Changes

'''Diffraction'''  occurs ''&ldquo;when waves pass through small openings, around obstacles, or past sharp edges.  When an opaque object is placed between a point source of light and a screen, no sharp boundary exists on the screen between a shadowed region and an illuminated region. The illuminated region above the shadow of the object contains alternating light and dark fringes. Such a display is called a '''diffraction pattern'''.&rdquo; ''<ref>Halliday, Resnik, Walker: ''Fundamentals of Physics, 8th edition. p. 1200</ref>

'''Diffraction'''  occurs ''&ldquo;when [[waves]] pass through small openings, around obstacles, or past sharp edges.  When an opaque object is placed between a point source of [[light]] and a screen, no sharp boundary exists on the screen between a [[shadow|shadowed]] region and an illuminated region. The illuminated region above the shadow of the object contains alternating light and dark fringes. Such a display is called a '''diffraction pattern'''.&rdquo; ''<ref>Halliday, Resnik, Walker: ''Fundamentals of Physics, 8th edition. p. 1200</ref>

==References==

==References==

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[[Category:Physics]]

[[Category:Physics]]