Modern and Theoretical Physics

What happens to the radiation that passes through an objectmoving near light-speed through space? As we all know, the faster something is moving through space the slowerit is moving through time. If an object is moving at nearlight-speed, would the radiation enter the “ship”, pass through time slower asit is traveling through the “ship”, and thus re-emerge out of the other sideand continue passing through time at its previous rate? If so, wouldn’t it re-emerge broken offfrom its original path, meaning it is possible to “bend” and manipulatelight? Lets say a laser is shined at said object (and the object istransparent). The laser beam willenter the object a…

Can someone explain how the Casimir effect works? Thanks.

After much study of Einsteins relativity I realized he said all forces are the same thing, and, he gave us the ability to measure gravity with clocks, and the ability to measure acceleration with clocks, when will We wake up to the 21st century? Everything you do is picoseconds of time dilation, every existing piece of energy is a result of time dilation. When will physics start doing "time dilation"? is it just too far ahead of everyone? here is the simple Einstein equation t'= t/Sqrt 1- (v^2/t^2) I measured quantum gravitation of a fermion with it! the amount of gravity an electron has is equal to a days worth of gravity because it is so f…

Hi, I was wondering if anti-matter and supersymmetry come from the same thing or are related at all, because its seems they are both about opposite particles of our ordinary ones ?

"The bottom line is that CDF and D0 can now exclude (at 95% confidence level) the existence of a Standard Model Higgs particle over a fairly wide mass range in the higher mass part of the expected region: from 158 to 175 GeV. If the SM Higgs exists, it appears highly likely that it is in the region between 114 GeV (the LEP limit) and 158 GeV." http://www.math.columbia.edu/~woit/wordpress/?p=3073 New Higgs Results from the Tevatron Press release from Fermilab: http://www.fnal.gov/pub/presspass/press_releases/Higgs-mass-constraints-20100726.html So either the Higgs of the Standard Model does not exist or its mass is probably somewhere in the range of 114-158 GeV. …

When the LHC was starting up, there were some worries that a collision of two particles could form a bubble of "true vacuum", as opposed to the "metastable vacuum" that the universe is in today. This bubble would then expand outward at the speed of light, annihilating any matter that stood in its way. Studies later found that cosmic ray collisions, both past and present, took place at energies much higher than those that human-made collisions are capable of, which meant that the LHC is safe. However, sooner or later, humans will be able to create collisions that are as powerful as, and eventually more powerful than, naturally occurring collisions. Could one of tho…

What is the electromagnetic spectrum and its relationship to Photons. Why do we normally think that photons are only found within the electromagentic frequencies of color?. Is it because the photons interact with those wavelengths and thus are able to bounce into our eyes or something? In what ways to photons interact with frequencies outside of the color spectrum? What materials interact with alpha, beta, and gamma radiation? What materials can be excited by radiation to emit light? Is there a maximum saturation point of light within a space?

According to Fundamentals in nuclear physics: from nuclear structure to cosmology, by Jean-Louis Basdevant, James Rich, Michel Spiro (pg. 156), the Electric Charge distributions, of nucleons, are essentially spherically symmetric: Uploaded with ImageShack.us Where is the evidence of 3 quarks, in the aforegoing figures ?

Hi everyone! I am looking for some new books so I am interested in some good books about black holes, white dwarfs, neutron stars, magnetars and maybe theoretical objects like quark stars and so on. Not necessarily a technical reference book but books involving those, especially the quark stars would be great! Any suggestions?

I stumbled upon this thought a few days ago but lack the total understanding of the concepts of physics to fully grasp the idea. I was thinking about Nuclear decay within select elements such as nuclear grade uranium. When a uranium atom undergoes nuclear decay it creates heat energy and a(or many) neutrons break off of the atom and are free to hit other things in space, such as other atoms, thus creating a chain reaction. But i was wondering, is it possible to force the neutron into a different state? such as forcing it into a neutrino or even a photon? What would it take to force an elementary particle into another state? Lets just start simple, what is t…

Hi Was wondering if GUT symmetry is broken up via spontaneous breaking ? Or is it that we don't (really) know...

Hi, I was wondering if it is known what determines spacial dimensionality. As in, for example our 3D reality (of everyday) and up to the 11th dimension (in hyperspace) ? thanks.

