“How can we make propulsion without fuel?”
As it stands, the vast majority of propulsion machines are based upon fuel combustion technologies. However, this approach is costly, wasteful, and dangerous. So how could we make a new propulsion approach that requires no fuel? Well, let’s use our scientific mindset to find out. We know that when an electric current passed through a conductive material immersed in a magnetic field, it will experience a Lorentz force. So what if we were to use this force to cause objects to move? This is the fundamental idea behind electromagnetic propulsion, and can be used to power machines ranging from linear motors to the astronomical electromagnetic propulsion drives!