Leber’s Hereditary Optic Neuropathy (LHON) is a kind of genetic disorder that caused by the pathogenic variants in mtDNA (mitochondrial DNA) leading to a bilateral visual loss during young adult life‚ especially in males. Mitochondrial DNA is found in mitochondria which breakdowns carbohydrates and fatty acids to generate energy so that the body cells can use. Mitochondrial DNA is inherited maternally‚ it is because the paternal mitochondria in sperm have disappeared during the early embryogenesis
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an odd mixture of the two images. Normally‚ this does not happen because your visual system has developed many different ways to resolve ambiguity. Visual perception is essentially an ambiguity-solving process. This process is called "inverse optics." The visual system is also highly adaptive. It should be understood that both evolution and learning contribute to visual
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incident ray are on the opposite sides of the normal. These three laws can all be derived from the reflection equation. Real image – In optics‚ a real image is a representation of an object (source) in which the perceived location is actually a point of convergence of the rays of light that make up the image. Virtual image - In optics‚ a virtual image is an image in which the outgoing rays from a point on the object always diverge. It will appear to converge in or behind the optical
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PLANE AND SPHERICAL MIRRORS Velorie D. Baquiran‚ Phy13L/A3 veldbaquiran@gmail.com Abstract The main theme or idea for this study circles around optics‚ more particularly on the device such as the mirror. Since light has a dual nature‚ it can travel both like a particle and like that of a wave. As the light travels from a person’s eyes‚ images can be form as it is reflected by the mirror. Properties such as reflection‚ refraction‚ interference and diffraction is identified in this study. Mirrors
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References: 1. ‘Physics’‚ D. Giancoli 2. ‘Optics’‚ Hecht & Zajac 8-12
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8th physics light reflection refraction eyes defect and dispersion The ray of light which falls on the mirror surface is called incident ray. The point at which the incident ray strikes the mirror is called the point of incidence. The ray of light which is sent back by the mirror is called the reflected ray. The ‘normal’ is a line drawn at right angles to the mirror surface at the point of incidence. The angle between incident ray and normal is called the angle of incidence. The angle between
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Fiber Optic Connector Assembly The three fiber geometry parameters that have the greatest impact on splicing performance include the following: Cladding diameter—the outside diameter of the cladding glass region. core/clad concentricity (or core-to-cladding offset)—how well the core is centered in the cladding glass region fiber curl—the amount of curvature over a fixed length of fiber These parameters are determined and controlled during the fiber-manufacturing process. As fiber is cut and
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LIGHT- REFLECTION AND REFRACTION 01. What are the various uses of concave mirrors? 02. What are the various sign conventions for reflection by spherical mirrors? 03. A convex mirror used for rear view on an automobile has a radius of curvature of 3m. If a bus is located at 5m from this mirror‚ find the position‚ nature and size of the image. 04. What are the various factors of refraction of light? 05. (a) Define Power of a Lens. Write its SI unit. (b) Find the focal length of a lens
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Light‚ Refraction and Lenses Name: Light Refraction Read from Lesson 1 of the Refraction and Lenses chapter at The Physics Classroom: http://www.physicsclassroom.com/Class/refrn/u14l1a.html http://www.physicsclassroom.com/Class/refrn/u14l1b.html http://www.physicsclassroom.com/Class/refrn/u14l1c.html http://www.physicsclassroom.com/Class/refrn/u14l1f.html MOP Connection: 1. 2. Refraction and Lenses: sublevels 1 and 2 Write a one-word synonym for refraction. Refraction occurs when light crosses
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Refraction in Biconcave Lens Now let’s investigate the refraction of light by double concave lens. Suppose that several rays of light approach the lens; and suppose that these rays of light are travelling parallel to the principal axis. Upon reaching the front face of the lens‚ each ray of light will refract towards the normal to the surface. At this boundary‚ the light ray is passing from air into a more dense medium (usually plastic or glass). Since the light ray is passing from a medium in
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