Jacques

Norman what do you think of Farsight soliton ? All what I readed about soliton, need some medium to work. Is vacuum some kind of medium ? Also,I readed a recent paper about the measurement or computation of the probality function of the photon and what was surprising is that in the middle of the photon the probability was negative... I tried to find that paper without success. Maybe someone here knows about it...

Thanks for your answers, the image I start to view is that of a fuzzy patch of energy travelling at c. The more energetic photon are smaller than the less energetic one... Am I on the good track ? Norman I find your paper very impressive, but I don't realy understand it. Can you describe it in more layman term ? Thanks Severian for the links but I don't have access to these papers. Can you give us some glimpse on the contents ? Thanks

That's what I was expecting for answer. But if all particles are point like, how can they interact ?

Hi I have a simple question: How does the QM and other mainstream physic theories describe the structure (topology...) of a photon ? Thanks

3. The moon seems to develop its atmosphere. If you look at a new moon, you will be able to see its entire outline. Completely false. The moon as no atmosphere. At new moon, you can se the entire moon because the earth reflect some light from the sun into the dark part of the moon. And it is not a new thing. It's been observed since man started to observe the sky. http://en.wikipedia.org/wiki/Planetshine#Earthshine

That is true without collisions. Collisions are necessary to create structures. If the volume in which the particles are spread out is 0 then no collision will occure. I think that why there is an need for quantum fluctuation in the BB model

What was the diameter of the universe when it was 380,000 years old ? How long does it take for light to go throught that distance ? Me too I am missing something....

Yes I see, but there is no need to start all points at the same point. The points can be spreaded in large volume of space and after some time the Hubble flow will emerge. Thanks for your answer. And yes I thought I was on something...

Speculation OK lets go! It is a kind of pseudocode, but don't wory you won't need to code to understand what I mean. Take [math]10^{100}[/math] identical sticky spheres with a 1 unit radius and 1 unit mass. Place them randomly in a finite space, give them random speed from 0 to .999 c and random directions. Defenitions: -Sticky: When two spheres toutch each other: --If the difference in speed is less than .001 c they will stick --else (>.001c) it is an elastic collision. -Momentum is conserved when 2 spheres stick together or bounced of each other. Let run the simulation! We cannot run a program with [math]10^{100}[/math] on all the computers on earth, but if you use smaller numbers you will be able to see that grouping occur and look like the expansion of space: take a group for reference, you will see almost all the other group going away from you and the further they are the faster they will go. No need of a bigbang with extreme density and temperature, to explain the hubble flow. Does it make some sense for you ? PS excuse my english I am doing my best

I also see gravity and space expansion as opposed force, but they are not of the same nature: Gravity is proportional to mass product space expansion involve no mass. Gravity follow an inverse square distance law, space expansion follow a direct distance law. I am not an expert but that is my 2 cents...

I don't understand what you mean by that ??? GR is a theory not a propriete of system... Could you explain? True, but it will be pulled more in the direction of the center of gravity of the cloud. Potential energy transformed into kinetic energy. On the way toward the center, some collisions will occur and some of the kinetic energy can be transformed into thermal energy, specialy around the center of mass where there will be more molecules. This thermal energy can escape the system in the form of electromagnetic radiation.

Doesn't the electron and the positron have the same spin (1/2) ?

I see that the right side of the equations give two opposite charge. Does it imply that the charge and the spin are corolated ? Thanks

Around new moon, it will rise around the same direction as the sun. at first quarter the moon rise around the direction the sun will rise in 3 month. For example next first quarter this month is the 20th and it will rise where the sun will rise the 20th of November. Full moon rise where the sun rise 6 month from now. That is why winter full moon go so hight in the sky. and last quarter where the sun was rising 3 month ago. It is not precisse but it can help figuring out

Not exactly... Yes for the zero. Take a look at http://en.wikipedia.org/wiki/Fahrenheit

