AHIMA. 2014. Web. 11 May 2014. “Overview” RHIA.
A light source is then placed above the tray of water. When the water is disturbed it can be seen on a white surface positioned under the tray. The first phenomenon observed was reflection. It was found that water waves also follow the law of reflection. As straight waves strike a hard straight surface they are reflected at an angle equal to the angle of incidence.
The speed of the particles of a medium is zero where the medium has maximum displacement. For a longitudinal wave, the medium has a high pressure called a compression where particles are closer than normal. For a longitudinal wave, the medium has a low pressure called a rarefaction where particles are further apart than normal. The particles around a compression move in the same direction as the wave. The particles around a rarefaction move in the opposite direction to the wave.
To develop and understanding of how holograms work, one first needs a basic understanding of light and its wave-like properties. First, we will consider investigate the concepts of diffraction and an interference pattern. Consider, for a moment, a person threw a rock into a pond. At the point where the rock hit the water, waves would form and would move away from the source of the wave (the rock) in a spherical shape. This is what a wave looks like when the wave is being emitted from a single point.
In an ocean interior, mixing is a result of breaking internal waves. Internal waves are propagating perturbations in a stratification supporting fluid. Stratification involves a layer of less dense layer resting over a denser fluid layer. At their interface, a slow diffusion forces the interface layer to move up or down. This perturbation is balanced by a buoyant force resulting in wave like motion (St. Laurent et al.