In this unit we learn that they are different type of wave but they are use in different type of forms. In this unit, we talked about waves. A wave can be described as a disturbance that travels through a medium from one location to another location. A pulse is a single disturbance moving through a medium from one location to another location. A medium is a substance or material which carries the wave but it does not make the wave. A wave can be described as a disturbance which travels through a medium, transporting energy from one location to another location. Transverse Wave
A transverse wave is a wave in which particles of the medium move in a direction perpendicular to the waves direction
Doppler Effect
Current Event Added Noise Keeps Waves Going According to this article, researches have now demonstrated that random fluctuations in the concentration of a chemical across a surface can enhance the propagation of waves of another chemical's activity in a thin gel. There are some observation of enhanced wave propagation represents a new avenue in the study of phenomenon called the stochastic resonanace which addition of noise can boost a week signal to detectable levels. Also, findings provide a model of how internal noise may sustain long-range chemical waves in networks of brain cells. Researchers also studied a photosensitive version of a chemical system called the Belousov-Zhabotinsky reaction which rising and falling chemical concentrations appear as visible waves traveling through a silica gel. They have stated that if you shined light on that gel, it will produce a chemicla which quenches a wave propagation. Increasing the amplitude of the random fluctuations, we can get qualitative changes in the wave behavior. They said that as the noise increases, the wave propagates farther and farther until there is sustained wave propagation. However, the noise overwhelms the system and the waves break up.
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