![]() We can hear around a corner because of the diffraction of sound waves. In Figure 17.2, both the ray and wave characteristics of light can be seen. When the aperture is larger than the wavelength most waves pass through and little diffraction occurs and when the aperture is much smaller than the wavelength most waves are blocked. Diffraction is a characteristic of waves of all types. Interference is the identifying behavior of a wave. Construct an argument that analyzes the production and characteristics of sounds waves. Develop and use mathematical models to explain mechanical and electromagnetic waves as a propagating disturbance that transfers energy. The size of the aperture (or object) determines the extent of diffraction, with the most significant diffraction occurring when the aperture is of the same order of magnitude as the wavelength of the wave. Obtain, evaluate, and communicate information about the properties and applications of waves. ![]() Diffractionĭiffraction is the spreading out of a wave when it passes through an aperture (gap/hole) or around an object. IMPORTANT NOTE: If a wave enters a medium at 90º to the surface (parallel to the normal) it is not refracted.
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