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Thunderstruck - Erik Larson [5]

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not a belief in ghosts, that first drove him to become a member of the SPR. The occult was for him just one more invisible realm worthy of exploration, the outermost province of the emerging science of psychology. The unveiling during Lodge’s life of so many hitherto unimagined physical phenomena, among them Heinrich Hertz’s discovery of electromagnetic waves, suggested to him that the world of the mind must harbor secrets of its own. The fact that waves could travel through the ether seemed to confirm the existence of another plane of reality. If one could send electromagnetic waves through the ether, was it such an outrageous next step to suppose that the spiritual essence of human beings, an electromagnetic soul, might also exist within the ether and thus explain the hauntings and spirit rappings that had become such a fixture of common legend? Reports of ghosts inhabiting country houses, poltergeists rattling abbeys, spirits knocking on tables during séances—all these in the eyes of Lodge and fellow members of the society seemed as worthy of dispassionate analysis as the invisible travels of an electromagnetic wave.

Within a few years of his joining the SPR, however, events challenged Lodge’s ability to maintain his scientific remove. In Boston William James began hearing from his own family about a certain “Mrs. Piper”—Lenore Piper—a medium who was gaining notoriety for possessing strange powers. Intending to expose her as a fraud, James arranged a sitting and found himself enthralled. He suggested that the society invite Mrs. Piper to England for a series of experiments. She and her two daughters sailed to Liverpool in November 1889 and then traveled to Cambridge, where a sequence of sittings took place under the close observation of SPR members. Lodge arranged a sitting of his own and suddenly found himself listening to his dead aunt Anne, a beloved woman of lively intellect who had abetted his drive to become a scientist against the wishes of his father. She once had told Lodge that after her death she would come back to visit if she could, and now, in a voice he remembered, she reminded him of that promise. “This,” he wrote, “was an unusual thing to happen.”

To Lodge, the encounter seemed proof that some part of the human mind persisted even after death. It left him, he wrote, “thoroughly convinced not only of human survival, but of the power to communicate, under certain conditions, with those left behind on the earth.”

Partly because of his diverse interests and his delight in new discoveries, by June 1894 he had become one of the Royal Institution’s most popular speakers.

THE EVENING’S LECTURE WAS ENTITLED “The Work of Hertz.” Heinrich Hertz had died earlier in the year, and the institution invited Lodge to talk about his experiments, a task to which Lodge readily assented. Lodge had a deep respect for Hertz; he also believed that if not for his own fatal propensity for distraction, he might have beaten Hertz to the history books. In his memoir, Lodge stopped just short of claiming that he himself, not Hertz, was first to prove the existence of electromagnetic waves. And indeed Lodge had come close, but instead of pursuing certain tantalizing findings, he had dropped the work and buried his results in a quotidian paper on lightning conductors.

Every seat in the lecture hall was filled. Lodge spoke for a few moments, then began his demonstration. He set off a spark. The gunshot crack jolted the audience to full attention. Still more startling was the fact that this spark caused a reaction—a flash of light—in a distant, unattached electrical apparatus. The central component of this apparatus was a device Lodge had designed, which he called a “coherer,” a tube filled with minute metal filings, and which he had inserted into a conventional electric circuit. Initially the filings had no power to conduct electricity, but when Lodge generated the spark and thus launched electromagnetic waves into the hall, the filings suddenly became conductors—they “cohered”—and allowed current to flow. By tapping the tube

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