![]() |
|
|
Thread Tools | Display Modes |
#30
|
|||
|
|||
![]() On 29 Jan, 09:16, "Max Keon" wrote: George, you have removed alt.astronomy again, perhaps by accident. Cross posting certainly should not be encouraged, but they have come along for the ride so far and it seems a bit pointless to kick them off the bus at this late stage. Don't you think? My ISP doesn't carry the alt group and I think its inclusion might be the cause of some of my messages being dropped. I would prefer to leave it of but add it back if you feel it is important. However, nobody from there has contributed AFAICS. "George Dishman" wrote in ... Max Keon wrote: George Dishman wrote: --- That means that whether we are looking at Mercury or Pioneer, we only need to consider the radial part of the velocity when working out the anisotropic force. Both the Sun generated radial component and the universe generated component are active simultaneously, but each component needs to be analyzed separately. Again I agree, what I am trying to do is get you to confirm which way the force acts so that we can do a basic analysis of a two-body problem. Once we have that, we can extend it to more complexe situations such as including the "rest of the universe". In the case of Pioneer, the universe generated anisotropy is the anomaly. I understand that part of your ideas, I just want to make sure I have correctly understood what you are saying for the direction of the anisotropic effect when a body is moving towards the Sun. Why can't you just say yes or no to whether I have that part right? These two, part paragraphs from the web page describe my meaning perfectly. ---------- According to the laws of that universe, the entire dimension surrounding every bit of matter in the universe is shifting inward into its own gravity well at the rate of (G*M/r^2)*2 meters in each second and is updated at the speed of light. Meaning that its acceleration capability diminishes to zero for anything moving at light speed toward its center of mass. The equation representing an upward moving mass relative to a gravity source is ((c+v)^2/c^2)^.5*G*M/r^2-(G*M/r^2), while ((c-v)^2/c^2)^.5*G*M/r^2-(G*M/r^2) represents a downward moving mass. ---------- Velocity is added to c for the up moving mass, and it's subtracted from c for the down moving mass. The reason for that should be very clear. This next paragraph, which followed the above, replaced the always positive velocity with a signed velocity, _on your insistence_. Velocity is _always_ signed Max, it is a vector. If you invent bizarre ideas like "always positive velocity", nobody will know what you are talking about unless you explain it and your new notation for dealing with the directional information that you have discarded. ---------- According to the conventional method of identifying gravity force direction, and the conventional method of identifying velocity direction relative to a gravity source, just the one equation is all that's required. But what it attempts to describe is not as clear. ((c+v)^2/c^2)^.5*(-G*M/r^2)+(G*M/r^2) --------- Perhaps I should have described how velocity is signed as well. v is negative for velocity away from a gravity source, and is positive for velocity toward a gravity source. But it was you who told me that George, so how can you be so confused? What I said was that v is the derivative of the radius r from the Sun so v = dr/dt and that is of course positive if the radius is increasing, i.e velocity is positive if it is _away_ from the gravity source and negative (because radius is reducing) if the motion is toward it. Now you teel me you are using the opposite convention. If Pioneer, or Mercury due to its eccentric orbit, is moving away from the Sun, there will be a gravitational effect which will slow that outward motion. There is only one effect but we can split it into two parts, the conventional effect given by GR or, to a reasonable approximation, by Newton's Law, and your extra anisotropic part. You have agreed that the extra part slows the object more, thus it shows up in Pioneer as an excess slowing of the craft, it isn't speeding up. I believe you don't dispute that, we are in agreeement. It is an indisputable fact that Pioneer is currently losing energy due to the effect of the anomaly and your equation says the same. If Pioneer never returns to this place in the universe, energy will be permanently lost in time (a long time) .. Pioneer is losing energy due to the anomaly today, and that is what your equation says for a body moving away from the Sun. That part is not in dispute, I just need to know what your theory says if Pioneer was moving towards the Sun, then I can do the analysis. As Pioneer moves away from the Sun in a normal system, it loses kinetic energy and gains potential energy. ... OK. (Don't worry about mass doubling, it just confuses things.) The anisotropy causes Pioneer to lose additional kinetic energy, which is converted to an equivalent in potential energy because the pull of gravity is increased by the anisotropy. _Nothing is lost_. I have concerns about that but let me accept what you say for the moment. The negative of that scenario must occur when Pioneer is in freefall directly back toward the Sun. ... OK , again forget mass changes. Pioneer's motion toward the Sun generates a gravity anisotropy which reduces the pull of gravity, ^^^^^^^^^ That's what I wanted you to confirm, thanks. so potential energy reduces and kinetic energy increases by falling at a lesser rate toward the base of the inflowing dimension. Again, _nothing is lost_. The kinetic energy of Pioneer increases because the force pulls it towards the Sun, but you just said the anisotropy _reduces_ that pull, so the speed (and kinetic energy) increases by _less_ than it would without the anisotropy. The effect of the anisotropy is to _slow_ the inward fall. Do you get it yet? Without the anisotropy, Pioneer loses some amount X moving outwards from radius R1 to radius R2 and would regain the same amount if it returned from R2 to R1. With the anisotropy, it loses _more_ than X moving outward because the pull is increased and regains _less_ than X moving inwards because the pull is decreased so there is a net loss in going from radius R1 to R2 and back to R1. Your description would imply the missing energy would remain in the form of potential energy but potential energy is a function of the radius and independent of the history so that doesn't work either. If you want the energy to be returned to Pioneer, the anisotropy would have to _increase_ the pull of the Sun when the motion was inwards, not reduce it as you said. If Pioneer was in orbit around the Sun, the anisotropy would reduce to zero at the orbit aphelion and perihelion, but its consequences enroute to each point still must be considered. Yes, a perfectly circular orbit would not decay in a two-body situation but energy is lost through the anisotropy en route between any two radii whether the motion is inwards or outwards. The Sun-Mercury gravity link is exactly the same. Yes, and so is the effect of any third body such as Jupiter or all the bits of "the rest of the universe". George |
Thread Tools | |
Display Modes | |
|
|
![]() |
||||
Thread | Thread Starter | Forum | Replies | Last Post |
30 Years of Pioneer Spacecraft Data Rescued: The Planetary Society Enables Study of the Mysterious Pioneer Anomaly | [email protected] | News | 0 | June 6th 06 05:35 PM |
The Pioneer Anomaly | Mark F. | Amateur Astronomy | 4 | December 25th 04 01:30 PM |
Pioneer Space Probe Anomalous Motion Explained | George Dishman | Astronomy Misc | 1 | October 13th 04 07:45 PM |
"Pioneer anomalous acceleration" and Cassini | Jonathan Silverlight | Astronomy Misc | 49 | November 18th 03 07:37 PM |