نتایج جستجو برای: irregular reflection and refraction
تعداد نتایج: 16840622 فیلتر نتایج به سال:
Diagnostic ultrasound has been widely used in clinical applications, such as soft tissue abnormality detection and blood flow detection. However, due to the complexity of ultrasonic wave propagation and scattering in biological tissues which generally involves wave reflection, refraction, scattering, absorption and other wave phenomena, it has always been a rather difficult task to interpret th...
§1.1. The method of characteristics §1.2. Examples of propagation of singularities using progressing waves §1.3. Group velocity and the method of nonstationary phase §1.4. Fourier synthesis and rectilinear propagation §1.5. A cautionary example in geometric optics §1.6. The law of reflection §1.6.1. The method of images §1.6.2. The plane wave derivation §1.6.3. Reflected high frequency wave pac...
We present the discrete analog of Snell’s refraction law at the interface between two dissimilar waveguide arrays. Additionally, reflection and transmission coefficients for the Bloch waves are derived analytically. The theoretical findings were confirmed by analyzing the evolution of light in femtosecond laser written waveguide arrays.
Reflection of a shock from a solid wedge is a classical problem in gas dynamics. Depending on the parameters either a regular or a irregular (Mach-type) reflection results. We construct regular reflection as an exact self-similar solution for potential flow. For some upstream Mach numbers MI and isentropic coefficients γ, a solution exists for all wedge angles θ allowed by the sonic criterion. ...
A new class of rainbows is created when a droplet is illuminated from the inside by a point light source. The position of the rainbow depends on both the index of refraction of the droplet and the position of the light source, and the rainbow vanishes when the point source is too close to the center of the droplet. Here we experimentally measure the position of the transmission and one-internal...
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