Modern and Theoretical Physics

Hi there, Im having a bit of a debate with my friends. Ice - is it the hardest thing know to man? I reckon it is.

I am confused of considering a solenoid with current as a magnet or by the Fleming's right-hand rule when doing some problems. Here are some questions I am quite confused with: 1.Will a metal which can be attracted by a magnets be induced to be a magnet when it is put in a magnetic field? 2.Do the above metals have move along the field line when it is attracted? 3.When a magnet is near a solenoid with current, the current cause the solenoid to form a magnets. Hence, there's an attractive forces between them. But, when the magnet moves towards it, by Fleming's right-hand rule, the solenoid will repel it, so what's the net movement of the two things? 4.Why do compasse…

I am relativly new to this kind of thing. Anyway, I would like to see if anyone of my theorys might actually work. Copyright 2005 Theory of Lightning power My theory is fairly simple. A complex titanium box will be created. This box is covered in a very strong, electrical and thermal dispersal material. This container will have a very long lightning rod. On this rod will be a transformer like rod, that would decrease the strength of the lighning my 65%. Then the reduce shok will travel into the center of the container. The inside of the container would be lined with with powerfull electro magnetic lithiom battereis. MY theory is, If a positiv…

I know its one of the four fundemental forces, but why does it happen? Is it inherant in the atomic structure of magnets?

Chemistry has many examples of the exothermic formation of dipoles. For example if metallic iron is reacted with molecular oxygen the reaction is exothermic and create three dipoles. The iron becomes a cation indicating more protons than electrons, the oxygen becomes an anion indicating more electrons than protons and the two neutral starting materials become an ionic dipole of iron oxide.

I believe I am posting this in the correct section. This is not a theory rather just a perhaps not-so-simple question regarding our understanding of space. If you feel this belongs better in pseudo-science, so be it, please move it. I'd like a nice discussion of the points brought up and if anything is misleading/incorrect please let me know. Observing how physics is unravelling and dwelving deeper into the fundamental building blocks of our universe I can't help but see how more complex theories/models/formulae etc. are getting to describe what should be ever more simpler building blocks (particles/energy at fundamental level) and their interaction. As physicists…

Firstly, thank you for your time and consideration to anyone who reads this. I am almost certain that what I'm about to attempt to explain is how gravity works, not the details but the general principle of it's operation, the underlying mechanism of it, and it's implications and it should not be a waste of your time. Actually it's been 3 years since I first published a lesser explanation on it without much interests, I haven't been able to prove anything and really lack the knowledge and expertise at this time to prove it, but I've still been working on it and perhaps now it will make a little more sense to someone...also if I've misposted this theory very sorry I'm try…

Does an electron flow around atoms, like a stream of water moving around rocks? Or Does an electron get bumped into the next atom, then another electron gets bumped out of that atom and so on in a chain reaction?

So I understand that the photon is the carrier of the electromagnetic force, but what does this mean? Does it mean that photons have a positive or negative charge? And when an electron emits a photon, why doesn't its charge change? I mean, if the emitted photon is carrying an electromagnetic force, I'm assuming it got it from the electron, and so the electron should have less charge after the photon leaves it. But I know electrons always have a charge of -1. So what does it mean for a photon, or any forcing carrying particle, to "carry a force"?

BATAVIA, IL—Fermi National Accelerator Laboratory physicist Laird Karmann, a noted string theorist and accused philanderer, said Monday that he can "explain everything" if his wife Elizabeth will just give him a chance. "Surely, anyone can see that, mathematically, the universe is composed of Riemann surfaces, having positive-definite metrics, across which the attached 'loops' or free 'strings' have a (1+1) dynamic topology," Karmann said. "But string behaviors are Lorentzian, meaning that they—like me—need an intense dual-phase Wick rotation now and then just to stay in rational space. I mean, it was just a blowjob." Elizabeth refused to accept her husband's theory, sugg…

Can someone help me out and give me a good explanation about Pyroelectric crystals and Piezoelectric crystals ? Help appreciated ! THnks.

