Modern and Theoretical Physics

Does proton decay produce quarks and other elementary particles and what is the time frame involved ?

This is a rather theoretical question, but is it possible in physics to have a description of reality which does not consist of particles but only fields. Or are fields always defined in such a way that particles must exist? The problem I think is that at the very fundamental level of physics, we have matter/particles defined in terms of spacetime, and spacetime defined in terms of matter/particles. You can not define one without the other. To measure something in empty space is impossible, and likewise, to define particles without spacetime is also impossible.

Predicted Heat Death of the Universe In his thought provoking documentary “Wonder of the universe” (https://www.youtube.com/watch?v=Uu-tJmRxcVw ) Professor Brian Cox explains the thinking behind current predictions for the “Heat death of the universe”. He explains the predictions through the effect of the second law of thermodynamics whereby the universe gradually moves from an ordered state (low entropy) to a state of disorder (high entropy). He states: “The last remaining matter in the universe will reside within black dwarves. We can predict how they will end their days. The last matter of the universe will evaporate away and be carried off into the void…

We know that light slows down inside a dense medium like glass, water, etc. But the moment the light beam gets out of the dense medium to vacuum, it regains the original speed c instantaneously. I know that waves doesn't require acceleration to travel in a particular speed but as light also behaves in particle nature ,shouldn't it obey the laws of particles too ?

Is it feasible to produce an electron-electron collider and would such a collider produce neutrinos ?

Is there any meaning for this term "Total Energy of the whole universe" ?! and if yes, what is the frame of reference relative to it this should be calculated ?!

Dears, I want to publish a thought experiment involving Compton scattering. In which magazine or letter or conference you advise me to publish? Many thanks Ahmed Kamal

Dears, I ask about Enegy conservation in non-inertial frames of reference, my knowledge is that it is not conserved in such frames, is this correct? and if it is correct, is their any contraints on the frame that make it conservative in termes of energy? Just a question that I thought in it a lot. Thanks Ahmed

Does the distribution of elementary particles in the Universe presage the age of the Universe ?

I was thinking about photons, well actually about their apparent properties, which led to gravitational effects. Which then led to black holes, and eventually to questions about movement. The basic question, why does a black hole move? If it was moving when it formed, and there is no reason to think that it wasn't, I expect a predictable movement in that it has momentum. It seems to me that it would take a tremendous amount of energy to effect it's course. This seems to suggest that patterns should exist? But, then I start to think that if the black hole was part of a system when it formed, then I should think it's effect on the system, or the systems …

It would be nice to use Wikipedia in research papers because its quality has increased a lot since it was first developed. However, because of its history of inconsistencies and letting anyone edit any article, I am not sure if it is accepted as a credible source of information by the scientific community.

Sound travels at 343.59 m/s , light travels at almost a million times that. So could we hear music at light speed?

I wanted to learn about 4d space and got curious why I cannot visualize it so I searched in the internet for some answers. I am not satisfied by how it is explained, especially the flatlander's theory. First of all, how can a 1d or 2d object exist? Lets take 1d for an example. Its called 1d because it only has length and no width. How can you see a line that has no width, even the slightest width and the slightest height? Okay, 3 dimensions might be needed to do the math but in reality , are dimensions real? And our theory about 4d, 9d and 25d might be just helping quantum physics and string theories but I dont think it's actually there.

I have been pondering various elements of string/M theory and have become fascinated by the required additional dimensions. As I understand for the theory to be viable, there must be between 9, 11 or even 25 coexisting dimensions; including our familiar dimensions of height,width, legnth and spacetime. The remaining dimensions are something of a mystery, as they dont share any of the properties of those we all know. How in essence, would one even begin to describe them?! I understand there may be entire dimensions the size of an atom, and others crumpled on themselves like a piece of paper. That, or even dimensions which are unseen "base requirements" for our known 4 …

From one perspective light in it's component colors represents am increase in entropy. However a color could be thought of as an aggregation of similar pixels to create the notion of color, which represents a decrease of entropy. Which of these views is correct ? Please opine.

