Clairaudience, the Philosophy of Its Expression: The Science of Its Practice, how to Commune with the So-called Dead

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Order of the White Rose, 1911 - Clairaudience - 67 pages
 

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Page 11 - It responds only to vibrations between 400 billion and 700 billion per second. The vibrations are too quick for the ear, which responds only to vibrations between 40 and 40,000 per second. Between the highest audible and the lowest visible vibrations there has been hitherto a great gap, which these electric oscillations go far to fill up. There has been a great gap simply because we have no intermediate sense organ to detect rates of vibration between 40,000 and 4,000,000,000,000,000 per second....

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