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Image of a bubble raft (bubble size ~1.5 mm) showing vacancies and an edge dislocation in the bottom right corner. A bubble raft is an array of bubbles. It demonstrates materials' microstructural and atomic length-scale behavior by modelling the {111} plane of a close-packed crystal. A material's observable and measurable mechanical properties ...
The Rayleigh–Plesset equation is often applied to the study of cavitation bubbles, shown here forming behind a propeller.. In fluid mechanics, the Rayleigh–Plesset equation or Besant–Rayleigh–Plesset equation is a nonlinear ordinary differential equation which governs the dynamics of a spherical bubble in an infinite body of incompressible fluid.
the resultant velocity of the bubble. The Hadamard–Rybczynski equation can be derived from the Navier–Stokes equations by considering only the buoyancy force and drag force acting on the moving bubble. The surface tension force and inertia force of the bubble are neglected. [1]
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Technological Revolutions and Financial Capital: The Dynamics of Bubbles and Golden Ages is an academic book by Carlota Perez that seeks to describe the connection between technological development and financial bubbles as seen in the emergence of long term technology trends. The model described by Carlota Perez shows repeated surges of ...
In geometry, the Weaire–Phelan structure is a three-dimensional structure representing an idealised foam of equal-sized bubbles, with two different shapes. In 1993, Denis Weaire and Robert Phelan found that this structure was a better solution of the Kelvin problem of tiling space by equal volume cells of minimum surface area than the previous best-known solution, the Kelvin structure.
They are made into a scale ranging from 1:200, 1:100, 1:50 to 1:20. The surface of the models was coloured according to the design manuscript. The information on building materials and dimension are labelled on the models. [10] The models can generally be divided into three types: the global complex, the individual buildings, and the detailed ...