Modern and Theoretical Physics

I found this web page and I thinks it make a lot of sense ! I would like to have your comments about it. http://www.blazelabs.com/f-u-suconv.asp Thanks

What exactly are anti-elements, and do anti-elements have any specific properties that a regular element would not have?

I saw a part of discover magazine (march 2006, page 13) mentions strangelets and strange matter. Does anyone have any insite into what this is cause the article doesn't explain. Links are helpful but I'm really overbooked at school so I probably wont be able to read anything real long and involved. I'm just looking for a general idea of what strange matter is, why we think it exists and what research is being done on it. Thanks.

this thread is essentially a simpler version of the issue of my first thread: http://www.scienceforums.net/forums/showthread.php?p=240022#post240022 This is not a duplicate. It vastly simpler for the purpose of obtaining satisfaction of the primary question i want to understand better. If you have spinoff type info/ideas about other components of the question, please put those in the first thread. This thread has one question only. Can eternity end? Can something which has always been, suddenly degenerate into non-existence? If the universe has in some form always existed, is it logical that it would ever arrive at absolute death? Infinite regression, moving TOW…

Is the occurance of termination, evidence of a certain conception? The purpose of my pondering is to arrive at a conclusion about the history of the universe(s). Galaxies are not only fleeing the big bang, but doing so with acceleration. I suppose this is means it is all destined to end in some sense. Entropy increase until all imbalances are leveled to a static state. In my reasoning this end would mean a certain beginning, which doesn't make any sense. Something must have caused the beginning. Something must have begun that which began the beginning. There must be a continuum. An eternal history of that which spurred the next. If the universe is at all (whi…

Ernst Mach about time: It is utterly beyond our power to measure the changes of things by time. Quite the contrary, time is an abstraction at which we arrive by means of the changes of things. Albert Einstein about time: Space and time are modes by which we think, not conditions under which we live." Time--the time that we know through clocks and calendars--was invented. http://www.britannica.com/clockworks/article.html Roger Penrose about time: The temporal ordering that we 'appear' to perceive is, I am claiming, something that we impose upon our perceptions in order to make sense of them in relation to the uniform forward time-progression of an external…

MDT Cosmology MDT cosmology is a practical application of the MDT model. Some background for the MDT Model can be found under the topic Speculations, i.e., MDT Cube. To begin, there are two extreme states of the MDT model (CCC) and (000), or eternity and nothingness. The first has all three relativistic parameters at V=C implying infinite mass, distance and time relativity. Theoretically, this is all-inclusive and would include the finite universe, as well as all the other dimensions, parallel universes, etc. The second has all three relativistic parameters at V=0, and would define essentially nothing. This would be the state of our finite universe, before anything, i…

Why do superconductors act the way they do? Why do they have 0 resistance when everything else has atleast some how ever small? Also, Does this make the transfer of energy through superconducting cables 100% efficient? I would also like to know how can liquid helium act to flow against the pull of gravity - I find this facinating Cheers, Ryan Jones

Why is the plane of PPL rotated? What are the factors that lead to rotation in the planes of electric and magnetic field in the light??? is it electron density that causes this.Can this be related to quantum chemistry??? the plane of a photon!!!??? sounds weired , as i do imagine a photon as a spherical massless enegry packages. help required. hrushikesh

In biochemistry, we use devices which use the principle of surface plasmon resonance to study the binding between biological molecules. Even though I uses these machines, I'm still not to clear on how exactly they work. All I know that shining monochromatic, plane polarized light on a thin metal boundary between two materials with different indices of refraction generates a "evanescent wave" which will reduce the intensity of the totally internally reflected light at a specific angle, but I'm not exactly sure what the "evanescent wave" people talk about is nor why it reduces the intensity of the reflected light at a specific angle. Any clarification on these issues wou…

I've always wanted to make a cloud chamber. They look like simple devices, and seemed pretty easy to make. As I usually do when a project like this pops into my cluttered brain, I started making a shopping list. Plexiglass sheets, epoxy, metal plate, ... hold on a second! Why am I making this so complex? This are simple devices. How simple can I make one? At that moment, I decided I was going to make a cloud chamber in a Starbuck's cup. For the uninitiated--and I can't imagine there are many--Starbuck's is a mega-coffee shop chain. Think $5 "gourmet" coffee. Unfortunately, I'm addicted to their black iced tea, and I usually have three or four a week. The iced tea come…

Hi, I would like to know more about magnets. How do they work? One other question i had was is everything attracted to mangets? (if they were strong enough) There is protons and electrons in a wood atom but why doesn't a magnet attract/repeal that? basically, i want to know all about magnets. Tell me it in highschool/ freshman at college level knowledge.

