Thornboldt's atomic polarization principle must be similar. Under terrific stress, the molecules of the repulsion plates, and their constituent atoms, were polarized in such a way that they exercised the force of repulsion. But when the stress was released, there would be no tempering to maintain the molecular set. They would--in a manner of speaking--snap back, like rubber bands released from tension, not quite to their original condition, but to a condition tending toward the opposite of that occasioned by the stress. The attractive property now inherent in the plates, in other words, was a reaction from the terrific stress of their momentary anti-gravity polarization. It was notable that there had been no interruption of the electrical power which supplied current for cooking and waste incineration, operated the air-purifying apparatus and refrigeration plant, and kept their lighting system in force. Evidently, Marlin decided, the storage batteries--if they had been drained of their charges prior to the impulse which hurled them into space--must have recovered, as batteries do when given a rest. He inclined also to the opinion that the sphere itself generated electricity through the expansion and contraction of the outer coating as it slowly revolved. * * * * * Sally appeared to avoid him after this encounter--or so Marlin imagined. He had a notion that she had been piqued by DuChane's pursuit of Norma, and wanted to show the man a thing or two by giving Marlin an opportunity to make love to her. His failure to rise to the bait had not endeared him to her. He told himself that he did not care--but, in truth, he felt his isolation. It was comforting even to have Pearl creep up to the periscope ledge beside him, as she did at rare intervals. He fell into the habit of talking to her, as a relief from the close-mouthed silence that had grown upon him. It was better, at any rate, than talking to himself, and helped him to orient his ideas. "Sometimes, Pearl," he confided, "I have a feeling that you sense what I'm trying to say better than I understand it myself. It's cockeyed--but a fellow develops queer fancies in a weird situation like this." She smiled amiably. "I even find myself assuming that you know what's behind all this. I suppose it's your air of calm assurance--or the lucky way you seemed to hit things back there on Earth. And here I go, with another screwy idea--that there is something behind it all." He applied his eye to the periscope. It was on the night side, and only an impenetrable expanse of blackness, studded with bright, unblinking points of light, rewarded his gaze. Relaxing, he faced the girl. "Reason tells me that we're the victims of a freakish accident. Yet I find myself assuming--" He checked the sentence, glancing around self-consciously for possible eavesdroppers. With a dreamy expression Pearl was looking at--or beyond him.