The thunder from a close bolt of lightning will be experienced as a sharp crack, indicating the presence of a lot of high frequency sound. Another common example of diffraction is the contrast in sound from a close lightning strike and a distant one. The fact that diffraction is more pronounced with longer wavelengths implies that you can hear low frequencies around obstacles better than high frequencies, as illustrated by the example of a marching band on the street. Diffraction in such cases helps the sound to 'bend around' the obstacles. The fact that you can hear sounds around corners and around barriers involves both diffraction and reflection of sound. Important parts of our experience with sound involve diffraction. The most striking examples of diffraction are those that involve light for example, the closely spaced tracks on a CD or DVD act as a diffraction grating to form the familiar rainbow pattern seen when looking at a disc. Effects of diffraction are often seen in everyday life.Typical approach to solving diffraction problems. Typical diffraction problems: a slit, a periodic array of slits, circular aperture. Interference of two one dimensional electromagnetic waves 3. Diffraction of waves in everyday life and applications 2. The setting sun is also a good example of the diffraction of light. The effects of diffraction are often seen in everyday life. The most striking examples of diffraction are those involving light for example, the closely spaced tracks on a CD or DVD act as a diffraction grating to form the familiar rainbow pattern seen when looking at a disk.
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