I want to levitate a type 2 superconducting disk between two permanent magnets. One magnet is below the superconductor and one is above the superconductor. Here is a sketch. S magnet N N superconductor disk S S magnet N Is it possible? If the lower magnet is glued to a table and the upper magnet moved further up, would the superconductor move up or down?

I was wondering if it could be at all possible that what the super black wholes in the middle of galaxies take in, later comes out as dark energy which then moves out into the true vacuum - that of open space

Well, this is my first post and I want to ask if my simulation would be correct. Lets put a station near the sun, and one at the surface of the Earth. Let's use a new kind of webcam, one that uses Quantum Entanglement, in which it broadcasts the information and another recieves the information at the instance as the information was broadcasted. So they're having a discussion through the webcam then suddenly, the station near the sun explodes. The scientist in the Earth base peers through the telescope, only to find that it hasn't exploded. After 8 minutes of peering, they finally see the station explode. Is it possible that they peered forwards in time? Merged post…

I'm sure all of us have a pretty good idea of what time is, it seems so obvious, however whenever someone says "time" with relation to a question in this forum, what do they actually mean? As far as I can tell there are actually 2 forms of time: 1. space-time, which is symetrical, and its proceedings make sense equally well in forward and reverse. 2. the thermodynamic arrow of time, which relates to the overall trend for an increase of entropy and the expansion of the universe, this is asymetric. What theories are used to try and unite these 2 forms of time, are there any and how plausible are they? When space-time is influence by relativistic effect…

I just want to know is mass dependent upon the temperature i.e. if there is an increase on a temperature of any body then does its mass change or it really effects the mass of that particular body

What's the highest limit in numbers that we're able to count? Or the lowest (negatives?). Exactly. Infinities are supposed to reveal a problem with a theory. But infinities do exist. In counting of numbers, in light wavelengths, and in the measure of gravity strength. (...to name a few?) Does anyone know the problem with infinities, how that got started, and who decided it's a problem?

hi, i was wondering if schrodingers cat (paradox) would be classified as consciousness..

The diagram on: http://www.bnl.gov/bnlweb/pubaf/pr/2001/g-2_backgrounder.htm shows the muon decay occuring in the direction of the spin axis, but the text states that decay occurs in the direction of the spin itself (i.e. at 90 degrees to the direction of the axis); can someone tell me which is correct.

Hey, Could anyone explain to me just how a SBAA(Steerable Beem Antenna Array) works? I'm not quite sure how it works on the physics side or the physical side. I know that an Antenna Array is just a array of antennas aranged in a perticular patter and have length properties proportionall to thier frequency ranges. Such as the smallest antenna in the array has to be less than 1/2 the smallest frequency in size, and the largest being greater than 1/2 the largest frequency in the array. IE 2-4ghz. I'm not to worried about the Transmitt side of the stuff, i would just like to figure out how it recieves stuff. but if you would like to explain both..or all.. in detai…

Hello everyone. I've been a member for a while now, but have never posted a new thread. I guess I wasn't sure what kind of a response I'd get. But here goes. I am a physics enthusiast with no formal teaching/training. I have ready many books on the subject ranging from Quantum physics to Cosmology to Information science, etc. Anyway, I had some thoughts that I'm sure are thoroughly flawed, but was curious if you could help sort them out for me. Hopefully I can convey the idea properly, but unfortunately this might be long. Bare with me if you can. Don't be to hard on me, I'm a novice. Thanks in advance. The idea is based on the idea that as objects approach the s…

1. Does anti-matter have gravity? 2. If the universe expanded faster than light at its very beginning, then what caused all the stuff within it to slow down enough for any light to reach us from other sources?

Light is everywhere, it's said. But what about near the other side of an event horizon....wouldn't that have even less of it or anything/particles than the emptiest regions of intergalactic space?

Harnessing atmospheric electric discharge, lightning. Theoretically lightning can be harnessed by storing it in capacitors, which take electrical charges very quickly. Fit one pole of a capacitor to the ground and the other to an areal, high enough to attract lightning. So when a lightning strikes the areal, it should charge the capacitor. After that, disconnect the capacitor from the areal and the ground and use the electrical charge for anything useful. Practically, may capacitors have to be used to harness the lightning energy as much as possible when it takes place. Each capacitor have to be very large with overload protection and polarity charge detectors. T…