Modern and Theoretical Physics

Hi, I’ve had a few questions that have bugged me forever (mech engineers don't talk to physicists very often) and the last one sparked my interest to register and post. 1: given that a very high energy state causes a merging to form electroweak force... and if you take black holes....add more matter, stars, other black holes, entire galaxies worth, say an entire universe worth, would that energy state they have be so high to cause a collapse of even gravity for a split second... (basically what if it didn’t start with a big bang, it just kind of collapsed into one) 2: this one I’m pretty sure has already been thought of and debated to death, but what if gravity is…

Is it conceivable that matter causes 'drag' in the flow of time which we perceive as mass? I have wondered this as: Photons are not subject to time as they have no mass so cause no 'drag' Gravity causes time to slow down Mass causes gravity Is matter/mass an effect of/on the passage of time?

This question may not belong in this section and may belong more so in quantum theory. however since this Q involves higher dimensions i thought this was probably the most appropriative section. But i was wondering, when its suggested that intelligences such as other intelligent beings, which are very advanced, live in higher dimensions... If quantum theory says that these higher dimensions exist only as tiny internal spaces literally smaller than an atom, then how exactly would advanced beings of any description be able to inhabit them.. My personal theory revolves around actually observational difference in terms of quantum histories etc, however this isn't importa…

Amongst the EW force-carrying bosons, it qualitatively seems like there is a progressive 'layering' of physical characteristics -- first, the Z0 boson gets mass (over photons); then, the W+,- get electrical charge (over Z0s). And, somewhat seemingly similarly, electrons look like neutrinos, that have 'on-loaded' a 'burden' of charge. And more, are there any particles, that have electrical charge, w/o mass 'first' ? Or, are there any (fundamental) particles, having color-charge, w/o electrical-charge 'first' ? So, is it possible, to quantify, this qualitative argument, for why neutrino's 'must' have mass??

I was wondering why exactly QG failed at being described by standard field theories and even QFT. Where exactly do the infinities come from/arise... or is it that each QFT is unique to the force which it describes..

In the perfect vacuum, there is no molecules in it, and the vacuum has no surround objects, i.e., too far away from the heat sources. As CMB theory, it is about 4K. Which one is correct 0K or 4K? If a vacuum is 4K, how can we drop the temperature to 0K?

The newest enounsement 18/6/2011 about temperatures at LHC collisons is 10^12Kelvin That temperatutes exist in neutron stars. In which depth they crash nucleus , I believe that they are close to planck length 10^-30.m

Here is a little problem I stumbled across from Bracewell's The Fourier Transform and Its Applications. I don't know the answer, so if anyone can help me out I would be grateful (this is just for self-study). I have a theory what the answer is like but I'm not altogether sure.

Can virtual particles come from nothing? If virtual particles can come from nothing, does that mean that something can actually come from nothing? And if some things can appear out of nothing then why can't the universe or God for that matter had come from nothing?

what is a time lens ? Is it what it sounds like or is it techno-speak? I'm sorry if this topic exists already. I searched and found nothing. This article about optics seems related. How similar are diffraction in space and dispersion in time? Does an event dispersed in time form patterns like diffraction? Just curious.

In the circuit attached, calculate the battery voltage. I know that V=IR, but I need help in figuring out how to use the 4 A. For the total voltage, its the sum of all of the resistance in the circuit multiply the current, but I don't know how to find out the current. Thanks.

Aperently, theoretically, with the use of wormholes and negative energy, and all that shtufff, it could be possible one day to create trips back in time. Here is an explaination of why i dont understand how this works: I would beleive that once traveled back in time, you would obviously do something that would change the path of the future. Now, in this new future, you might not creating a time machine, so you wouldn't have been able to change the past, so you would have actually created the time machine, and .... yeah. Looking past this problem, I would beleive that changing the past could create either a time machine earlier, or later. Now, if we loop back to…

I am wanting to understand in more detail the effects of a jacob's ladder arc on FM radio signals. I am an artist and am having a show next to a radio station and thought it could be thematically interesting to interfere with the radio stations signal. I would like to know any information regarding how this would be possible. thanks in advance.

