SONOLEVITATION
Installazione, Fantasia / Visionario, 10x100cm
CRONOSFERA FESTIVAL FIRTS EDITION 2008
artist :: Evelina Domnitch & Dmitry Gelfand
A 15 kHz standing wave is generated between a transducer and a reflective surface: two waves sharing the same frequency and amplitude propagating with a 180° phase shift in opposite directions. Where the two waves superpose, the acoustic pressure is cancelled out, resulting in the formation of pressureless nodes that occur at half wavelength intervals -- standing waves cannot arise unless they divide their medium into an integral quantity of half wavelengths. A high frequency, high amplitude standing wave, traveling through the air, creates tightly focused pressure fields that are strong enough to trap matter in the pressureless nodal cavities.
artist :: Evelina Domnitch & Dmitry Gelfand
A 15 kHz standing wave is generated between a transducer and a reflective surface: two waves sharing the same frequency and amplitude propagating with a 180° phase shift in opposite directions. Where the two waves superpose, the acoustic pressure is cancelled out, resulting in the formation of pressureless nodes that occur at half wavelength intervals -- standing waves cannot arise unless they divide their medium into an integral quantity of half wavelengths. A high frequency, high amplitude standing wave, traveling through the air, creates tightly focused pressure fields that are strong enough to trap matter in the pressureless nodal cavities.
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