8. Yet another way to produce motion in an electrical car: Instead of using electricity to drive the wheel, we could use the repulsive/attraction force between charges/Magnetic Polarity to indirectly produce rotation in the wheel. It is a much more effective way of utilize electricity since theoretically the repulsion and attraction force does NOT take away any electrical/Magnetic energy from the source(unlike existing method directly use electrical energy against friction), thus dramatically cut down the energy expenditure per km. So now it doesn’t require a large battery.
9. Drilled a spiral tunnel from the bottom to the surface of a solid. Gentle place the bottom into a fluid, you will then see it is slowly rotating in the process of sinking. The general concept is to use the alignment of space inside a solid to direct fluid to the place so the reaction force would move the solid in the way we desired. Obviously, we extracted energy from the liquid via interaction with the solid, so we don’t need external energy to sustain its motion. Now imagine if engrave the surface into appropriate form, what will happen? The liquid is pushing itself into motion with its own energy!
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