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Microscope PowerPoint Presentation

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Description : Microscope

Tags : Microscope

Published on : Nov 27, 2022 | Views : 1293 | Downloads : 1

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Microscope It is an optical instrument used to magnify a minute or very tiny specimen.
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History of the Microscope 1590 –first compound microscope (Zaccharias and Hans Janssen) They put several lenses in a tube.
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Galileo heard of their experiments and started experimenting on his own.
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Antoine Van Leeuwenhoek -1st to see bacteria, yeast, blood cells, and many tiny animals swimming in a drop of pond water. - Father of Microscopy
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1655 – Robert Hooke used a compound microscope to observe pores in cork He called them “cells”
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PARTS OF A MICROSCOPE
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Eyepiece / Ocular Lens It is where you look through to view the object placed on the stage.
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Draw Tube Holds the eyepiece in place Draw Tube
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Body Tube It supports the eyepiece and lenses. It also maintains the proper distance between the eyepiece and the objective lenses.
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Revolving Nosepiece It holds the objective lenses and can be turned to increase the magnification.
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Objectives It is used to magnify the images of the specimen to form an enlarged image.
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Stage Is where the slide is placed.
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Stage Clips These 2 clips hold the slide/specimen in place on the stage.
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Condenser Concentrates light on the specimen Condenser
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Illuminator It is a steady light source used in place of a mirror.
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Arm It is the frame to which the base, body and stage are attached.
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Coarse Adjustment Knob Moves the stage up and down LARGER focusing of the image.
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This knob moves the stage slightly to sharpen the image for PRECISION focusing. Fine Adjustment Knob
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Base Supports the microscope and is also used for carrying the microscope.
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Using a Microscope Start on the lowest magnification Don’t use the coarse adjustment knob on high magnification … you’ll break the slide. Place slide on stage and lock clips Adjust light source/ mirror. Use fine adjustment to focus
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Caring for a Microscope Clean only with a soft cloth/tissue Make sure it’s on a flat surface Carry it with 2 HANDS…one on the arm and the other on the base