compound light microscope
DESCRIPTION
Compound Light Microscope. Uses two lenses and has a light source Ocular lens usually magnifies 10x Can be used to view living cells Highest magnification of a compound light microscope is 2,000x. Electron Microscope. Beam of electrons produce an enlarged image of specimen - PowerPoint PPT PresentationTRANSCRIPT
![Page 1: Compound Light Microscope](https://reader035.vdocuments.mx/reader035/viewer/2022062410/568160d0550346895dd005ff/html5/thumbnails/1.jpg)
Compound Light Microscope•Uses two lenses and has a light source
•Ocular lens usually magnifies 10x
•Can be used to view living cells
•Highest magnification of a compound light microscope is 2,000x
![Page 2: Compound Light Microscope](https://reader035.vdocuments.mx/reader035/viewer/2022062410/568160d0550346895dd005ff/html5/thumbnails/2.jpg)
![Page 3: Compound Light Microscope](https://reader035.vdocuments.mx/reader035/viewer/2022062410/568160d0550346895dd005ff/html5/thumbnails/3.jpg)
Electron Microscope• Beam of electrons produce an enlarged image of specimen
•Highest magnification of an electron microscope is 200,000x
• Cannot be used to view living cells
![Page 4: Compound Light Microscope](https://reader035.vdocuments.mx/reader035/viewer/2022062410/568160d0550346895dd005ff/html5/thumbnails/4.jpg)
Scanning Electron Microscope
•Electron beam is focused on a specimen coated with a very thin layer of metal
•Electrons that bounce off form an image on a fluorescent screen
•Show 3-D images of cell surfaces
•Black and white images only (artificial colors sometimes added)
![Page 5: Compound Light Microscope](https://reader035.vdocuments.mx/reader035/viewer/2022062410/568160d0550346895dd005ff/html5/thumbnails/5.jpg)
![Page 6: Compound Light Microscope](https://reader035.vdocuments.mx/reader035/viewer/2022062410/568160d0550346895dd005ff/html5/thumbnails/6.jpg)
Transmission Electron Microscope•An electron beam is directed at a very thin slice of a specimen stained with metal ions
•Electrons passing through the specimen strike a fluorescent screen, forming an image
•The formed image can show the internal structure of a cell in fine detail
•Black and white images only (artificial colors sometimes added)
![Page 7: Compound Light Microscope](https://reader035.vdocuments.mx/reader035/viewer/2022062410/568160d0550346895dd005ff/html5/thumbnails/7.jpg)
![Page 8: Compound Light Microscope](https://reader035.vdocuments.mx/reader035/viewer/2022062410/568160d0550346895dd005ff/html5/thumbnails/8.jpg)
Stage
Light Source
Ocular Lens
Objective Lens 10x
Objective Lens 4x
Objective Lens 40x
Course Adjustment
Fine Adjustment
Stage Clips
Base
Body Tube
Arm
Nosepiece
Diaphragm/Condenser
![Page 9: Compound Light Microscope](https://reader035.vdocuments.mx/reader035/viewer/2022062410/568160d0550346895dd005ff/html5/thumbnails/9.jpg)
Answers1. Body Tube 12. Coarse
Adjustment2. Nosepiece 13. Fine
Adjustment3. Objective lens 4x 14. Base4. Objective lens 10x5. Objective lens 40x6. Stage Clips7. Diaphragm / Condenser8. Light Source9. Eyepiece10. Arm11. Stage
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Magnification
- increase of an objects apparent size.
Resolution
- power to show details correctly
Contrast - the ability to distinguish different densities of structures
Wet Mount
- a glass slide holding a specimen suspended in a drop of liquid