Shygirl I think you should start by reading about special relativity (SR) before going into general relativity (GR). I think that you are confused about SR, because you didn't start learning from the basic. SR is build on the postulate that c (the speed of light) is constant. Read about the Michelson-Morey experiment. http://en.wikipedia.org/wiki/Michelson-Morley_experiment Basicly they thaugth that because of earth rotation, the speed of light will be faster in the direction of earth rotation than the speed in a direction perpendicular to earth rotation. But they found no difference in speed ! No matter the direction they mesure the speed of light, it is always the same. From there Einstein builded SR. I wont go to far into that for now . Hope that it will help you. wikipedia is your best friend

Second page third paragraph: Use the word refract instead of diffract

I see your point, but, I am not 100% sure, that topic was discussed in an other thread and the conclusion from expert was that this relativistic mass was not a gravity mass. For sure the moving mass will deform spacetime but it is only GR effect I think...

Sorry I don't understand exactly how SR affect space-time. If we observe a moving clock, we will see that clock running slower. That is a SR effect. The mass of the moving clock will create a deformation of spacetime. This is a GR effect. I never read about SR deforming spacetime or I am missing something ??? Thanks in advence for your clarifications.

http://en.wikipedia.org/wiki/Retrograde_orbit Retrograde orbits In the Solar system, most bodies orbit in a similar (direct) direction to the rotation of the Sun. All planets and most smaller bodies orbit the Sun counterclockwise as seen from a position above the Sun's north pole. The exceptions are mostly long-period and nonperiodic comets, which can have any inclination. Similarly, the larger and closer moons orbit their planets in the same direction as the planets' rotation, and so are also direct. However, the gas giant planets have large numbers of small "irregular" moons in highly inclined or elliptical orbits, thought to be captured asteroids or Kuiper belt objects (or fragments thereof), and the majority of these are instead retrograde: 48 retrograde to 7 direct for Jupiter, 18 to 8 for Saturn, and 8 to 1 for Uranus. One of the largest of these is the Saturnian moon Phoebe. Neptune is somewhat different: It seems to have captured its only surviving large moon, the retrograde but otherwise regular Triton, from the Kuiper Belt. The six irregular moons beyond Triton's orbit are evenly divided between direct and retrograde; some of these may be original Neptunian moons whose orbits were disturbed by Triton's capture, rather than being captured bodies themselves.

http://en.wikipedia.org/wiki/Tidal_acceleration the matter of the Earth, in particular the water of the oceans, bulges out along both ends of an axis passing through the centers of the Earth and Moon. The average tidal bulge closely follows the Moon in its orbit, and the Earth rotates under this tidal bulge in just over a day. However, the rotation drags the position of the tidal bulge ahead of the position directly under the Moon. As a consequence, there exists a substantial amount of mass in the bulge that is offset from the line through the centers of the Earth and Moon. Because of this offset, a portion of the gravitational pull between Earth's tidal bulges and the Moon is perpendicular to the Earth-Moon line, i.e. there exists a torque between the Earth and the Moon. This accelerates the Moon in its orbit, and conversely decelerates the rotation of the Earth.

12:30 because hongkong is not situated in the middle of his time zone Sinusoidal because the orbit of the earth is an ellipse not a circle

Agentchange told: How do you explain this flat universe if we see stars of unlimited distance in every direction? Flat doesn't mean flat like a sheet of paper in cosmology. Flat mean that the space is not curved. Someone else can explain more than me, but try wikipedia.

Thanks Martin I didn't readed the article yet but the abstracts are realy about what I thought. Next thing I am wondering, does it mark the end of dark energy ? How long will it take for that simple explaination to be accepted ? Will it be accepted ? I was able all by myself, only with logic, deduce that possible explaination about dark energy. If no cosmologist had thought about it, the chance that my idea survived is almost null. Thanks again Martin

Thanks Martin If you didn't told me that this article was related to my question, I would'nt know. I am happy to see that some cosmologist try to find other solution to the accelarating expansion, other than dark energy. I don't know the maths in the article, but I can understand that Einstein equation are for an homogenous universe, but the universe is not so homogenous...