Eyepiece (Ocular Lens) Body Tube Revolving Nosepiece Arm Objective Lens Stage Stage Clips Coarse...

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Transcript of Eyepiece (Ocular Lens) Body Tube Revolving Nosepiece Arm Objective Lens Stage Stage Clips Coarse...

  • Eyepiece (Ocular Lens)Body TubeRevolving NosepieceArmObjective LensStageStage ClipsCoarse Adjustment KnobFine Adjustment KnobBaseDiaphragmLight Source

  • Bell Ringer #8 Compound MicroscopeBell Ringer1. In what kind of studies would scientists select a microscope to collect data? When structures to be studied are to small to see with the naked/unaided eye 2. Why must you wash your hands after every scientific activity? You may be in contact with organisms you cannot see.

  • Robert Hooke1635-1703Entered Westminster School at the age of thirteenimpressed scientists with his skills at designing experiments and building equipment Devised the compound microscopeWrote Micrographia Known as the Father of Microscopythe originator of the word cell in biology

  • Compound MicroscopeWhat type of objects you would view under a compound microscope?Fabric weaveGoldfish scalesEpithelia cellsBacteria, Algae, ProtozoaStrands of hairSections of major organsSections of leaves, seeds, roots, flowersInsects

  • Vocabulary WordsCompound light microscopemicroscope that allows light to pass through a specimen and uses two lenses to form an imageMicroscopeDevice that produces magnified images of structures that are too small to see with the unaided eyeElectron MicroscopeMicroscope that forms an image by focusing beams of electrons onto a specimenMetric SystemDecimal system of measurement based on certain physical standards and scaled on multiples of 10

  • Microscope parts and functionsArmSupports the body tube and stageBaseProvides a firm and steady supportBody TubeHolds the eyepiece lens and objective lens at the correct distance for magnificationCoarse adjustmentElevates or lowers the body tube or stage a large distance with each turn of this knob

  • Microscope parts and functionsDiaphragmRegulates the amount of light passing through the stage openingEyepieceUsually contains one lens of 10 power magnificationFine adjustmentElevates or lowers the body tube or stage a small distance with each turn of this knobHigh power objectiveUsually a lens of 43 or 45 power magnification

  • Microscope parts and functionsLampProvides the light needed to view the specimenLow Power objectiveUsually a lens of 10 power magnificationMirrorDirects light through the stage opening and eyepiece to view the specimenNosepieceRevolves so that the high and low power objectives may be switched

  • Microscope parts and functionsStageWhere the microscope slide is placed for viewingStage ClipHolds the slide firmly in place on the stageStage OpeningA hole in the stage that allows light to pass through

  • Microscope parts

  • *This is the exact version of the microscope used in class. Students will be identifying the parts on the microscopes at their desks as we go along and what their functions are.