Curious Definition and 183 Threads

does anyone know a site that offers a proof for the capacitance of a delta network? just curious 93157

There is something that has been bugging the hell out of me. We have a lecture hall at our university, it has 4 doors. At the front, there is a main door, there's one at the side, and 2 at the back facing opposite directions. Now on some days, this one back door is absolutely impossible to keep...

What did the spider evolve from? Just curious. -Dan

I hope you have fun with these... OK, so you know the geometric series, right? It goes like this: \sum_{k=0}^{\infty} z^k = \frac{1}{1-z},\forall z\in\mathbb{C}\mbox{ such that }\left| z\right|<1 How about this one? Call it, say, the geometric product: \prod_{k=0}^{\infty} \left( 1+...

A friend sent me this problem over IM. I've never seen anything quite like this before and even after she explained it (albeit a rushed explanation), I still have little idea what parts of the problem mean, much less how the answer was arrived at. The problem is this: So, first of all, what...

hi, In a discussion of the historical motivations for a move from calculus to operators, my QM book says... "Many mathematicians were uncomfortable with the 'metaphysical implications' of a mathematics formulated in terms of infinitesimal quantities (like dx). This disquiet was the stimulus...

*Let f\left( x \right) be a twice-differentiable function for which \; \mathop {\lim }\limits_{x \to 0^ - } f\left( x \right) = \infty Then, is it true that \mathop {\lim }\limits_{x \to 0^ - } f\,{''}\left( x \right) > 0\;? ---------------------------------------------- Or a...

Why does the hair on our bodies (much like the hair on animals) grow to a certain point, then fall out/stop, but the hair on our heads seems to grow indefinately? Do any other wild animals have hair that can grow forever? I'm not only interested in why it grows in physical terms, but...

chem question...curious?! hi guys i was just wondering that if a solution of a weak acid has a salt of the same acid added to it, what would happen to the pH?? can anyone help me out...thanks in advance

Hi all, Just kinda curious what the take is around here on antidepressants. Myself, i don't like pills of any kind... but maybe they'd be worth the investment for some people. If anyone knows any good articles for or against them, that'd be welcome. But mostly, I'm just looking for...

Curious about this pattern. list(6N,-1,+1)less list((6n,-1,+1)*(6N,-1,+1)) produces 100% primes =>5 for as far as I am able to take it. Sorry the dwgs would not copy so have added attachments. This pattern of products repeats by value (first digit set, second digit set, etc) and by...

I became curious about Beringia's climate. Beringia is located between Chukotka and Alaska, neither of which are commonly considered tropical paradises. But Beringia existred during, and because of, the Ice Age, which suggests that it should have been far colder than Alaska. Perhaps incredibly...

People are often attracted to eyes; however, do eyes diminish in beauty over time, like other physical attributes? If not, do marriages last longer among couples who both have, according to culture, beautiful eyes?

If the size of the ball that is attached to the pendulum increases, will it affect the swing at all? What if you changed the mass of the spring, will that influence any change in T? Also, why is that an iron bob is more suited than an aluminum?

Why is it necessary to use a large excess of acetic adic in the prepartion of isopentyl acetate?

Yo. Curious about two things.. First, is it possible to use a method such as differentiation from first principles (the whole lim_{\delta\rightarrow0}\[f(x+\delta)-f(x)]/\delta thing) to differentiate trigonometric functions? Or is everyone stumped with memorizing them? (I'm curious about...

When playing around with magnets, one can notice that they attract objects from a distance. No only that, but they can also attract quite heavy objects many, many times in a row. Where does the energy that moves the objects come from/stored? Does it ever "run out"? My guess is that magnets...

Well, this problem is kinda dumb; it's in the GIF image file that I attached... a,b,c,d,...,z are all real constants, and 'n' is natural; I was wondering if such a function would exist...for the real constants a,b,c,d,...,z (filename is polyprobgif.gif and sumformul.gif)

Here's a question I've been thinking about for a while; maybe you guys could provide some guidance. If the air temperature is below 0 degrees Celsius, the water at the surface freezes to form ice, right. Now the question I have is: why doesn't freezing occur throughout the entire volume of...

Any Applicants? Followed by questions...curious Lastly, would you all mind if I (kind) of took a poll on (how) many of you are currently enrolled in advanced education? *Note: Advanced Education covers all areas'... Next to last question... What are your hopes dreams after you have...

quantum gravity research seems to be undergoing some changes so just because this function comes up today doesn't mean it will be around for eternity, but that said, look at this function L(x) = \sum_{p = semi-integer > 0}\frac{1}{x^\sqrt{p(p+1)}} It comes up in connection with Black...

Do they move in the galaxy or just stand still ? How can we check if they are moving ? I mean meteors, not planets... And Would you please tell me what makes them move ? Thank you very much,

For about as long as I can remember, I have noticed that when I am standing somewhere while people are passing close by me I always feel a small "tug" as they go by. The little tug is always toward them. It always makes me wonder what causes it. After I feel the tug, about a second later I feel...

I'm curious about the open system interconnect model. I was wondering which layers of the OSI model are both hardware and software related? How does the OSI model package the data for transmission? I don't believe that the OSI model is perfect, what do you think could improve it? Do all...

What are the specifications of your fastest home computer? I am curious to know what level is currently average for intelligent users (people that might use a computer for something other than email and websurfing). I currently have a Celeron 1.1 ghz, 370 Motherboard, 256MB Ram, 32 MB PCI...

For each ordinal number i, recurisively define: \begin{equation*}\begin{split} Z_0 = \{ \varnothing \} \\ Z_i = (\bigcup_{j < i} Z_j) \cup \mathcal{P}(\bigcup_{j < i} Z_j) \end{split}\end{equation*} Definition: A set S is a Z-set iff there is an ordinal i such that S \in Z_i...

I know that this isn’t very practical but I discovered the following curious inequality when I was playing around with d(n) where d(n) gives the number of divisors of n \ \epsilon \ N. If n has p prime factors (doesn’t have to be distinct prime factors e.g. 12 = 2^2 \ 3 has got three prime...

The TOE should explain EVERYTHING. We may not know what it is, but if it does indeed explain everything, odds are that we already possesses a formula which describes a very commonplace phenomenon of physics, but have not yet recognized the universality of that phenomenon.

So,... this strands of DNA is what makes everyone of us unique and they're in every organs, tissues, blood...etc right? When there is an organ transplant, the part(or organ) that you're accepting has its own genetic stature so doesn't the body reject the new part? Once you acquired a new...

For those of you leared ones who post a lot of answers to our tough(ha ha) questions, what kinda and how much schooling do you have and from where? Pan

in this webpage there is a book about recreational maths in it there is a paradox by raymond smullyan, it's on page 189: http://www.g4g4.com/paul/BOOK.pdf what do you think can the paradox be solved?

I am curious about muons. I've been told that they appear lower in the atmosphere than they should. Ie. that they should be gone within a short distance of passing through the atmosphere, being created at a certain height and having a very short lifespan, but instead are found much lower. I...

I'm curious what you think of meditation or your own experiences. There is this thing called the relaxation response, when a person meditates regularly it's supposed to equip them with a kind of tool to prevent the flight or fight response, assuming in modern day society this response is...