Benjamin Marlowe was bending over the apparatus almost instantly. A moment later he raised a face that had suddenly gone white. There was terror in his eyes as he turned to his assistant.
“The entire second series of coils is burned out, Larry!” he gasped in consternation. “Joan is marooned over there in Arret—marooned in that grim unknown land as completely beyond our reach as though she were upon one of the moons of Mars!”
For a long moment the two men gazed at each other with horror-stricken faces, dazed and shaken. Then they quickly drew themselves together again and set about the herculean task of making the necessary repairs to the damaged mechanism in time to rescue Joan before the twelve-hour limit should doom the girl to forever remain an exile in that land of alien mystery beyond the atomic barrier.
Their previous experiments with animals had proved that no living creature from Earth could be brought back after it had been in Arret over twelve hours. After that time the change in the atoms constituting living tissues apparently became permanently Arretian, for the Silver Belts returned without any trace of their original wearers.
The necessary repairs to the damaged coils were of such an exacting and intricate nature that any great speed was impossible. Hours passed while the two men bent to their work with grim concentration. Neither of them dared think too much of what nameless dangers might be confronting Joan during those weary hours. Their actual knowledge of Arret was so pitiably slight.
Some months ago, while they were experimenting upon apparatus for reversing the electrical charges of an atom’s electrons and protons, they had first stumbled upon the incredible fact that such a place as Arret really existed. They found that it was another world occupying the same position in space as Earth, with the fundamental difference in the two interwoven planes of existence lying in the electrical make-up of the atoms that constituted matter in each plane.
On Earth all atoms are composed of small heavy protons that are always positive in charge, and larger lighter electrons that are always negative. In Arret the protons were negative, and the electrons positive. The result was two worlds occupying the same space at the same time, yet with matter so essentially and completely different that each world was intangible to the other. They had named the unseen world Arret, the reverse of Terra.
Finding it impossible to work directly upon most forms of matter, the experimenters had finally evolved a silver alloy that served as a medium both for sending objects into Arret and then bringing them back to Earth. By focussing the flame of the projection apparatus upon a Silver Belt of this alloy, the electrical charges of the Belt’s atoms were reversed, automatically causing the Belt to vanish from Earth and materialize in Arret. At the same time the atoms of any object within the Belt’s immediate radius were similarly transformed, and that object was taken into Arret with the Belt.
The recall mechanism functioned by broadcasting a power wave that again reversed the atomic charge of the Belt and its contained object back to that of Earth. At the same time the recall wave exerted an attractive force that drew the atoms back to a central point in the laboratory, where they were re-materialized upon the same floor-plate from which they had originally been sent.