Light enters the human eye via the transparent cornea, the eye's front window, which acts as a powerful convex lens. |
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This will give a negative focal length for a convex lens of air inside water. |
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A double convex lens with a focal length of 50 cm is fixed in a PVC pipe about 60 cm long. |
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We saw in the last section that a real image is formed by light moving through a convex lens. |
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In a double convex lens, such as a magnifying glass, the light will bend when it exits as well as when it enters. |
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Photograph by Allan Mills of a rectangular grid of lines on a white board, taken using a simple convex lens. |
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The bull's-eye lantern has a convex lens which concentrates the light and allows it to be thrown in the shape of a diverging cone. |
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He was the first to propose adding a convex lens to the camera obscura. |
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Introduction of a convex lens in the probe increases the amount of fluorescence signal for a given probe arrangement. |
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Output of laser was focused on the surface of graphite target using a 80 mm focal length convex lens. |
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For people who wear glasses already, a convex lens must be added to the initial prescription to create a bifocal lens. |
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Powerful images captured through a convex lens are frozen in time. |
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A convex lens is fixated on a slanted ceiling emanating a faint amount of soft white light. |
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When a convex lens of the right strength is placed in front of the hypermetropic eye, the light rays are refracted to focus on the retina. |
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In a sketch, indicate where you had estimated the focal length of a particular convex lens to be and where you found it to be after an investigation. |
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Ultra-wheels feature totally unique designs and geometries: the convex lens profile typical of these wheels makes it possible to achieve ideal airflow passage on the sides by generating minimum aerodynamic resistance. |
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For low powers, about 2 10×, a simple double convex lens is applicable. |
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But there it is, nonetheless: architecture, not the theme park simulation of it that has distorted the cityscape for so long like the convex lens on a rear-view mirror. |
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But where the Digitrend made do with simple low-cost plastic, the HM5 uses a prism in optical-grade sapphire with a convex lens face that magnifies 20 times. |
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The method is tested with a known specimen, a convex lens. |
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In its simplest form, a magnifying glass is a single convex lens which causes the light from the object being observed to refract and converge on the eye. |
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Fesnels Biprism complete set up this means optical bench type set up consisting of Fresnels biprism double convex lens, sodium light source etc. |
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