[uncountable]theactionorprocessof light,heat, or sound beingthrownback from asurfaceCOLLOCATIONS–Meaning 3: something that shows what something else is like, or that is a sign of a particular situationadjectivesan accurate/true reflectionThese reports were not an accurate reflection of existing ...
Journal of Sound & VibrationE.J. Brambley, G. Gabard, Reflection of an acoustic line source by an impedance surface with uniform flow, J. Sound Vib. 333 (21) (2014) 5548-5565.E. J. Brambley, G. Gabard, Reflection of an Acoustic Line Source by an Impedance Surface with Uniform Flow,...
The meaning of REFLECTION is an instance of reflecting; especially : the return of light or sound waves from a surface. How to use reflection in a sentence.
the ratio of the radiant flux reflected by a body to the radiant flux incident on it. The concept of an amplitude reflection coefficient, that is, the ratio of the amplitudes of the reflected and incident waves, is sometimes used —for example, for radio waves. In general, the reflection ...
The noisy sound propagated from the machinery should be reduced to maintain silent environment around the machinery. To achieve such the requirement, the nearfield acoustic holography (NAH) has been developed for sound source localization, and the information of the source locations is utilized to ma...
D is true; convex and plane mirrors always form virtual images; concave mirrors will form virtual images of objects placed between the focal point and the mirror. E is false; while virtual images are not real, they can be seen if sighted at in the mirror - just consider your plane mirr...
6.2.2 Sound reflection Recall the concept of acoustic impedance mismatch introduced in Chapter 5. This is relevant when energy such as sound propagates through materials of different densities. The propagation of energy is highly dependent on the medium in which it travels. The square of the refl...
The fine manipulation of sound fields is critical in acoustics yet is restricted by the coupled amplitude and phase modulations in existing wave-steering metamaterials. Commonly, unavoidable losses make it difficult to control coupling, thereby limiting device performance. Here we show the possibility of...
of air with density ofρ0 = 1.21 kg m−3and speed of soundc0 = 343 ms−1. Figure1bshows the details of the supercell, which includesmunit cells with widths ofa(=p/m), and each unit cell is made of sound-hard material (gray area) perforated by a slit (blue ...
of wave growth and breaking; however, high-frequency techniques are limited to ranges of a few hundred meters. For the low-frequency sound (10–150Hz) of the seismic profiles, scattering theory is inappropriate, because the wavelength of the sound is much larger than the length scale of commo...