Strange Definition and 549 Threads

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.

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

hey i need help with this as a high school grad ,and one people think happens 2 be a maths prodigy a junior student came once and asked me 2 help him integrate x! i could not give a solution ,now pls can anyone help with this puzzle?

Let K=Q(i,(1+i)^(1/3)). Describe all of K's embeddings in C. (C-Complex Field, Q-Rational Field). Describe? Could it be the answer is just the identity? How could I prove that? Thanks in advance! :smile:

When universe is still a strange point, what is in the universe? (asume big bang did happen and universe was created in a certain time)

I'm reading through a modern physics text (on my own) and it did some very strange manipulation when deriving the relativistic form of the kinetic energy equation. It starts off deriving relativistic force which I understand. Basically, the implicit derivative of (d/dt)(ymv). Y is gamma and is...

Two charges, –16 and +4.0 mC, are fixed in place and separated by 3.0 m. (a) At what spot along a line through the charges is the net electric field zero? Locate this spot relative to the positive charge. (b) What would be the force on a charge of +14 mC placed at this spot? I am totally...

TV, Monitors ? So strange ... Why is all the CRTs and LCDs in 4:3 ratio in their dimensions ? Does it have any scientific reasons ??

Hello, I got this strange email from a guy who must have spammed it out across the globe. I spotted what I thought were a few misconceptions, but I'm not a physicist so I can't give this thing a thorough critique. I'll just paste it below. It's probably one of those cases where some...

Hello, My data gravely perplexes me. I've set up a simple series RC circuit with an AC emf of 14V @ 20Hz. Resistor and capacitor values are 3.9E4 ohms and 4.7E-5 farads respectively. Ideally, the voltage across the resistor should be a simple sine curve, since this is basically an RLC series...

I've always loved talking about physics with people, unfortunately none of my friends are really interested in it at all. Are there any people on here, mainly night owls that go on MSN messenger and would like to talk about physics, chemistry, and those sorts of topics? If so, PM me, it's...

let be (dS/dt)+(gra(S))^2/2m+(LS)+V(x) where L is the Laplacian Operator and V is the potential...could it be considered as the Hamiltan Jacobi equation for a particle under a potential Vtotal=V(x)+(LS) where S is the action

What do the strange values on disc capacitors signify exa 005 and 5D 1KV , why can't they just be abbreviated in a more intuative way like for exa just 10 micro farads ? Also for a small mic how can I tell apart which ends which + or 1 and what do the letters HAI signify on some...

Hi! Can anyone explain to me what this sign means. \equiv

This is a thread to ask why. Here's one on my mind lately considering Arnolds threat to run as President. If conservatives hate liberal Hollywood types, then why do they keep making Presidents out of actors?