Physics

Just a passing thought: We know of several types of fields electromagnetic/gravitational,etc.Each one of these fields has some fundamental property which is required to create it (there are exceptions e.g. light is a combination of fields independent of a producing particle) .For example charge is required for an electric field,mass for a gravitational field,other types of fields also exit for other attributes. But is it possible to synthesize a brand new field (even theoretically) not simply make a composition of existing attributes. please note : I understand that fields are representations of interactions, and under this perspective my question still stand…

I was wondering, with Einstein's equations. Are they just like (basic) algebraic equations in maths, where you solve for the unknown variable, hence the "solutions" to Einstein's equations. Except that they are very complex and solutions for them revolve around (frontier) theoretical concepts in physics.. But why would Einstein have not worked it all out when he was doing them.. or is it that there are variables for which we are only now discovering and accounting for that he didn't.. etc

Do neutrons attract, repel, or have no effect on each other?

Although it is commonly accepted that physical laws and values of fundamental constants are the same throughout our universe, a recent finding, in which the fine-structure constant alpha has been found to vary by a small amount (1 part in 100,000) going from one end of the universe to another, i.e. surprisingly the variation seems to be unidirectional. Here's the web link to the news article on this: http://www.gizmag.com/laws-of-physics-may-vary-throughout-the-universe/16329/ Comments? (I'd wonder myself about some sort of systematic experimental error, but the article doesn't give details about the experiment.)

if someone were to melt down the ore thatis used to make magnets into a sphere, is it possible to make all the negative poles pointed toward the center and create a monopole on the outside? ( I know that the negative poles would repel each other, but if some thing had a strong enough pull, could it result in a monopole?)

What is really a string theory? What are the fundamental principles and how the final theory will look like (in terms of strings or other fundamental degrees of freedom)? what are the major obstacles (inherent to string theory) preventing us from identifying these underlying principles and constructing this unique framework or theory?

I think time and space are intertwined and cannot be separated. To confirm/verify, let me pose the following questions: 1. Is there some experimental data that proves that time is actually another dimension? Or maybe theoretical explanation? 2. Had anyone explained in detail what time is and why it is what it is? Or we just rely on some intuitive understanding of "time"?

the magnetic field of a magnet forms two half spiral that comes out from the N to the S but an electron's was a spiral that warps around itself, Why are there field lines different? Shouldn't they be the same since a magnet's field lines is basically made of electrons facing the same way?

do you have a 1-3 min video on force @ work? with explanation {: thankyou !

Regardless of if Steron are right in general, does this information seem accurate? http://www.steorn.com/images/asymmetry-and-energy-in-magnetic-systems.pdf

So I was thinking about the idea that light is pulled by gravity... if my understanding (the analogy of light in an accelerating elevator being treated as equivalent to light accelerating due to a force acting on it) is close enough to accurate my logic here should work. Ok, so basically energy is proportional to the product of mass and the square of the speed of light; this resembles the formula for centripetal force, which is proportional to the product of mass and the square of the speed of light, except also divided by the radius of the circle. So according to this logic, the centripetal force that pulls on a photon of light would be proportional to the ratio …

Ok, so supposedly white light is a combination of red, green, and blue light... but programs like MS Paint treat it like the amount of light goes from 0 to 255; in theory, could brightness of light be infinite? If so, would that imply that brightness of the components would be infinite? If so, then, would a better representation of light be a 3-dimensional graph, wherein one axis represents the intensity of red light, another the intensity of green light, another the intensity of blue light... and based on the intensity values for these three component colours, a position in 3-space on the graph would represent a particular colour, so as for colour to be seen as a li…

If diamonds are very good thermal conductors, transparent, but the cut of the diamond concentrates light (and its energy?), would a diamond laying in the sun get hot - and if so (or not) would an infrared camera be a decent way to find a lost diamond laying in the grass? Simply put, would a 2 carat diamond create a "hot" or "cold" spot in the display of an FLIR camera? FYI - I probably won't understand the reasoning behind why, so don't feel obligated to write a page and a half of explanation why - a yes or no with a brief description would be cool.

