On Wed, Mar 25, 2015 at 2:46 AM, Sunil Shah <[email protected]> wrote:
This change in an electric field is caused by the same force that gives us > time dilation and apparent length contraction. This effect can’t be altered > any amount of energy. So by using it to generate thrust you are in fact > exploiting an infinite energy source. > This sounds hand-wavy to me. ;) Just like the belief that heavier than air flying machines are impossible. > No one realized that you could use air pressure to fly and change the > momentum of the flying machine by using its environment to absorb the > momentum. > In the case of a flying machine, you have the force of propulsion from the gas being displaced by a propellor or expelled by a jet engine and an equal and opposite force exerted on the engine itself, which moves the flying machine forward. The forward movement displaces air over the airfoil as well as beneath it, causing a vacuum to form above the wing in the former case and a downward thrust of air which pushes the wing up in the latter. Air is the medium that makes all of this possible. Just as today no one realizes that you can use the effects of relativity to > create propulsion. Namely, allowing the effects of relativity to absorb the > extra momentum of a system of moving charged elements. > Continuing the analogy, what is the medium against which the system of charged elements is alleged to exert force by exploiting effects of relativity? Eric
