th Grade The History Many people experimented with making microscopes Was the microscope originally made by accident Most people were creating telescopes The first microscope was 6 feet long ID: 1044520
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1. The MicroscopeMr. Ryan6th Grade
2. The HistoryMany people experimented with making microscopesWas the microscope originally made by accident? (Most people were creating telescopes)The first microscope was 6 feet long!!!The Greeks & Romans used “lenses” to magnify objects over 1000 years ago.
3. The HistoryHans and Zacharias Janssen of Holland in the 1590’s created the “first” compound microscopeAnthony van Leeuwenhoek and Robert Hooke made improvements by working on the lensesAnthony van Leeuwenhoek1632-1723Robert Hooke 1635-1703 Hooke Microscope
4. The HistoryZacharias Jansen1588-1631 The “First” Microscope
5. How a Microscope WorksConvex Lenses arecurved glass used to make microscopes(and glasses etc.)Convex Lenses bendlight and focus it inone spot.
6. How a Microscope WorksOcular Lens(Magnifies Image)Objective Lens(Gathers Light, Magnifies And Focuses Image Inside Body Tube)Body Tube(Image Focuses)Bending Light: The objective (bottom) convex lens magnifies and focuses (bends) the image inside the body tube and the ocular convex (top) lens of a microscope magnifies it (again).
7. The Parts of a Microscope
8. Body TubeNose PieceObjectiveLensesStage ClipsDiaphragmLight SourceOcular LensArmStageCoarse Adj.Fine AdjustmentBaseSkip to Magnification Section
9. Body TubeThe body tube holds the objective lenses and the ocular lens at the proper distanceDiagram
10. Nose PieceThe Nose Piece holds the objective lenses and can be turned to increase the magnificationDiagram
11. Objective LensesThe Objective Lenses increase magnification (usually from 10x to 40x)Diagram
12. Stage ClipsThese 2 clips hold the slide/specimen in place on the stage.Diagram
13. DiaphragmThe Diaphragm controls the amount of light on the slide/specimenTurn to let more light in or tomake dimmer.Diagram
14. Light SourceProjects light upwards through the diaphragm, the specimen and the lensesSome have lights, others have mirrors where you must move the mirror to reflect lightDiagram
15. Ocular Lens/EyepieceMagnifies the specimen imageDiagram
16. ArmUsed to support the microscope when carried. Holds the body tube, nose piece and objective lensesDiagram
17. StageSupports the slide/specimen Diagram
18. Coarse Adjustment KnobMoves the stage up and down (quickly) for focusing your imageDiagram
19. Fine Adjustment KnobThis knob moves the stage SLIGHTLY to sharpen the imageDiagram
20. BaseSupports the microscopeDiagram
21. Magnification
22. MagnificationTo determine your magnification…you just multiply the ocular lens by the objective lensOcular 10x Objective 40x:10 x 40 = 400Objective Lens have their magnificationwritten on them.Ocular lenses usually magnifies by 10xSo the object is 400 times “larger”
23. Caring for a MicroscopeClean only with a soft cloth/tissueMake sure it’s on a flat surfaceDon’t bang itCarry it with 2 HANDS…one on the arm and the other on the base
24. Carry a Microscope Correctly
25. Using a MicroscopeStart on the lowest magnificationDon’t use the coarse adjustment knob on high magnification…you’ll break the slide!!!Place slide on stage and lock clipsAdjust light source (if it’s a mirror…don’t stand in front of it!)Use fine adjustment to focus
26. Referenceshttp://www.cerebromente.org.br/n17/history/neurons1_i.htmGoogle Imageshttp://science.howstuffworks.com/light-microscope1.htm
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