In reply to <[EMAIL PROTECTED]>'s message of Sun, 07 Jan 2007 17:10:27 +0000: Hi Charlie, [snip] >A particle accelerator ejecting a beam of particles moving >at near the speed of light which are made 100 times >heavier than rest mass by application of energy from the >accelerator will have the equivalent reaction mass of >particles moving at 10 times the speed of light. A >propulsion system producing relativistic proton beams and >relativistic electron beams may be more practical than a >propulsion system using extreme flux photon beams.
Where is the energy to accelerate the particles, coming from? Regards, Robin van Spaandonk http://users.bigpond.net.au/rvanspaa/ Competition provides the motivation, Cooperation provides the means.
