By Lewis Larmore (auth.), A. F. Metherell, Lewis Larmore (eds.)
This quantity provides the lawsuits of the second one foreign Sym posium on Acoustical Holography, which used to be held on the Douglas complicated examine Laboratories on 6 and seven March 1969, fifteen months after the 1st symposium. area used to be restricted to approximately a hundred and ten seats, with representatives from 9 international locations attending. those international locations incorporated Canada, England, France, Japan, Mexico, Scotland, Sweden, Switzerland, and the us. The symposium consisted of 21 formal papers. The 22nd, by way of Dr. U. Fehr, was once no longer learn, yet is incorporated in those court cases. The manu script of the fascinating paper on acoustic propagation in a turbulent medium which used to be learn by means of Dr. O. ok. Mawardi used to be now not acquired in time for ebook in those complaints, and we glance ahead to its booklet maybe at a later date within the open literature. as well as the formal papers there have been 3 casual shows on the finish of the assembly that have been given via Dr. A. Lohmann, via L. A. Cram and okay. O. Rossiter, and via T. S. Graham, that are additionally incorporated in those lawsuits. on the finish of the formal displays Dr. Lewis Larmore summarized the symposium and mentioned many of the highlights. For the symposium precis and a precis of those court cases the reader is stated bankruptcy 1.
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Additional info for Acoustical Holography: Volume 2
Moreover, by 43 Eikonal Theory of Bragg-Diffraction Imaging taking into account the angular spread of diffracted rays in the case where the incident light rays are limited to an angular aperture smaller than 2n, it is possible to estimate the resolution in the final image.! The results derived by ray tracing can be shown to be in agreement with the more exact wave theory. 2 Although the latter lends itself to more detailed and quantitative calculations, the ray-tracing method is frequently more useful in quickly providing insight into new imaging configurations.
By limiting the possible directions of illuminating rays, some of these images may be eliminated, as will be clear from what was said in the introduction. REFERENCES I. A. KorpeI, Visualization of the Cross Section of a Sound Beam by Bragg Diffraction of Light, Appl. Phys. Letters 9 (12):425 (1966). 2. A. KorpeI, Acoustic Imaging by Diffracted Light. 1. Two-Dimensional Interactions, IEEE Trans. Sanies and Ultrasonics SU-lS (3): 153-157 (1968). 3. M. Born and E. Wolf. Principles a/Optics, Pergamon Press, New York (1965).
H. Galburn, Propagation d'une Onde Sonore dans I'Atmosphere, Gauthiers-Villars, Paris (1931). 2. L. P. Solomon, D. K. Ai, and G. Haven, J. Acous. Soc. Am. 44 :1121 (1968). 3. A. B. , Macmillan, New York (1955). 4. M. Born and E. Wolf, Principles of Optics, Pergamon Press, New York, (1959). 5. A. Sommerfeld and 1. Runge, Ann. Physik 35:289 (1911). 6. M. Kline and I. W. Kay, Electromagnetic Theory and Geometrical Optics, Interscience Publishers, New York (1965), p. 12ff. 7. R. K. Luneberg, New York University Lectures 1947-48.
Acoustical Holography: Volume 2 by Lewis Larmore (auth.), A. F. Metherell, Lewis Larmore (eds.)