1) The condenser lens concentrates light and makes illumination of image more uniform. 2) The bending of light is also known as refraction. 3) Total magnification = ocular lens magnification x objective lens magnification. 4) The total magnification of an image is 1200x and the magnification of the ocular lens is 10x. What is the magnification of the objective lens? Y = objective lens 1200x = 10x X y 1200x / 10x = y y = 120x Objective lens magnification = 120x 5) The limit of resolution
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CHAPTER – 10 LIGHT-REFLECTION & REFRACTION Light is a form of energy‚ which enable us to see the object. In this chapter we will study the phenomena of reflection and refraction using the property of light i.e. straight line propagation (Light wave travel from one point to another‚ along a straight line). Reflection of Light When the light is allowed to fall on highly polished surface‚ such as mirror‚ most of the light gets reflected. normal Laws of Reflection 1. 2. The angle
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built his own within a month‚[5] and greatly improved upon the design in the following year. The purpose of a telescope is not to magnify‚ as commonly thought‚ but to collect light. The larger the telescope’s main light-collecting element‚ whether lens or mirror‚ the more light is collected. Importantly‚ it is the total amount
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power and is used for all focusing when using high power lenses. 4. Ocular lens The ocular lens‚ or eyepiece‚ magnifies the image. It contains a measuring scale called and ocular micrometer. The ocular micrometer has no units. 5. Objective lens The objective lens gathers light from the specimen‚ magnifies the image of the specimen‚ and projects the magnified image into the body tube. Since no single objective lens can fulfill all the needs of someone using the microscope‚ several objective
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all interdependent and interrelated with each other. The telescope must perform all three functions at once at once for it to work. Light gathering: Light gathering power is a measure of how much light the objective (primary mirror in a reflector‚ lens in a refractor) can collect from distant objects. Nominally‚ it is proportional to the square of the diameter of the aperture. Doubling the aperture results in gathering four times as much light. Resolving: Resolving power is a measure of the amount
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270220141122 INTRODUCTION Humans have sight and hearing limitation. Without any devices‚ our sight and hearing was limited. Objective The objective of learning about the limitation of sight and hearing: ● I have learnt that our hearing and sight has limitation. ● I have learnt that we can overcome the limitation of our sight and hearing by using or wearing technology devices. ● The technology devices have make our lives easier. Limitation Of Sight Our sense of sight has its limitations
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One hand is placed under this when carrying the microscope. 7. Eyepiece - Contains a lens that magnifies about 10X. You look through this. 8. Fine Adjustment Knob - Moves the stage or body tube for focusing with the high-power objective lens. Focuses for details. 9. Course Adjustment Knob - Moves the body tube or stage for focusing with the low-power objective lens. 10. Objective Lens - Magnifies the object from 4X to 40X. 11. Stage Clips – Hold the slide in place on the stage
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how to use a microscope and oil immersion lens while observing prepared bacterial slides and also to prepare slides for observable bacteria culture from yogart. Procedure: Exercise 1: Using the Microscope - Viewing Prepared Slides I started out by reading and reviewed the science lab safety reinforcement Agreement and the instruction to oil immersion lens. After setting up my lab station I view the six prepared slides with 10x and 40x objctives lens. In each slide the differences was magnification
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PC1222 Fundamentals of Physics II Tutorial 8 1. Refraction of Light I. When a man stands near the edge of an empty drainage ditch of depth 2.80 m‚ he can barely see the boundary between the opposite wall and bottom of the ditch as shown. The distance from his eyes to the ground is 1.85 m. (a) What is the horizontal distance d from the man to the edge of the drainage ditch? (b) After the drainage ditch is filled with water as shown‚ what is the maximum distance x the man can stand from the edge
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microscope. The term "compound" means more than one lens is used. In the compound microscope you have two lenses. The primary lens is the one closest to the object and then there is the secondary lens‚ which is furthest from the object. The secondary lens is used to magnify the image of the primary lens. The primary lens is aimed at the condenser‚ or stage‚ and this is where the object to be magnified in the form of a slide is placed. A modern compound lens can magnify the original diameter of specimens
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