edited on 19th Mar 2012, 8:58pm
>> No. 2005 [Edit]
OK, I didn't really work that much on the phrasing. I just tried to eradicate the LOTS of typos, complemented one aphorism and added one little sentence at the last scolium:

Mathematics are the world of (theorems’) demonstration. Logic is the world of (theories’) formalization.
. . .
One is functionally one, merely as long as one takes and accepts as its own everyone else one has been.

However, here is the current version, english and vernacular, together with the corrected PNGs:

>> No. 2887 [Edit]
5 years later, I'm done with this. Added lots, changed the ending.

It's still vernacular but will leave it here all the same:
Might translate it later.

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1985 No. 1985 hide watch expand quickreply [Reply] [Edit]
Only 2 years after his Catcher in the Rye was published, he secluded himself from society. He remained a recluse until the day he died. Catcher in the Rye is my personal favorite book, and the fact that he wasn't a damn normal makes me admire him more. I can relate to him both as being an anti-social and as a fellow writer. J.D. Salinger is certainly no phony. So what are your thoughts of him?
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>> No. 1996 [Edit]

Being and Nothingness might not be a good one to start with. It's a very deep essay on existentialism, and checks in at somewhere around 700 pages. I'd read it after you've finished with his earlier stuff, since his ideas evolved quite a bit (and, sadly, got tainted with politics near the end).

If you've never read any of his work, I'd start with his early novels. "Nausea" - his first - is probably the best starting point, then you can go from there. No Exit, The Wall, Existentialism is a Humanism..then tackle the rest of his stuff.
>> No. 1997 [Edit]
I'll grab those, thanks for the recommendations
>> No. 1999 [Edit]

I hope you like them! Sartre really changed the way I view life.
>> No. 2000 [Edit]
In what ways? I'm not really familiar with him, but it's interesting to hear that books can be life-influencing... they must have a lot of great ideas in them.

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1841 No. 1841 hide watch expand quickreply [Reply] [Edit]
Is there reason why Americans use Fahrenheit as temperature scale? I am European and here I hear a lot "stupid americans are still using fahrenheits". I want to hear your opinion, is there any valid reason to use Fahrenheit scale instead of Celcius/Kelvin?
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>> No. 1942 [Edit]
The biggest reason to use F over C is the smaller interval, and as the feeling of changing one degree is much smaller in F than C, and therefore there generally isn't a reason outside of scientific sort of measurements to use a decimal point with the system. two numbers to read is faster than three when the question of is it nice out or slightly chilly.

Though for all scientific purposes, there is no difference between any of the systems. You don't use F or C in the ideal gas law, only R and K, and any difference in one gets passed on with a different value for the constant or conversion factor, and the calculator is the one actually doing the math, and while the bigger number is larger the smaller number has decimals following it so it's the same number of key presses into the calc in the end.

In terms of temperature, there really isn't a strong reason outside of "I learned it this way and am too damn lazy to learn YOUR way because it's different from mine" between imperial and metric. Now, doing physics and dealing with the G-constant, lb force and lb weight, and kips..... yes, there is a valid argument as to why the metric system is more practical and overall an improvement, but with temperature you won't find any meaningful testimony.
>> No. 1943 [Edit]
I've never heard of the Rankine system, just the Kelvin system is generally used. I guess maybe if you're a grad student or a PhD or something, some equations do require Rankine
>> No. 1944 [Edit]
I've had course called "Household heating systems" or something like that in my school and in course material said that if temperature changes more than one Celsius in short period, human can feel it (I can't show it because it isn't in English. I didn't find any results in English about this.). If we believe that, we can say interval of Celsius is enough in daily uses.

You are also ignoring the water argument which gives Celsius scale connection to SI-system is which is based on water. Water is part of our daily lives and that's why I think Celsius scale is definitely better in daily uses.
>> No. 1948 [Edit]
Your first example is used to illustrate how a small temperature change over a short period of time is noticeable to humans, whereas that same arbitrary small temperature change over an equally arbitrary long period of time is not noticeable. That is, it is not so much the temperature change itself that matters, but the rate at which the temperature changes.

