Chapter II: The Gravity Projectile

Hermann Anderwelt had probably suffered many disappointments and waited long for a hearing. Now he seemed to feel that his opportunity had come, for he continued with growing enthusiasm:--

“Hitherto all attempts at space travelling have been too timid or puerile. We have experimented at aerial navigation, as if the brief span of air were a step in the mighty distance which separates us from our sister planets. As well might steamboats have been invented to cross narrow streams, and never have ventured on the mighty ocean! We have tried to imitate the bird, the kite, and the balloon, and our experiments have failed, and always must, so long as we do not look farther and think deeper. Every Icarus who attempts to overcome the force of gravity, which conquers planets, and propel himself through the air by any sort of apparatus, will always finish the trip with a wiser but badly bruised head.”

“Still, it has been freely predicted,” I ventured, “that this century will not close without the invention of a successful air-travelling machine.”

“And I alone have hit upon the right plan, because I have not attempted to struggle against gravity, but have made use of it only for propelling my projectile!” exclaimed the doctor triumphantly.

“But wait!” I interposed. “Gravity acts only in one direction, and that is exactly opposite to the one you propose to travel.”

“That brings me to the very important discovery I made in physics two years ago, upon which the whole success of the projectile rests. You will remember that, according to the text-books, very little is known about gravity except the laws of its action. What it is, and how it can be controlled or modified, have never been known. Electricity was as much a mystery fifty years ago, but we know all its attributes. We can make it, store it, control it, and use it for almost every necessity of life. The era of electricity is in full bloom, but the era of gravitational force is just budding.”

“Can it be that we have as much to learn from gravity as electricity has taught us in the last half-century?” I exclaimed, as my eyes began to open.

“I believe it will teach us far more wonderful things, because it will take us to unknown worlds, while electricity has been confined to Earth. Its realm is the wide universe. It will show us what life there is on the planets. It will make us at home with the stars.

“What!” he continued in a sort of ecstasy. “Do you think all great discoveries are over, all wonderful inventions made? As well might a trembling child, elated with the success of its first feeble steps alone, suppose it had exhausted all the possibilities of life. We are but spelling over the big letters on the title page of the primary book of knowledge. There be other pages and grander chapters further on. There be greater volumes, and sweeter, more expressive tongues which man may learn some day.

“Has a reasoning Divinity created the heavens and peopled the myriad stars with thinking, capable beings, who must be perpetually isolated? Or may they not know each other some time? But shall we attempt to sail the vast heavens with a paper kite, or try to fly God’s distances with the wings of fluttering birds? Nay; we must use God’s engine for such a task. Has He tied the planets to the sun, and knitted the suns and their systems into one great universe obedient to a single law, with no possibility that we may use that law for intercommunication? With what wings do the planets fly around the sun, and the suns move through the heavens? With the wings of gravity! The same force for minute satellite or mighty sun. It is God’s omnipotence applied to matter. Let us fly with that!”

“But will you permit me to suggest that we are soaring before the projectile is built?” I put in.

“Quite right. Let us come back to Earth, and return to facts. My studies in physics led me to believe that all natural forces--gravity, centrifugal force, and even capillary attraction--are, like electricity and magnetism, both positive and negative in their action. If they do not normally alternate between a positive and negative current, as electricity does, they can be made to do so. Gravity and capillary attraction, as we know them, always act positively; that is, they always attract. On the other hand, centrifugal force always acts negatively; that is, it always repels. But each of these forces, I believe, can temporarily be made to act opposite to its usual manner. I know this to be the case with gravity, for I have caused its positive and negative currents to alternate; that is, I have made it repel and then attract, and so on, at will, by changing the polarity of the body which it acts upon.”

“Now that I remember it,” I added, “our original ideas of magnetism were that it simply attracted. We knew the lodestone drew the steel, but only on better acquaintance did we learn of its alternating currents, attractive and repellant.”

“I have positively demonstrated with my working model that I can reverse the force of gravity acting upon the model, and make it sail away into space. I will show you this whenever you like. It is so arranged that the polarizing action ceases in three minutes, after which the positive current controls, and the model falls to the Earth again.”

“But have you ever attempted a trip yet?” I inquired.

“Oh, no. The model was not built to carry me, but it has demonstrated all the important facts, and I now need ten thousand dollars to build one large enough to carry several persons, and to equip it with everything necessary to make a trip to one of the planets. With a man inside to control the currents, it will be far more easily managed than the experimental model has been.”

“Suppose you had the projectile built, and everything was ready for a start,” I said, “what would be the method of working it?”

“I should enter the forward compartment,” began the doctor.

“But would you make the trial trip yourself?”

“I certainly would not trust the secret of operating the currents to any one else,” he remarked, with emphasis. “And will you accompany me in the rear compartment?”

“No, indeed; unless you will promise to return in time for the following day’s market,” I replied.

“Then I shall engage some adventurous fellow as assistant. First, we must set the rudder, which is both horizontal and vertical, so that the projectile can be steered up, down, or to either side. Having fixed it so as to be directed a little upward, I begin with the currents. Suppose the projectile weighs a ton, I gradually neutralize the positive current, which we are acquainted with as gravity. When it is exactly neutralized, the projectile weighs nothing, and the pressure of the air is enough to make it rise more rapidly than a balloon. When I have created a negative current, the projectile acquires a buoyancy equal to its previous weight. That is, it will now fall up as rapidly as it would previously have fallen down. It will not do to put on the full negative current at once, for we should acquire a velocity that would simply burn us up by friction with the atmosphere. However, the air is soon passed; if in the ether beyond there is very little friction, or none at all, we shall go at full speed, which will be the constantly increasing velocity of a falling body.