Strange Definition and 566 Threads

The question is a volume of 2.2m^3 of air at inital conditions of 1.2bar and 303K undergoes the following process to complete a cycle : i)isothermal compresssion from state 1 through a volumetric compression ration of 6 to state 2 ii) isobaric expansion from state 2 back to the initial...

I just had an influx of emails from different addresses that just have one word in them followed by a period, and the words all begin with the letter "a." So, for example, I received the word "accommodate." from one address and "acclimate." from another. Looks like a virus that's meant to do...

These are machines that I just learned about while I was bored. So, i will now ask about what looks like a triangular toothpick ion engine. So these lifters are really strange, I don't know how they work, http://www.americanantigravity.com/articles/256/1/Lifter-Plans here they are...

Ok, so we all know the following... Elementary quantum mechanics is constructed by postulating the canonical commutation relation (CCR) between the coordinate of a particle and its conjugate momentum. Quantum Field Theory, on the other hand, is constructed by postulating the exitence of a...

A few of my friends and I have been trying to integrate/derive the following: f(x) = x^x without success. I'm not sure if it can be done conventionally, but I was wondering if anyone had any thoughts on this one. Thanks.

Mars is likely to be the first planet that we might decide to terraforum. Problems with Mars is its low atmosphere and cold temperatures. I have seen many strange concepts for terraforuming Mars. Like nuking Mars (not a good idea) to building factories to pump out green house gases...

I've been having these dreams lately, where I'm at the final period of my semester and I've incredulously found that I've missed out on a class that I've registered for...the entire semester! Sometimes there are variations in the severity, e.g. it seems that I've missed out on an exam, or have...

I'm in AP Calculuc and was given a homework package, which is an old university introductory calculus exam. There is one particular question with which I'm having a terrible time. It is known that f(0)=5 and the tangent line to the graph of f(x) at (0,5) is y=5+3x. It is also known that...

Ok, i am just standing there, when two very nice girls walk past, they walk on a few yards then turn around and walk back to me, one of them asks me, (were you looking at my---) i think she is polish, i say (well it is very nice) so she slaps me, not hard, but i was shocked, and then she...

"strange" sums... Let be the next 2 sums in the form: f(x)+f(x+1)+f(x+2)+... (1) and f(x)+f(2x)+f(3x)+... (2) how would you calculate them?..well i used a "non-rigorous" but i think correct method to derive their sums..let be the infinitesimal generator D=d/dx...

Did you know that the word 'gullible' does not appear in the dictionary?

I'm attempting to create a quiz with the first 8 answers with the possible answers of any of up, down, left, and right... From doing research, I understand this is possible for quantum mechanic problems in reguards to spin. Is this true? I would like to make a believeable college level simple...

I'm having difficulty to understand a circuit from my textbook (figure attached). Essentially, the currents seem to go in opposite directions and ultimately meet. It looks strange (circled area), but maybe there is a simple explanation behind it. I wish I could redraw the circuit in a simpler...

We all know that the formulae for velocity is v=x/t (x=distance) & that acceleration= (v-u)/t know as we know x=ut+(at^2)/2 let's replace this value of x in the formulae of velocity & make "a" the subject of furmaulae, What I got was a=2(v-u)/t istead of a= (v-u)/t Whats...

That is, at least part of it is true... http://www.cnn.com/2006/LAW/02/10/political.whodunit.ap/index.html

http://smh.com.au/news/health-and-fitness/my-brother-is-an-alien/2006/02/08/1139379562020.html

One of my friends asked me this, and I have no idea how to get the answer. I don't even know if there is an answer... if someone could help, that'd be great: xy = x/y = x-y If y cannot equal 0, what is the value of x and y? Thanks :D

Do we know for certain that bosons exist? Do we have experimental evidence that bosons exist? How in the world can bosons be real and yet not obey the pauli exclusion principle? Does the fact that bosons do not obey the pauli exclusion principle mean that it is impossible to tell one...

Hi, What do you think about the possible (nontrivial) solutions of this equation ? (1) f '(x) = f(x-1) (f is a smooth function R -> R) More generally, what do we know about these ? (2) f '(x) = f(x+a) (a fixed in R) (3) f '(x) = f(g(x)) (g smooth diffeomorphism R -> R )

Hi, I'm a bit stuck on the interpretation of the following tensors: P^{\mu\nu}=g^{\mu\nu}-\frac{q^\mu q^\nu}{q^2}\hspace{5mm}\text{and}\hspace{5mm}\bar{P}^{\mu\nu}=\frac{q^\mu q^\nu}{q^2} Here, q^\mu is a 4-vector, and g^{\mu\nu} is the metric that goes (1, -1, -1, -1). I've calculated...

There's a machine that uses a type of plastic material (reinforced Teflon) as a wear ring. The plastic rides on a highly polished metal surface and eventually wears out at which point the machine must be rebuilt. If the plastic and metal sliding surfaces are exposed to bone dry (ie: no water...

i always thought the trapezium in orion was a very strange quadruple star - not a double binary, but an actual quadruple star group with bizarre orbital patterns. however, now i read that it is just a cluster, i guess implying that they are not really orbitally associated. can someone please...

I was trying to find out why when you mix a cup of tea with loose tea in it, the loost tea is first at the bottom of the cup on the outside, but when you take the spoon out, the loost tea moves towards the middle of the bottom of the cup. couldn't find it anywhere else online, thought i'd try...

i don,t know where to put htis thread..but here it go... let,s suppose we have N objects on e of this being a black ball, goal of the game is to pick the N-1 objects (all except the black ball) to win the game..my question is what would be the strategy to follow to be the winner?..an extra rule...

http://home.hetnet.nl/~inthepicture/quarks/" I personally find this a brilliant way to visualise particles, but don't think there's any "truth" in the symbols, any more than there's "truth" that antiparticles in Feynman diagrams are really particles that time travel.

