Download or read book Finite Amplitude Noise Diffraction of an N Wave by a Circular Aperture and Vertical Propagation of Finite Amplitude Waves in the Ocean written by David T. Blackstock and published by . This book was released on 1974 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: Basic research on finite amplitude sound waves has been carried out during 1973-74. The following three separate projects are summarized: propagation of finite-amplitude noise, diffraction of an N wave by a circular aperture, and propagation of plane waves of finite amplitude in inhomogeneous media with applications to vertical propagation in the ocean.
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1975 with total page 970 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Download or read book Government Reports Announcements written by and published by . This book was released on 1975-03 with total page 898 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Government Reports Announcements Index written by and published by . This book was released on 1975-04 with total page 930 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Finite Amplitude Sound Propagation in the Farfield of Nonuniform Sources I The Diffraction of N Waves by a Circular Aperture in a Plane Baffle II written by James C. Lockwood and published by . This book was released on 1971 with total page 167 pages. Available in PDF, EPUB and Kindle. Book excerpt: In part 1, a solution for the farfield propagation of finite-amplitude waves from nonuniform sources is presented. This solution was obtained by applying the method of multiple scales to solve a second-order, lossless, nonlinear wave equation. The solution represents a generalization of the solution Earnshaw gave for plane waves. In part 2, a solution of the linear wave equation is presented for the diffraction of plane N waves by a circular aperture in a plane baffle. Analytical results are obtained. Because of their complexity, a computer has been used to draw the waveforms. For the case when the observation point is in the beam, the observed waveform is composed of the incident signal plus a diffracted signal. The results show that as the observation point is moved off the axis, the diffracted wave quickly degrades to a low-level signal because of the reduced coherence of the signals from the aperture edge. The theoretical results, modified to apply to an incident spherical wave, agree very well with experimental results obtained by using a spark-produced N wave incident on an aperture. (Author).
Download or read book Government Reports Annual Index written by and published by . This book was released on 1975 with total page 882 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Applied mechanics reviews written by and published by . This book was released on 1948 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Government reports annual index written by and published by . This book was released on 199? with total page 992 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Government Reports Index written by and published by . This book was released on 1975 with total page 1014 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The propagation of a spherical N wave in an absorbing medium and its diffraction by a circular aperture written by Mark Owen Anderson and published by . This book was released on 1974 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt: The report investigates the effects of finite amplitude on the diffraction of a spherical N wave by a circular aperture. The investigation was to be carried out in the farfield of the aperture, i.e., where the incident and diffracted signals were not completely resolved. An experiment was done in which an N wave was produced by an electric spark. A condenser microphone received the acoustic signal, and an aperture in a rigid baffle was placed between the spark and the microphone. The preliminary investigations revealed that, in the farfield, absorptions as well as nonlinear distortion is important. A computer algorithm was developed in which the effects of nonlinear distortion and absorption are combined in a stepwise manner. To test the algorithm, it was used to predict the waveform of a propagating N wave. The predicted waveforms agree very favorably with experiment. (Modified author abstract).
Download or read book Finite Amplitude Waves in Liquids and Solids written by and published by . This book was released on 1963 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Comprehensive Dissertation Index written by and published by . This book was released on 1973 with total page 944 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Comprehensive Dissertation Index 1861 1972 Physics M Z written by Xerox University Microfilms and published by . This book was released on 1973 with total page 936 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Physics Briefs written by and published by . This book was released on 1991 with total page 1454 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Proceedings of the IRE written by Institute of Radio Engineers and published by . This book was released on 1962 with total page 1206 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Proceedings of the IRE written by and published by . This book was released on 1962 with total page 1248 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Proceedings of the IEEE written by Institute of Electrical and Electronics Engineers and published by . This book was released on 1956 with total page 1180 pages. Available in PDF, EPUB and Kindle. Book excerpt: Vols. 34- include section: Waves and electrons.
