[EN] Diffraction at the upper edge of a two-dimensional periodic array of finite rigid cylinders immersed in air as well as the effect on its wave propagation properties are numerically and experimentally reported in this ...

[EN] The focusing properties of Fresnel Zone Plates (FZPs) against frequency are analyzed in this work. It is shown that the FZP focal length depends almost linearly on the operating frequency. Focal depth and focal ...

[ES] En este trabajo se cuestiona sobre la necesidad de uno de los instrumentos afines al trombón tenor, el trombón alto, que junto al bajo y el tenor, ha sido una formación la cual ha existido desde las primeras orquestas ...

[EN] In this work, we present a bifocal Fresnel zone plate (BiFZP) capable of generating focusing profiles with two different foci. The performance of the BiFZP is demonstrated in the ultrasound domain, with a very good ...

Objeto de aprendizaje orientado al entendimiento tanto físico como matemático del proceso de carga de una bobina o autoinducción en corriente continua, dentro de la unidad temática del Electromagnetismo. Este vídeo ...

El condensador es un elemento muy utilizado en electromagnetismo. Conocer cómo se puede descargar es muy importante para entender muchas situaciones reales. En este objeto de aprendizaje se muestra analíticamente cómo es ...

In this work we present the design and the manufacturing processes, as well as the acoustics standard-ization tests, of an acoustic barrier formed by a set of multi-phenomena cylindrical scatterers. Periodic arrangements ...

We show both experimentally and theoretically the evanescent behavior of modes in the band gap of finite phononic crystal (PC). Based on experimental and numerical data we obtain the imaginary part of the wave vector in ...

[EN] Zone plate lenses are used in many areas of physics where planar geometry is advantageous in comparison with conventional curved lenses. There are several types of zone plate lenses, such as the well-known Fresnel ...

[EN] The possibility of modulating the ultrasound beam produced by a transducer through lenses has become an important task. The fact that these lenses are flat, facilitates their design, construction and applications. ...