Hi everybody. I'm going on a date with a girl tomorrow, I need some Ideas. We agreed that we both wanted something non-traditional, that means no movies. What unique ideas can you come up with?

Something an engineer can appreciate. Where is my dozer? - http://www.garrett-engineers.com/mambofiles/powerpoint/WhereIsMyDozer.ppt or just the pictures (UK website) http://www.spk-equip.co.uk/acatalog/Where-is-my-dozer-A.jpg And equally strange - http://www.usmra.com/graphics/deer.htm

This struck me as odd. http://en.wikipedia.org/wiki/Chile It just struck me as strange that a guy name O'Higgins would be Chile's most renowned patriot. http://en.wikipedia.org/wiki/Bernardo_O%27Higgins

Tonight when i wander in the street, I looked up to the sky and saw a very bright thing. I thought it was an aeroplane. However, it did not move. I had observed it for about 10 minutes, and it did not change its position. It was still. So i thought it was a strange star. then I chased the star...

OK, I am having some issues with some trusses. The first one is a platt truss, h = 8 m, length of horizontal beams = 8 m F = 340 kN occurs at each of the 5 pts between the supports, one is a pin, the other is a roller. I get the force in a diagonal to be ~240 kN, but the answer in the...

This isn't a homework question. I'm studying this from a book (Thermal Physics by Kittel & Kroemer) currently. Up til now I've had no problem following it. There's one derivation that's got me a little stumped however. I had thought my calculus was proficient enough, but I'm just not seeing...

This is a strange question, but why (in some physics books) are integrals given as: \int dx\,f\left(x\right) rather than \int f\left(x\right)\,dx ??

It was a small beetle like a Ladybug but it had back legs like a grasshopper and it jumped like one too. Any bug experts out there know of a hopping beetle?

Cite: Read the rest of the article here Brain

The students went to their school in east of Jerusalem after summer holiday. They found eight meter height concrete wall divided their school into two parts: this means they need visa and to travell several kilometers (after completing the wall) to move from one part of the school to the other...

Can the human digestive system digest dental floss?

I got this question here that says there are 1000 neutrons in a one-dimensional infinite potential barrier box of length L and at t=0, each has a wave function given by \Psi(x,0) = Ax(x-L) But isn't this a contradiction? We have derived earlier in class that if a particle is to be a in a...

I turned the light on in my fishtank today and found 2 things: 1. The goldfish had its eyes "plucked" - simply they were missing from the sockets, and the goldfish was swimming upside down gulping for air at first, then tumbling and swimming normally for some time and swimming on belly again...

In order to block Miss Evo from winning this year's banner for best thread about strange ways to catch animals I bring you: WORM GRUNTING SOPCHOPPY -- One foggy spring morning deep in the Apalachicola National Forest, William Johnson took a friend to watch while he "grunted" for worms...

The minute hand on a watch is 2.0cm in length. What is the displacement vector of the tip of the minute hand? from 8-8:20 am. Express vector DeltaR in the form DeltaR_x, DeltaR_y, where the x and y components are separated by a comma. I thought i had it with the answer of 3.4 cm, but...

SE equation in (1d) a\frac{d^{2}\phi}{dx^{2}}+V(x)\phi=E_{n}\phi (1) WKB approach \phi=exp(iW/\hbar) (2) W=[2m(E_{n}-V)]^{1/2} then from (2) we can obtain the potential and introduce it in (1) to get a differential NOn-linear equation...

The wikipedia entry on strange matter didn't tell me all I wanted to know, so I'll have to ask here: Is strange matter a fluid like 'neutronium' matter is? i.e. given advanced enough technology, could a cube or other non-spherical shape of strange matter be created? Or would it form a sphere...

http://www.didyouknow.cd/phobias/phobiasal.htm Can people really be affraid of some of these?

The 3D dynamical system introduced in the following site; http://www.geocities.com/tontokohirorin/mathematics/limitcycle/limitcycle2.htm shows not only chaotic behaviour, but also converges to a strange-shaped limit cycle under a certain parameter setting!

A car travels with a velocity of 90 km/h on a stright line. And a man in the car saw a castle left of the road. The angle the straight line to the castle from the cars position was 30 degrees. 15 min (same vel) later another man spots the castle in an 40-degrees angle. After another 15 min they...

Let f: \mathbb{R} \rightarrow \mathbb{R} be given. Let L be a real number. State the condition for saying that as x tends to a, the limit of f(x) is not L. The statement ought to begin with "Given there exists \epsilon > 0". Best guess: \lim_{x \rightarrow a}f(x) \neq L means, given there...

How can a user name be created with strange characters

Hi, i was working with my teacher, and i discovered the continuous differential of x!gives x!,also the continuous integral to infinity of x! gives x!.how true is this ,also i wanted to know if the last number ever is going to be odd or even ,because from my point of view the ranges of all...

really strange but serious question - DiscussAnything.com - Address:http://www.discussanything.com/forums/showthread.php?t=75273 Changed:10:18 AM on Monday, May 16, 2005

For a while now, id say a matter of months that i can remember, i will say the number 20 or 27 in my head. I never mean to or plan to, but i still do from time to time. It hasnt happened lately, but its very strange. I will be walking from class to my apartment and talking to myself in my head...