Acoustic Casimir Effect

機(jī)譯：聲卡西米爾效應(yīng)

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摘要

In 1948, Hendrick Brugt Gerhard Casimir predicted that two closely spaceduncharged conducting plates in vacuum would be mutually attracted. This attractive force is an indirect manifestation of the quantum electromagnetic zero point field (ZPF). When the indirect manifestations of the ZPF are interpreted as due to radiation pressure, acoustic noise can provide an excellent analog to investigate the Casimir effect as well as other effects due to the ZPF. Force measurements between two parallel plates are performed in an acoustic chamber with a broadband noise spectrum within a 5-15 kHz band and an intensity of 133 dB (re 20 %Pa). When the results are compared with the appropriate theory, very good agreement is obtained. Applications of the acoustic Casimir effect to noise transduction can provide new means to measure background noise. Because attractive or repulsive forces can be obtained by adjusting the noise spectrum or the plate geometry, a non-resonant method of acoustic levitation is also suggested.

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作者
Homes, C. D.;
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年度 1997
頁碼
總頁數(shù) 45
原文格式 PDF
正文語種 eng
中圖分類工業(yè)技術(shù);
關(guān)鍵詞
Electromagnetic fields; Acoustic signatures; Measurement; Vacuum; Spectra; Resonance; Broadband; Acoustics; Transducers; Parallel orientation; Chambers; Background noise; Force(Mechanics); Noise(Sound); Radiation pressure;

機(jī)譯：電磁場;聲學(xué)特征;測量;真空;光譜;共振;寬帶;聲學(xué);傳感器;平行定向;腔室;背景噪聲;力（力學(xué)）;噪聲（聲音）;輻射壓力;

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Acoustic Casimir Effect

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