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- https://phys.libretexts.org/Courses/Joliet_Junior_College/JJC_-_PHYS_110/02%3A_Book-_Conceptual_Physics_(Crowell)/2.13%3A_Optics/2.13.05%3A_Wave_OpticsSo far this book has discussed the interaction of light waves with matter, and its practical applications to optical devices like mirrors, but we have used the ray model of light almost exclusively. H...So far this book has discussed the interaction of light waves with matter, and its practical applications to optical devices like mirrors, but we have used the ray model of light almost exclusively. Hardly ever have we explicitly made use of the fact that light is an electromagnetic wave. We were able to get away with the simple ray model because the chunks of matter we were discussing, such as lenses and mirrors, were thousands of times larger than a wavelength of light.
- https://phys.libretexts.org/Bookshelves/University_Physics/Radically_Modern_Introductory_Physics_Text_I_(Raymond)/02%3A_Waves_in_Two_and_Three_Dimensions/2.04%3A_Diffraction_Through_a_Single_SlitThe subsequent development of the beam is illustrated in figures 2.13 and 2.14, and schematically in Figure \PageIndex15:. In particular, if the slit width is comparable to the wavelength, the b...The subsequent development of the beam is illustrated in figures 2.13 and 2.14, and schematically in Figure \PageIndex15:. In particular, if the slit width is comparable to the wavelength, the beam spreads broadly as in Figure \PageIndex13:. If the slit width is large compared to the wavelength, the beam doesn’t spread as much, as Figure \PageIndex14: illustrates.
- https://phys.libretexts.org/Bookshelves/Conceptual_Physics/Conceptual_Physics_(Crowell)/13%3A_Optics/13.05%3A_Wave_OpticsSo far this book has discussed the interaction of light waves with matter, and its practical applications to optical devices like mirrors, but we have used the ray model of light almost exclusively. H...So far this book has discussed the interaction of light waves with matter, and its practical applications to optical devices like mirrors, but we have used the ray model of light almost exclusively. Hardly ever have we explicitly made use of the fact that light is an electromagnetic wave. We were able to get away with the simple ray model because the chunks of matter we were discussing, such as lenses and mirrors, were thousands of times larger than a wavelength of light.