People often say "speed of light in a vacuum" to further define a point of referrence. I'm wondering, could one say that the ground state of the electromagnetic spectrum is "mass at absolute zero" to further define a point of reference? also, does mass have weight at absolute zero? does mass experience decay at absolute zero?

I understand that the Higgs boson permeates all space, all the time. If time is space, then is it logical to assume that the Higgs boson is the very quanta of time? What is the difference between the Higgs and the gravatron? Is it possible that these two things reside in a subquantum space?

I understand that massless particles exist in infinite fields. I am wondering if there is a chart or a list of particles that share this infinite field. Also, I was wondering if an infinite field would require an ifinite rate of expansion?

Have a question on radioactive decay... Radioactive decay is due to isotopes. Isotopes are unstable atoms therefore produce energy via three particles; alpha, beta, gamma. The definition of an isotope, is a substance that has the same number of protons and different number of neutrons. Does this mean an isotope is "the same number of protons and different number of neutrons" compared to the values of that atom in the periodic table?

I'm currently siding with the opinion that information that does not have an effect on anything else, does not exist. Is this true (or false) based on definitions ("exist" etc) or scientific laws? Why I think it's true: - If it has or can have no effect on anything, then it doesn't matter if it exists or not (there is no difference in the observable universe), and it seems like existence would require such a thing, by definition. Why I think it might be false: - Conservation laws; symmetry etc. If you have energy and you lose it, you know by conservation laws that it is not destroyed, and you can deduce that it still exists. I don't think this is valid, beca…

Hi guys! First timer here looking for advice. I am currently working in translational research at lab in one of the top cancer hospitals in the world... the problem is although I love immunology I think my true love is physics research. I have been doing physics thought experiments my entire life and have always excelled at math. My problem is I know very little about the general research field besides CERN, LHC, and industry... I'd like to stay in the United States to do research. Could anyone shed light on this field? I love (in order): Cosmology & Gravitation Quantum Gravity Particle Physics Superstring Theory Thanks a ton!!

Hi All, An object appears white because it reflects all the wavelength of visible light while another object appears transparent because it allows all wavelengths of the light to pass through it. In both cases, no absorption of visible light occurs, hence under what circumstances would an object reflect all the wavelengths of light instead allowing them to pass through it? Regards Alfredo

As you know, positrons were predicted theoretically. They were necessary part of the theory and thus were supposed to exist. Often they say that bare particles absorb infinities and this makes the theory work. Some say they are predicted by the theory. I wonder whether somebody has ever been awarded for discovery of bare particles as such? Or this important discovery was left out?

Hi everybody, I am a newbie to the forum and I hope somebody can help me. I want to run some MD simulations for polymers and I need coordinate files in whatever format (xyz, pdb, etc.). All I find is for proteins. I ll appreciate if somebody can help me finding the files or a data bank for polymers. The specific polymers I am looking for are PVME, PVE, PVO, Thank you

Can anyone who has seen/read "Angels and Demons" tell me whether flying the antimatter high above Vatican City in a helicopter should have made any difference whatsoever, assuming the helicopter could even get that high that fast? I mean, wouldn't the shock wave from an antimatter explosion shatter everything for miles around, including buildings? Not to mention the fact that anyone anywhere near the 'blast' would most likely get fried by a massive flux of high-energy gamma rays rivaling a solar flare in intensity. Did Dan Brown just hugely drop the ball on this one? Or am I missing something?

Explosioin dynamics can be seen as fratal patterns through out all of reality and beyond. A star goes super nova and we see an expansion force that then cools and converts to an implosion force. During the conversion process some of the energy gains angular momentum. Angular momentum resits the implosion force that now has to go around the spinning force. On the surface of this foil their is friction that causes the charge fields to condense and press inward towards the low preasure center of the spinning force. ie. gravity A black hole is the epicenter of the contraction force, Dark energy would be the reminants of the expansion force and the gas clouds of the re…

According to this site, given the observed abundances of Deuterium, 3-Helium, & Lithium, Primeval Nucleosynthesis could have occurred, at almost any temperature, T < 500 MK, with next-to-no discriminative sensitivity beyond that. What is the cosmic abundance of neutrons (which would discriminate) ??