Vibration is everything: If you want to find the secrets of the universe, think in terms of energy, frequency and vibration. Nikola Tesla

In 1897 the device was ready and in 1898 he supposedly managed to oscillate his laboratory at 48 E. Houston St., New York, enough, that alarmed neighbors called the police and ambulance, fearing an earthquake happening. Tesla later explained this principle to reporter Allan L. Besnson, who published in February 1912 an article about Tesla's resonator in The World Today magazine:

"He put his little vibrator in his coat-pocket and went out to hunt a half-erected steel building. Down in the Wall Street district, he found one, ten stories of steel framework without a brick or a stone laid around it. He clamped the vibrator to one of the beams, and fussed with the adjustment until he got it.

Tesla said finally the structure began to creak and weave and the steel-workers came to the ground panic-stricken, believing that there had been an earthquake. Police was called out. Tesla put the vibrator in his pocket and went away. Ten minutes more and he could have laid the building in the street. And, with the same vibrator, he could have dropped the Brooklyn Bridge into the East River in less than an hour."
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If you want to find the secrets of the universe, think in terms of energy, frequency and vibration.
Nikola Tesla