Modern and Theoretical Physics

Are the tidal forces of a black hole that cause spaghettification strong enough to rip apart the bonds holding the atoms of the the spaghettified matter together? If so, what about the bonds of the nuclei? Can any non-elementary matter make it to the event horizon of a Black Hole? I'm thinking that it might be strong enough to cause fission, but not strong enough to break down all matter into elementary constituents since the amount of energy it takes to pull out a quark from a bound system is enough to create a partner for it to bind with.

Working on my fuel cells, I've got quite excited about how all them can interact, but there is one thing that I'm stuck on. The Mg(OH)2 made a fuel cell. What can you do with it? You can change it into MgO + H2O, H2O is useful for fuel cells, but MgO is not useful, however Mg would be, and O would be, too. Can you change MgO into Mg + O somehow?

Why don't positrons annihilate with electrons in a cloud chamber?

If somebody other civilisation on another planet started to look at the sky in great detail, what would they see coming from earth? Would all our radio waves and other such electromagnetic radiation be visible across several light years? Or would our planet just look like a ball of rock

What is the acceleration at the schwarzschild radius of a black hole? is it 3x10^8? ©? if it is, what is the acceleration at 1m below the radius? more than the c? of course gravity obeys a 1/r^2 law

Hello everyone! Let me begin with that I am not a student in physics, this is just of general interest. Everytime when I read about cosmic rays and transmutation, the only examples coming up are changes in the Earth's atmosphere. Look at this for example http://en.wikipedia.org/wiki/Cosmic_ray#Changes_in_atmospheric_chemistry My questions are: -Are there any limits on which atoms cosmic rays can transmutate? -Is the earths magnetic field limiting the reaction products of cosmic rays? -How about in space, are there any limitations there?

http://www.youtube.c...feature=related seems kind of interesting, though before I watched it I already knew that the way normal fusion and cold fusion occur are similar processes. When the wave-functions of the nuclei overlap such as in the sun where they are forced together greatly, they combine to form a bigger nuclei. With cold fusion though, it seems like you can dothe same thing but with very controlled amounts of energy as to increase the radius of the protons which seems plausible.

If I have a meteor of uranium, could it slam into the Earth with enough force to compress it and cause a nuclear explosion?

Please move if this is in the wrong forum. When/if the universe reaches the critical temperature for the Bose-Einstein condensate to form, what effects would this have to observation of the universe?

Does the principle of escape velocity apply to light? I'm a physics dummy, so I apologize if this sounds like a dumb question.

whats the difference between MWI , string theory, and the multiverse theory when it comes to parallel universes?

I understand, that a "glass" is an amorphous semi-solid, whose molecular monomers have not self-assembled, into an ordered crystalline structure. A "glass" is a kinetically locked, rapidly cooled state, wherein the material was "flash frozen" before it could self-assemble, into an ordered, structured, crystalline, solid state. I.e. in contrast to the amorphous liquid state, wherein the molecular monomers "stick & slip"; in an amorphous semi-solid glass, the molecular monomers "stick & grip" or "stick & lock". For example, glass is (essentially) amorphous semi-solid silicon dioxide (SiO2) (chemically identical to carbon dioxide (CO2), but much more massiv…

Dr. Roger Pielke, head of the American Association of State Climatologists, debunks the Butterfly Effect: http://climatesci.atmos.colostate.edu/?p=68 http://climatesci.atmos.colostate.edu/?p=70

Einstein's upside down pic on this months discovery magazine caught my eye earlier so I bought it read the article. Does anybody understand what it is that's different about his theory and relativity? And, what do you think?

Hello I am writing a project about inozing radiation. The aim of the project is to examine the nature of alpha, beta and gamma radiation and describe how they differ. As for now I have been blessed with good information from litterature and I have written a lot. However, I have got myself in a bit of a situation: My project is supposed to include practical measurings of radiation, where I measure some physical quantities of the radiation and compare them to the other radiations. The problem is I do not know what "physical quantities" I can measure and how to put the numbers I get in a context. For example the activity is "easy" to measure, or so I have heard, but I do…

Tomorrow I am going to measure how well different material is stopping beta and gamma radiation. I have not done this before, so what I need to know is, how do you use a Geiger counter? Do you simply plug it in or do you have to adjust something on it first? I would appreciate any help. Thanks in advance!

S=Speed C=3 x 108 ms-1 (speed of light) If S>C then E=M(C+(S-C)^2

We know that as well as energy we have negative energy which was created in the big bang. So for example your digging a hole in the ground. When you are digging, it the mass from in the ground will pile up while as you dig, the hole will loose mass as the pile gains mass. The principals of this give us [math]1[/math] which is the the universe (as we know from [math]E=MC^2[/math]. Now there must also be a hole which is [math]-1[/math] which can only be negative energy, as mass is energy. So if you add the two together it makes nothing. So the whole universe together must be nothing. But the thing is, energy is used and negative energy isn't so if the universe is loosing e…

More than 99.9% of the elementry particles are unstable of less than 10^-6 s life time. Is there any scientific theoretical justification?

The holographic universe is a fascinating concept but it appears to be based on one experiment in 1982 from which David Bohm derived his theory. Has Alain Aspect's original experiment been repeated anywhere? Can someone please explain (or direct me to an explanation) in "lay" terms the basis of this experiment. Thanks.

The first time I saw the movie "Tron" I though it was kinda lame. Then I saw it at the movies a while back and thought it was OK, I guess. But now I'm starting to wonder if we might soon make being's in cyberspace with consciesness and free will. We'll be programming the "matrix" for strange beings and we already are. Imagine the cyberverse that we've already created for them. They'd be able to quantum leap from a cartoon like farm to heavy artillary and not know the differece. They could also learn all about us by peeping at us through our phones and online information. Anybody else have thoughts about this?

The greater the gravitational field the slower time, the less gravity the faster the time. If a certain area in space could be cleared of all gravitational effects, how would that effect time?

I have a solution for the OPERA, ICARUS andSN1987a According To The Modified Special Relativity theory my solution is existed in http://vixra.org/pdf/1112.0071v1.pdf I hope to discuss my solution here

Could someone explain me how superconductivity works the way it does please ? I heard about fractal structures or one electron travelling with another so that there is no energy lost in the metal because of Joule effect... How is this possible ?

Reportedly, So, as molecules cool down, and "vibrate less", they "settle into" some stable cold condition, wherewithin they are "more receptive" to incident light ?? If so, then conversely, as molecules heat up, they "vibrate more", and their wave-functions "blur", "smearing out" in momentum-and-energy. Does that mean, that at higher temperatures, wave-functions are "constantly perturbed" into "blurred semi-excited states", which become only "partially present", at any single given "mono-chromatic" energy/frequency ?? Is that why high-T molecules "see less of the light" incident upon them, i.e. the molecules become "energetically blurred" and "detuned" from any …