Hello My Name is Andrew, this is my first post on the forums as I am pretty passionate on the topic of Theoretical Physics. The link will direct you to a comment-able file. Please keep in my this is my first draft and some of it will be hard to understand. Sorry in advance all feedback, good and bad are welcome. Thank you. EDITED: My theory on Time Travel will be expressed bellow. Knowing that the universe is constantly expanding from the Hubble Constant Law.(https://www.cfa.harvard.edu/~dfabricant/huchra/hubble/ ) . The theory on the Bose Einstein Condensate, (http://www.colorado.edu/physics/2000/bec/what_is_it.html ) and the Penning Trap, ( http://en.wikipedia…

Is it posible to increse the speed of light,if light waves pases black hole,not too close,not too far.. just using black holes gravity?!

please think outside the box. this is in the theoretical physics section for a reason. heres a brief overview "Atoms are made of subatomic particles that have mass. A photon is a massless packet of electromagnetic waves. A photon is considered to be a particle if light travels in small intensities. Research Planck's theory of light as well as Einstein's Photoelectric Effect."

http://forum.nasaspaceflight.com/index.php?topic=37443.0 Study into curvature of Space-time may influence perfection of EM-Drive. A Team of Researchers from the VortexSpace community, in affiliation with Marko Rodin - have derived a curvature of a Conic Shape similar to "Neile's Parabola". (The final resolution in 3D to Gravity to Neile’s parabola ( http://www.2dcurves.com/cubic/cubicn.html). Solved by a conic! The solution to the curvature of space-time as solved by a re-derivation of Pi. Please review the following PDFs and save a copy of the ZIP archive: http://vortexspace.dropmark.com/242121 http://vortexspace.dropmark.com/242121.zip vortexspace-water-…

I have been thinking what would happen if two black holes collided? Well I've been thinking about It what if it could have so much gravity that it could rip the space-time? So you measure both black holes gravity then you can add them then measure the effect on the space-time.

If I shine a torchlight towards the moon, 90% of my light beam would be filtered by the atmosphere. Only 10% would reach the moon. Then, the light actually dispersed due to Heisenberg`s Uncertainty Principle. If so, does this mean light doesn`t travel in a straight line because there is a probability in which photons actually exist because it has a very high probability of existence? I mean photon may exist in anywhere within the probability region but not in a straight line motion then.

Pretty - much everyone knows that most stars run on nuclear fusion,but what if there stars that used nuclear fission? ..............................

If I was to take a line, that would be considered to be the first dimension, only travelling in its designated position. Vertical or Horizontal. If I was to take this line and stack them one against another I would create a plane. The second dimension, a point would be able to travel vertical and horizontal. Now if I was to take all of these planes and stack them on top of one another I would create a Prism, the third dimension. Where a point can travel on the y-axis, x-axis and z-axis. But if I was to take this cube and stake it on top of another cube again and again, wouldn't I as well get a line? So what is really the fourth dimension? As there is no new axis created d…

Hello folks, I wanted to check my current understanding (or complete lack thereof) of the Higgs mechanism. I remember that back in high school, we learned that light slows down inside a material. I couldn't believe it, as waves in the solutions to the wave equation should travel at constant speeds. I later figured, that I did not take into account the formation of new waves while the original wave travels through the material and shakes the electrons it encounters. These new waves are part of the same entity we call the EM field, and so they should all be summed up together with the original wave, as the superposition property of the EM field suggests. Then, I tho…

I was in a chatroom with some friends coding and we got talking about the universe and infinity and I said the following approx. 1hr before this post. Im just wanting to gather everyone's thoughts on it and if someone else has proposed this before and if so who and when. Thanks in advance, cmdpwnd [i also posted this on stack exchanged and they were pricks which is why I came here] ^that's retarded. take the balloon effect for example, a balloon is completely sealed as it inflates until the pressure is great enough to break the seal from its expansion. This principle would tell us that the matter stayed consistent and that it was continually distributed acros…