acoustic field
51акустическое поле — 1. Область существования акустических волн. Представляется в виде распределения амплитуды волны в пространстве. 2. Трехмерная структура излучения, полученная от источника акустической энергии. [BS EN 1330 4:2000. Non destructive testing… …
52Master Musicians of Jajouka Featuring Bachir Attar — Infobox musical artist Name = Master Musicians of Jajouka Img capt = Img size = Landscape = Background = group or band Alias = Origin = flagicon|Morocco Jajouka, Morocco Genre = World, Sufi music of Morocco Years active = 1950 – present Label =… …
53Fourier–Bessel series — In mathematics, Fourier–Bessel series are a particular kind of infinite series expansion on a finite interval, based on Bessel functions and as such are part of a large class of expansions based on orthogonal functions. Fourier Bessel series are… …
54Сферические функции — представляют собой угловую часть семейства ортогональных решений уравнения Лапласа, записанную в сферических координатах. Они широко используются для изучения физических явлений в пространственных областях, ограниченных сферическими поверхностями …
55The Master Musicians of Jajouka led by Bachir Attar — This article is about a musical group led by Bachir Attar. For the Morroccan band with a similar name, see Master Musicians of Joujouka. Master Musicians of Jajouka Origin Jajouka, Morocco Genres World, Sufi music of Morocco Ye …
56фокусировка акустического поля — Увеличение амплитуды поля на определенном расстоянии от преобразователя, достигаемое путем сужения сечения ультразвукового пучка. [Система неразрушающего контроля. Виды (методы) и технология неразрушающего контроля. Термины и определения… …
57Weighting filter — A weighting filter is used to emphasise or suppress some aspects of a phenomenon compared to others, for measurement or other purposes. Contents 1 Audio application …
58Self-focusing transducers — Acoustic waves emitted by ultrasonics transducer crystals exhibit a property known as self focusing (or natural focusing ). Note that this is distinct from the electronically controlled focusing employed in diagnostic ultrasound devices which… …
59Geophysical MASINT — is a branch of Measurement and Signature Intelligence (MASINT) that involves phenomena transmitted through the earth (ground, water, atmosphere) and manmade structures including emitted or reflected sounds, pressure waves, vibrations, and… …
60Naval mine — Polish wz. 08/39 contact mine. The protuberances around the top of the mine, called Hertz horns, are part of the detonation mechanism …
