Name of exp: The focal length of convex mirror Date of exp: 16/1/2015 Sub group: Ali Emad - mobeen jafer - mortadha abd al-aaly Apparatus Convex mirror and holder‚ small plane mirror and wooden clamp Convex lens and holder. two mounted pins‚ metre rule or optical bench. Method: Place a mounted pin at a distance from the convex lens greater than the focal length so that a real image of the pin is produced. Locate this image by means of the second pin. Place the convex mirror between this
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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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Relation between image & object distance of lens & its focal length: lens equation. 1/f=1/do+1/di Law of refraction: n1sin0=n2sin02. Condition for multiple slit interference maximum: dsin0=mlambda Approach to optics treats light as a ray phenomenon: geometric optics Index of refraction for an optical material is- speed in light of vacuum:speed of light in material Relation between the refractive index‚ the two surface curvatures & the focal length of lens: lensmakers equation Snells law results
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THE FOCAL LENGTH OF SPHERICAL MIRRORS Section 1: The Focal length of a concave mirror Section 2: The focal length of a convex mirror Done by: I.D: 201100635 24 Oct. 11 Section 1: To determine the focal length of a Concave Mirror by locating the centre of curvature. ------------------------------------------------- ABSTRACT: In this paper we want to discuss the focal point of a concave mirror by locating the centre of curvature. The focal point is a point in space at which light incident towards
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of a convex lens Position of the object Relative size of the image (a) Beyond 2F −infinitive large (b) At 2F −diminished (c) Between F and 2F −same size (d) At focus F −enlarged A concave lens has focal length of 15cm. At what distance should the object from the lens be placed‚ so that it forms an image 10cm from the lens? Fill in the blanks: (a) For a motor: a permanent magnet‚ then commercial motor ___________. (b) Focal length of a lens: meter‚ then for power of a lens ____________
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Focal Length of Lenses Date Lab Conducted: June 19‚ 2012 Date Due: June 25‚ 2012 Date Submitted: June 25‚ 2012 Objectives: 1. To demonstrate that converging lenses form real images while diverging lenses form virtual images. 2. To determine the equivalent focal length of two joined lenses using their individual focal lengths. 3. To measure the focal length of diverging lens by combining it with a converging lens and forming a real image. List of Apparatus:
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1 Article Critique: The Convex-Concave Rules of Arthrokinematics: Flawed or Perhaps Just Misinterpreted Article Critique: The Convex-Concave Rules of Arthrokinematics: Flawed or Perhaps Just Misinterpreted Donald Neumann‚ PT‚ PhD‚ FAPTA Journal of Orthopaedic & Sports Physical Therapy George Carnage PHT 5125 In this article‚ the author‚ Neumann (2012)‚ poses the question of whether or not the convex-concave rules are flawed or misinterpreted‚ after receiving questions as
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Convex Optimization Solutions Manual Stephen Boyd Lieven Vandenberghe January 4‚ 2006 Chapter 2 Convex sets Exercises Exercises Definition of convexity 2.1 Let C ⊆ Rn be a convex set‚ with x1 ‚ . . . ‚ xk ∈ C‚ and let θ1 ‚ . . . ‚ θk ∈ R satisfy θi ≥ 0‚ θ1 + · · · + θk = 1. Show that θ1 x1 + · · · + θk xk ∈ C. (The definition of convexity is that this holds for k = 2; you must show it for arbitrary k.) Hint. Use induction on k. Solution. This is readily shown by induction from
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usually less than 0.25mm in length and covered with minute hair-like projections called cilia. They are characterized by their cilia which are used in locomotion and during feeding. Paramecia feed on bacteria. Paramecia have 2 nuclei‚ 1 macronucleus and 1 micronucleus. Some have up to 80 micronuclei! The organism cannot survive without macronucleus and cannot reproduce without micronucleus. I used the 4x on the Parmecium caudatum to measure 11 cells they varied in length from 145.44-199.98um‚
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7.Area of Sectors and Segments.notebook Arcs‚ Sectors and Segments March 27‚ 2012 Arc - part of a circle’s circumference - measured in degrees or length units. Mar 1710:25 AM Length of an Arc = Mar 1710:28 AM Example: Determine the length of arc AB. A 80 Pull m = measure of central angle in degrees 5 cm B 0 r = radius of circle Mar 1710:30 AM Mar 1710:33 AM 1 7.Area of Sectors and Segments.notebook Sector - part of a circle formed by two radii and an arc. March 27‚ 2012
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