Landing on an Aircraft Carrier The Fresnel Lens Optical Landing System (FLOLS) used to ensure safe …
Landing on an Aircraft Carrier The Fresnel Lens Optical Landing System (FLOLS) used to ensure safe landings on aircraft carriers consists of a series of Fresnel lenses of different colors. Each lens focuses light in a different, specific direction, and hence which light a pilot sees on approach determines whether the plane is above, below, or on the proper landing path. The basic idea behind a Fresnel lens, which has the same optical properties as an ordinary lens, is shown in FIGURE 27-30 . Suppose an object is 17.1 cm behind a Fresnel lens, and that the corresponding image is a distance d_1=d in front of the lens. If the object is moved to a distance of 12.0 cm behind the lens, the image distance doubles to d_1=2 d . In the FLOLS, it is desired to have the image of the light bulb at infinity. What object distance will give this result for this particular lens?
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Видео Landing on an Aircraft Carrier The Fresnel Lens Optical Landing System (FLOLS) used to ensure safe … канала mike perez
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Видео Landing on an Aircraft Carrier The Fresnel Lens Optical Landing System (FLOLS) used to ensure safe … канала mike perez
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