Quote:
Originally Posted by xelasnave
Poiny four Rob..I dont really understand it to be honest but these are the sort of questions I could look into if I could construct a computer model simulating push ..hence the original question about the math... I am thinking about a range of energies but thinking about it all I need is a dial to rev them up or down it is only P=P after all in 3d er 4d why not...
alex
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Point 4. Aberration.
Consider a radial line L, from the Earth to the Sun.
The Sun acts as a shield absorbing particles behind it along L. At any point in orbit, the Earth is pushed along L towards the Sun. As the Earth moves a small distance in this orbit, the particles pushing along L have a fairly instantaneous effect.
However, because of the larger distance to the Sun, the effect of shielding of particles by the Sun along the new line L will take considerably longer to influence the Earth at its new position i.e. the shielding is reduced. The net effect is to accelerate the Earth away from the Sun.
Regards, Rob