I would like to share some interesting ideas that came to me last night about positive and negative charge. Positive and negative charge are two sides of the same coin, in the sense that both create electrostatic force but of the opposite sense. What is interesting is that both are integrated within the magnetic force. In other words, if a postive charge was moving left or a negative charge right, at the same velocity, it would be hard to distinguish them from the magnetic fields that would be created. So they are integrated by the magnetic force into something common to both. What is also interesting is that if one takes a positron and an electron they will attract,…

Dear all, This is my first post so before i say or ask for anything, I would like to thank the creators and contributors of this forum for creating such a wonderful bank of scientific knowledge on the Net. My humble knowledge of science have been bolstered ever since my discovery of this forum Thanks Back to the topic, I have just bought a 5kW induction cooker from China and I would like to modify it DIY style to get better performance out of it. However, I have some questions. I hope you guys can help me out here. From my readings (Wikipedia), I understand that an induction cooker transfers heat in 2 ways, 1) Magnetic hysteresis 2) Eddy currents. What it sai…

If light is composed of "packets of energy" (Quanta) then what gives light its energy too move? Does it use up its own energy or is this a combnationof my lack of sleep and flawed logic working again? Any help clearning this up for me would be most appreciated Cheers, Ryan Jones

I have slowly rotated a disk magnet above an identical disk magnet. The result: a sine wave. A graph of one peak and one vally per 360 degree rotation. The north poles are facing each other and are perfectly alligned. I am measuring repulsive force.Why is that? can anyone help?

Hello, I'm currently a High-school sophomore and I've come here because I've been so interested with the materials presented in these forums for so long, its just recently I've actually decided to become a member, however thats a different story. As matter of fact goes, I've got 1 month to provide evidence for something of "exceptional educational magnitude" in order to demonstrate my intellect and capacity to be deserving titlehood as an International Baccalaureate student. For those people that are not aware there are only 400 schools worldwide that offer this program and an extremely, EXTREMELY slim percentage graduate with the IB diploma. It is of extreme prestige…

What kind of particles are streaming through our atmosphere creating the Aurora Borealis? I'm thinking protons - is this right?

why do conductors have higher specific heat capacity than non conductors ??

So we've had 20 years of high temperature superconductors and I cannot help but ask myself why isn't my power cord made out it? In all this time you would expect some kind of applications to be coming through (excepting the odd industrial application). I assume the main prolem is with the engineering side of superconductors. What are the main problems in this field preventing superconductors appearing more often in our lives? Natski

Yay, so apparently one person has used loop quantum gravity/loop quantum cosmology to construct a discrete-time model of the universe. This is old (2001) and I don't know anything about it, so can someone fill in this poor layman about how this paper was received and if it has spurned any further developments in discrete-time models of the universe based around LQG/LQC? Martin, I'm looking hopefully in your direction... http://www.iop.org/EJ/abstract/0264-9381/18/6/308

A permanent magnet can be model as a solenoid. If I have a permanent magnet of 1 Tesla, how much current is that equivalent to? My guess is about 1x10^5 Amps. Is that right?

Hello! I know that beryllium acts as a neutron source when exposed to alpha radiation. What else exhibits this property? Are any other types of neutron reactions possible? For example, beta-neutron? Thank you! -Caver

http://www.nytimes.com/2006/01/15/books/review/15powell.html maybe a more concise and accurate review of Susskind's anthropic string theory landscape thinking was given by Nobel physicist David Gross http://www.math.columbia.edu/~woit/wordpress/?p=321 ----quote from Woit's blog----- The only physicist quoted who recognizes that the Landscape is pseudo-science is David Gross. “It’s impossible to disprove” he says, and notes that because we can’t falsify the idea it’s not science. He sees the origin of this nonsense in string theorist’s inability to predict anything despite huge efforts over more than 20 years: "People in string theory are very frustrated, as a…

We learned that gravity is the weakest force in nature. My thinking is that is might be not so weak. Maybe the apparent weakness of gravity is a consequence of the reference frame we use to mesure that force. I know that this idea look strange, but try to follow my reasonning. Usually we fix a reference frame to something material: the table in the laboratory, the earth, the sun, a space ship the center of the Milkyway... and we say this is the zero point from which we do our mesurement. But matter is only a small fraction of our universe, most of it is energy and dark energy, so is it a good idea to fix our reference frame on the material exception ? The universe i…