The second point, is false. Water itself is a very vague term, especially in the way you use and idolize it. The average temperature in the South Pole is below 0 C, and yet there's enough water to sail a ship through. You can also boil water at room temperature and a low pressure. While the S.I. system as a whole is much easier to relate units BECAUSE all of the major measurements were all based on the same arbitrarily sized cube of deionized, pure water at sea level, the reasons for it being better overall have absolutely nothing to do with the choice of the arbitrarily sized substance being water.

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1888 No. 1888 hide watch expand quickreply [Reply] [Edit]
Any are valid

Here's one I was considering; Chinese, being a tonal language, depends on the intonation of a sound to mean a certain idea, word, or character, based on which one of the five tones it is pronounced with.

For instance, the phrase
Nǐ gǎn mà Wǒ mā de mǎ ma?
Meaning, "You dare scold my mom's horse?"

The tonation of the words can change the meaning greatly.

Nǐ gǎn mà
You dare scold

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>> No. 1911 [Edit]
They understand it from the context.

A lot of chinese readers can still guess the meaning of a symbol they don't recognise via the context. So the funny thing is they end up understanding the meaning of a character but don't know how to pronounce it. Thats one of the retarded things about this language.
>> No. 1917 [Edit]
You can't sing hanzhi though.
>> No. 1921 [Edit]
>This said, and this known, in Chinese songs, how does anyone know what the fuck anyone is saying? You can't sing in intonations. Does anyone listen to the March of the Volunteers and scream "WHAT THE FUCK DID YOU SAY ABOUT MY MOTHER, MAO?!"

Apparently this is why they always have subtitles in their music videos.
>> No. 1927 [Edit]

Since Chrome is not welcomed in the appropriate thread, please pardon my intrusion. This is for Language Immersion, an addon that randomly swaps out some text on a web page with the language you want to learn (no Japanese yet). A work in progress but still very useful. You have three levels to choose from: novice, intermediate, and fluent.

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1820 No. 1820 hide watch expand quickreply [Reply] [Edit]
I'm all ears.
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>> No. 1840 [Edit]
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Zero power zero is equal to zero divived by zero. Which can't be determined.
>> No. 1857 [Edit]
File 133472667459.png - (2.34KB , 170x150 , proof.png )
Exactly. And that, as well, is the reason why a^0=1 for every non-zero real number a: because you NEED to divide by a, in the proof for real numbers' Calculus.

On set theory, 0^0 it's the number of functions from Ø (the empty set) on itself; wich, whatever wiki says (in this case), it's also undefined. It could be 1 indeed, if you take the one and only empty function identical to Ø, because Ø is a subset of each and every set (wich includes the set equal to the class of functions of any set); but it could also be infinite (or "indetermined"), since you cannot proove ANY relation between ANY sets NOT being a function on and from Ø, without coming to a contradiction with Ø's emptiness; that is: any random relation MUST be a function from Ø on Ø, because you cannot show any especific element from Ø intersected with domain of the relation -wich are none- that is NOT related with one and only one element at the -equally empty- image; in other words: it IS a function, simply because you cannot show the element that would disprove it as such. That sort of proof, on wich you do not show the propper deduction, but argument instead the inexistence of a case that contradicts your (universal) proposition, it's called Vacuous Truth ( )...

Neddles to say, this whole affair is very counter-intuitive. As said, it depends on the fact that we aknowledge that exponentiation on real numbers does NOT mean the same than in natural numbers (multipliying several times, wich is -allegedly- merely adding several times), but something entirely new. However, if we decide to go with the convention of 0^0=1, under some alleged convenience, this would still makes us face a serious ontological question:

How is it possible that starting with nothing and operating with it, 0 times, suddenly gives us something?...
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>> No. 1861 [Edit]
lim of a/a as a->0

from both the positive and negative side, approach and converge to 1.
and l'hopital on it when you place 0 directly gives 1/1 as well

>How is it possible that we can obtain something from nothing, by doing nothing?...