How many of the 700 or so numbered VFP errors can you successfully recover from programmatically, and allow execution to continue?

This fall I plan on doing a physics course which uses Mathematica; more specifically, a mechanics course involving differential equations. Some, but not many, of the computers on campus have Mathematica installed on them, so if I were to use Mathematica outside of class time, I would need to either have access to those computers, or to have access to Mathematica at home. I do not plan on buying the actual program, (I have not completely ruled that out though) but I have heard that they offer a trial version that lasts two weeks; if I start now this should give me time to familiarize myself with Mathematica before the semester starts, making that physics course a little bi…

Or somewhere between the two? One concern related to climate change is the notion that the melting ice caps would cause rising ocean levels to flood coastal communities. This is used as a reason to cut back on fossil fuel emissions, but there's also some uncertainty as to whether or not such cutting back would stop this problem. So why not address the global flooding issue more directly with a container of some sort? More specifically, my idea was that a large quantity of whatever material was practical for this (if any) would be formed into a gigantic container, filled with ocean water, and then tied to a space shuttle (or maybe a series of space shuttles) and ca…

I've been reading these two pages on Wikipedia and my head feels like it's spinning. I understand the whole concept of light being absorbed/reflected to create color (subtractive). And I understand what additive color is, but I don't understand how these two interact, or how to tell which is the one producing any given color you might see. For example, if I have a red shirt, how was it created? Is it absorbing all light except red, thus it looks red to me? Or was it created by *combining* colors to make red? (Although in that case, it would just be the single color red. But say the shirt is yellow. Is it absorbing all light except yellow? Or was the shirt made by comb…

www.FLRacing.co.uk Proving The Impossible!

I had been thinking lately about why moving magnet perpendicular to a wire causes electric current. my conclusion is that the changes in magnetic strength ignites the electrons to move since a magnet's strongest field comes from its N point and basically what a moving magnet is doing is changing its field strength. Please help me out if my logic is wrong since I haven't been taking physic since junior high

Particle decay is clearly some statistical process. Generally speaking, particles are some stable solutions of some physics (like a field theory) - they are some local/global energy minimums for given constrains like spin or charge. So from energetic point of view, particle decay should be getting out of some local energy minimum by crossing some energy barrier and finally reaching some lower energy minimum - just like in thermodynamics (?) Energy required to cross such energy barrier usually comes from thermal noise - in case of particle decay there would be required some temperature of vacuum ... Generally the universe is built not only of particles, but also can …

Hi! I am so confusing about the topics covered in waves and oscillations section of physics I am not getting the physical meaning phase phi,what is phi why it is important what is the phase velocity etc..?. Please explain me these concepts.. Any help would be appreciated..

What do you think about my new idea of "Bending Inertia", an object travelling at any speed can change direction by gently bending inertia. This comes from my driving skill "The Perfect Driving Line." I invented/discovered in year 2000 that a car travelling at speed can change direction while maintaining the same speed and can change direction sharply greater than 90deg. While in the car your whole body experiences a new feeling/force which I have called "Paul's Force" after myself. Paul Griffiths, Bristol. England. I would call it "Griff Force", but my older brothers nick name is "Griff". Because of this invention/discovery I have invented a new car technolo…

I just was wondering if there were any estimates out there, my googling skills have failed on finding me a sufficient answer......

I had heard that a common solar panel has about 20 to 30 percent efficiency. The reason was, as I had heard, the electrons only consume the visible part of the electromagnetic spectrum and reflect the rest of the light waves. But why is that so?

I, as the author of a reformulation approach, am interested in a constructive feedback from researchers capable of understanding the issues in question and interested in resolving the old physical problems in electrodynamics. Feel free to discuss and contribute to developing this specific direction at http://groups.google.com/group/qed-reformulation Regards, Vladimir Kalitvianski.