Introduction Experiment 9 introduced us to the concept of thin lenses. We were asked to determine the focal lengths of two converging lenses and one diverging lens. The following equations were used to calculate the focal lengths: 1/p + 1/q = 1/f where p is equal to the distance of the object from the lens and q is equal to the image length from the lens‚ and f is the focal point and 1/converging F+ 1/diverging F = 1/combined. The focal point is positive for converging lenses and negative for diverging lenses
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a word or phrase in the blank to make the statement true. __F__ 1) The microscope lens may be cleaned with any soft tissue. USE ONLY LENS PAPER. REGULAR TISSUES CAN SCRATCH THE LENSES. __F__ 2) The coarse adjustment knob maybe used in focusing with all objective lenses. COARSE ADJUSTMENT IS ONLY USED ON SCANNING POWER. __T__ 3) When beginning to focus‚ the lowest power lens should be used. __T__ 4) Resolution decreases as the amount of light coming in on
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Why is the lens flexible? The lens within our eyes is flexible so that it can adjust according to the environment you are in‚ so that you can see clearer and focus on an object closer up or farther away. It bends and shifts depending on how close or far you are from the object you are looking at. When you age‚ the lens becomes less flexible and it becomes harder to see. This is a condition that will eventually affect everybody‚ and is known as presbyopia. Name the three parts that the eye needs
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Controlled assessment research Focus length of a lens- The most important characteristic of a lens is its principal focal length‚ or its inverse which is called the lens strength or lens "power". Optometrists usually prescribe corrective lenses in terms of the lens power in diopters. The lens power is the inverse of the focal length in meters: the physical unit for lens power is 1/meter which is called diopter Convex- The word convex means curving out or bulging outward‚ as opposed to concave
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How does a Lens Refract Light? Different Lenses refract light in different ways. First‚ we will look at a double convex lens. Several light rays will approach the convex lens in a parallel manner. After they approach the lens‚ each ray will refract towards the normal. The light is passing from an optical less dense medium (Air) into a more dense medium (such as plastic or glass) at this boundary. Since the light rays are passing the boundary from a less dense medium in which light travels fast (optically
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they were unable to work a honest living or accomplish anything on their own. The Marxist lens help explain how socioeconomic factors influence the characters‚ plot‚ setting‚ or any other aspect of the novel. Marxists believe that a work of literature is not a result of divine inspiration or pure artistic endeavor‚ but that it arises out of the economic and ideological circumstances surrounding its creation. Marxist Critics view the literature as a reflection of the author’s own class or as an analysis
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Lesson Plan: Observing with a Compound Lens Microscope Grade 10 Biology Objective Students will be able to bring into focus the lens on a compound light microscope and make an accurate observation of a plant cell. Standard State Science Framework: Students will be able to use the tools of scientific inquiry. Procedures Clarify Goals and Establish Set Tell students that today they are going to learn how to focus a lens on a compound light microscope and how
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Investigation into how the focal length of a lens affects the temperature at the focal point Research & Rationale: In my project I will be looking in to how different lenses with varying thicknesses and therefore focal points magnify and intensify light passing through it. To do this I will be measuring the temperature of an object behind the lens‚ at the focal point. The study and research of lenses was not part of the course this year‚ so I thought it would be more interesting to study a new
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Name: Skill Sheet 17.3 Thin Lens Formula Here you will become familiar and practice with a mathematical formula called “the thin lens formula.” This formula gives scientists a way to calculate the location and the size of an image that is produced by a lens. 1. What is the thin lens formula? When you use the thin lens formula‚ you assume that the thickness of the lens is very small compared with the distance between the lens and the object or the image. The formula applies both to convex or converging
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your camera (slowest and fastest speeds)? 3. Aperture: c. List the apertures (full stops) on your camera’s lens from the lowest number to highest number. 4. White Balance: 5. RAW file: 6. JPEG: 7. RAW versus JPEG: 8. Wide Angle Lens: 9. Telephoto Lens: d. What kind of lens is on your camera? ___________________________________ e. What is the range? 10. Depth of Field: 11
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