If we take any non zero number and put it to the 0th power, we are infact doing something to that number.
why does this change when the number is 0?
Or does it stem from the argument 0 isn't an actual number, in a similar way to infinity?
>> No. 1867 [Edit]
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>If we take any non zero number and put it to the 0th power, we are infact doing something to that number. why does this change when the number is 0?
Because philosophy...

I was mostly trying to problematize the concept of Empty Product, as an example of considering actions taking place over non-existing things as valid, to see if it could give us a hint about the problem of creation ex nihilo; namely, if such a thing is really possible/attainable for us, either conceptually or physically, or every act of -human- creation it's condemned to be inevitably unveiled as the mere application a trope or the office of a caftsman (check: ), rendering us all as poor excuses for demiurges and not true creators.

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1746 No. 1746 hide watch expand quickreply [Reply] [Edit]
lol. took me about 25 minutes...

The answer is 2, btw.

Post edited on 27th Mar 2012, 11:01pm
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>> No. 1807 [Edit]
Took me about 5 minutes. 2 obviously because you are looking for numbers with symmetry. 6 and 9 can be made by it, so they have 1. 8 has a value of 2, because it can be split in two ways. 0 has 1.
>> No. 1809 [Edit]
File 133400825622.png - (2.77KB , 245x85 , symmetries.png )
>numbers with symmetry. 6 and 9 can be made by it, so they have 1. 8 has a value of 2, because it can be split in two ways. 0 has 1

but, if you're counting symmetry axes, 6 and 9 has none, 8 has 1 (or maybe has 2, at the most) and 0 has 2...
>> No. 1814 [Edit]
Like a preschooler could understand that.
>> No. 1815 [Edit]
Yeah, well, we already made clear wich one aproach was the correct. This is just exploring what others came with cause it's interesting.

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1079 No. 1079 hide watch quickreply [Reply] [Edit]
Post any Documentary you like here.

Here's one for Tohno-Chan

Japanorama - Otaku

I'll post some more in a bit.
>> No. 1083 [Edit]
Is it really the same thing?

I'm quite partial to "The Battle of Chernobyl."
>> No. 1108 [Edit]
So otaku culture began with someone asking for advice on 3DPD, well I'll be fucked.
>> No. 1784 [Edit]

No. 1127 hide watch expand quickreply [Reply] [Edit]
So what's Tohno-chan's opinion on Thorium nuclear energy.
Thorium is named after Thor, the god of thunder and protector of mankind.
A Thorium reactor can produce hundred of times more energy than uranium and creates almost no waste and the waste that does get created can be used for medicine and space exploration.
There is no chance of nuclear meltdown or any sort of disaster.
And it get's even better, Thorium is so common on earth that we have an unending supply.

In other words we have the technology and knowledge of an unending supply of cheap, clean energy and we've had this for over 50 years.

Thor was a very accurate name for this element
12 posts omitted. Click Reply to view.
>> No. 1470 [Edit]
>Lets not forget that fusion power plants aren't perfectly safe and can be used to create nuclear weapons.

How can it. The material used in fusion are things like helium and hydrogen. Not to mention, fusion power plants aren't feasible yet, and we haven't figured out how to get more energy from fusion than we can put in on a large scale yet.
>> No. 1515 [Edit]
I don't get it, how could it be cleaner than simple Uranium fusion, if after fusion Thorium transforms into U233.
It's just cheaper I think.
>> No. 1573 [Edit]
>we haven't figured out how to get more energy from fusion than we can put in on a large scale yet.

Not true. thermo-nuclear warheads kick off many times more energy than was used to produce them. the problem with using them for a power source is that the warhead gives off all the energy at once.

>I don't get it, how could it be cleaner than simple Uranium fusion, if after fusion Thorium transforms into U233.

look at the radioactive decay paths. U233, U235, and U238 have very different decay pathways.
>> No. 1652 [Edit]

Larger bulk composition =/= Larger usable supply

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