Okay, suppose we can create a stable wormhole with exotic matter. Wouldn't both ends of the wormhole remain in more or less the same reference frame? So if someone were to grab one end of the wormhole and start going 0.999cish for awhile, thousands of years could elapse on the planet he left from (where the other mouth of the wormhole lies) yet time relative to those on either side of the wormhole would appear to be going at more or less the same rate, correct? Yet because both ends of the wormhole remain are in the same reference frame, wouldn't it be possible for our traveller to send information about the future (as he observes it) back to his planet? Or if t…

Planes get charged up when flying through clouds right? That's why they're earthed when they land. But in the case of mid-air refuelling, the planes can't be earthed. If there is a spark, then things can be lethal. How do they prevent this from happening ? Do they make the refuelling probe out of rubber or an insulator ?

In the meissner effect the magnet "floats" on a superconductor. A small magnet would actually stay in one position as if it is "pinned" there by a mysterious force. The magnet would "resist" if we try to"pluck" it from it's position. Is this "pinning force" same as the electromagnetic drag force experience by a magnet floating on a spinning copper disc?

How to prove or disprove this 'law' if you can't calculate/determin the amount of information?

Neutrinos they are very small. They have no charge and have no mass And do not interact at all. The earth is just a silly ball To them, through which they simply pass, Like dustmaids down a drafty hall Or photons through a sheet of glass. They snub the most exquisite gas, Ignore the most substantial wall, Cold-shoulder steel and sounding brass, Insult the stallion in his stall, And, scorning barriers of class, Infiltrate you and me! Like tall And painless guillotines, they fall Down through our heads into the grass. At night, they enter at Nepal And pierce the lover and his lass From underneath the bed – you call It wonderful; I call it crass. by Joh…

Is the moving filament over a conducting sheet track-steady theory (moon page 339) the same as the A-φ method ?

Hi everyone! I was recently reading a book called "The fabric of the cosmos" and it has quite a lot of things in there and one of them was thae idea that particles only have an absolute position when viewed otherwise they are thougtht to exist as a probability wave, the particle has x probability of being here and y probability of being there. If this is correct, would it be possible to manupulate the probability wave on any level? if you could then in theory you could make a sort of matter transporter my altering the probaility wave of all the constituents and thus making it certain that they exist in one poinet over another. That make any sence to anyone? I …

Hi, Does someone know if there is a way to calculate the amount of information of something (object, area, atom)? Would it have a unit?

We all know that electron is negative and the nucl is positive and that they attract to each other. My question is why the electron ORBITS the nucl? What are the fources influencing that behavior of the electron? Thank you

It is possible to achieve a sort of time travel, first you will have to be travelling at, or close to the speed of light and for instance, say you wanted to travel to the andromeda Galaxy, the pilot, or crew would age 28 years travelling there and 28 years back as well and in the mean time the earth has aged 400,000 years!:zzz:

MFF Is the way to the future. Last I checked most standard ammunition is made of some type of metal. A metal that can be effected by magnetic waves. Well my idea is a 2 level magnetic shield. A negativly charged first layer and a extremly powerful positively charged second layer. The idea is by negatively charging the metal in the ammuntion, the strong possitive layer should bounce it back. Now in order for this to work the magnetic field should be EXTERMLY POWERFUL. A new stronger magnet should be developed for this to work. Lance Cho

One of the first things we learn in science is that matter can neither be created nor destroyed. But what about when matter and antimatter collide? I've been reading "The Elegant Universe"; and it talks about matter and antimatter colliding and destroying each other. So how does this all fit together? Has that law since been changed?

I've got an understanding problem. It's about the behaviour of charged particles in plasma inside of a tokamak. It says that a particle in the non-homogeneous magnetic field (toroidal field), moving on the spiral trajectory all along the magnetic field lines, tends to drift downward (for ions) or upward (for electrons), together with the axis of the Larmor-spiral, which makes plasma highly unstable and damages the chamber walls. That's the reason why the second field (poloidal field) is necessary, which is provided by plasma current itself. Which force is it, that causes the particles to drift (toroidal drift) downward/upward?

When an ordinary train passes on a track, the track becomes hot. When a maglav train passes on a track, does the track becomes hot? Which is hotter, the maglav track or the ordinary train track? Is there a way to calculate the heat?